Archive for the ‘Ubuntu’ Category
Ubuntu DaaS VM
Completed the build of my new Ubuntu Virtual Machine (VM) with Oracle 23c installed in a Docker instance, and MySQL and PostgreSQL installed locally. The VM image also provides a LAMP stack with Apache2, PHP 8.1 with MySQLi and PDO modules. Since the original post, I’ve added a number of items to support our program courses and the Data Science degrees.
There are lots of tricks and techniques in the blog associated with creating the build. I took the background photograph of Chapel Bridge early on Sunday morning August 30, 1987 in Lucerne Switzerland (with a Canon A1 and ASA 64 slide film that subsequently digitized well).
Next step: roll it out into an AWS image for the students to use for their courses.
Related blog posts:
- Installing and configuring Apache2 and PHP 8.1 on Ubuntu 22.04
- Installing and configuring Docker on Ubuntu 22.04
- Installing and configuring MySQL 8 on Ubuntu 22.04
- Installing Oracle Database 23c Free in a Docker container with space allocation techniques
- Installing and configuring PostgreSQL on Ubuntu 22.04
- Installing and configuring pgAdmin4
- Installing and configuring Python for MySQL 8
- Installing and configuring Python for PostgreSQL driver on Ubuntu 22.04
- Installing and configuring SQL Developer on Ubuntu 22.04
- Installing the rlwrap utility to access command history in SQL*Plus (sqlplus) inside Docker container.
- How to add PostGIS to an existing PostgreSQL 14 Install on Ubuntu 22.0.4
- How to create a sandboxed user and wrap sqlplus inside the Docker version of Oracle 23c Free
- How to install, configure, and create a persistent SQLite 3 database and access it with Python.
As always, I hope the post and information helps others.
Apache2 on Ubuntu
It’s always interesting when I build new instances. Ubuntu 22.0.4 was no different but I ran into an issue with installing Apache2 and eventually loading the mysqli module.
The Apache2 error was an issue with an unsupported module or hidden prerequisite. The MySQLi required an Apache reload after installation. Contrary to some erroneous posts the mysqli driver is supported on PHP 8.1.
Apache2 installation starts first and the mysqli module reload and verification script follows. On Ubuntu, you install Apache2 if you’re unaware of the hidden pre-requisite, otherwise install the pre-requisite first and avoid the error.
This is the command to install the apache2 module:
sudo apt-get install -y apache2 |
It generated the following error message:
apache2: Syntax error on line 146 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/wsgi.load: Cannot load /usr/lib/apache2/modules/mod_wsgi.so into server: /usr/lib/apache2/modules/mod_wsgi.so: cannot open shared object file: No such file or directory Action 'start' failed. The Apache error log may have more information. |
Line 146 in the /etc/apache2/apache2.conf file contains the instruction to load modules. The error says it can’t find the mod_wsgi.so library, which was originally part of the deprecated Python 2.7 release.
IncludeOptional mods-enabled/*.load |
The first step I pursued was finding the missing library, which appeared to be in the libapache2-mod-wsgi package. However, it became clear there is no installation candidate for that module, which supported Python 3.x. A little more research led me to find the appropriate library version for Python 3, which is found in the libapache2-mod-wsgi-py3 package.
I installed the libapache2-mod-wsgi-py3 package with the following syntax:
sudo apt-get install -y libapache2-mod-wsgi-py3 |
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following NEW packages will be installed: libapache2-mod-wsgi-py3 0 upgraded, 1 newly installed, 0 to remove and 10 not upgraded. Need to get 106 kB of archives. After this operation, 304 kB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libapache2-mod-wsgi-py3 amd64 4.9.0-1ubuntu0.1 [106 kB] Fetched 106 kB in 1s (135 kB/s) Selecting previously unselected package libapache2-mod-wsgi-py3. (Reading database ... 228859 files and directories currently installed.) Preparing to unpack .../libapache2-mod-wsgi-py3_4.9.0-1ubuntu0.1_amd64.deb ... Unpacking libapache2-mod-wsgi-py3 (4.9.0-1ubuntu0.1) ... Setting up libapache2-mod-wsgi-py3 (4.9.0-1ubuntu0.1) ... apache2_invoke wsgi: already enabled |
After applying it, I was able to start Apache2. Then, typing in localhost returns the Apache2 index.htm page, like:
After creating the following file in the default directory:
<?php phpinfo(); ?> |
Typing in localhost/infophp returns the Apache2 info.php page, like:
After the basics for PHP, the next step is the mysqli module for the MySQL database. This can be done in two steps on Ubuntu.
- Install the MySQLi software with the following syntax on Ubuntu:
sudo apt-get install -y php8.1-mysql
If you forget and use the old php-mysqli, it will redirect to the new PHP 8.1 MySQL module.
- You need to reload the Apache configuration with the following syntax:
sudo systemctl reload apache2
Now, you can use the following PHP program to verify that the mysqli and pdo drivers are installed:
<html>
<header>
<title>Module Verification</title>
</header>
<body>
<?php
if (!function_exists('mysqli_init') && !extension_loaded('mysqli')) {
print 'mysqli not installed.'; }
else {
print 'mysqli installed.'; }
if (!function_exists('pdo_init') && !extension_loaded('pdo')) {
print '<p>pdo not installed.</p>'; }
else {
print '<p>pdo installed.</p>'; }
?>
</script>
</body>
</html> |
If everything is correct, it should return the following in a browser when you query it from localhost/the-file-name and the file is in the /var/www/html directory:
mysqli installed. pdo installed. |
This means you can now write PHP applications, like the following example for my students:
I also have some demonstration programs that upload PNG files. As usual, I forgot about that while building the Ubuntu installation with MySQL 8, PHP 8.1 and Apache2. Fortunately, I solved it back in the day when moving from PHP 5.7 to 7.1 and here are the equivalent steps for Ubuntu:
I installed the libapache2-mod-wsgi-py3 package with the following syntax:
sudo apt-get install -y php-gd |
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: php8.1-gd The following NEW packages will be installed: php-gd php8.1-gd 0 upgraded, 2 newly installed, 0 to remove and 13 not upgraded. Need to get 34.7 kB of archives. After this operation, 158 kB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 php8.1-gd amd64 8.1.2-1ubuntu2.14 [32.9 kB] Get:2 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 php-gd all 2:8.1+92ubuntu1 [1,828 B] Fetched 34.7 kB in 1s (39.3 kB/s) sh: 0: getcwd() failed: No such file or directory sh: 0: getcwd() failed: No such file or directory sh: 0: getcwd() failed: No such file or directory sh: 0: getcwd() failed: No such file or directory Selecting previously unselected package php8.1-gd. (Reading database ... 228928 files and directories currently installed.) Preparing to unpack .../php8.1-gd_8.1.2-1ubuntu2.14_amd64.deb ... Unpacking php8.1-gd (8.1.2-1ubuntu2.14) ... Selecting previously unselected package php-gd. Preparing to unpack .../php-gd_2%3a8.1+92ubuntu1_all.deb ... Unpacking php-gd (2:8.1+92ubuntu1) ... Setting up php8.1-gd (8.1.2-1ubuntu2.14) ... Creating config file /etc/php/8.1/mods-available/gd.ini with new version Setting up php-gd (2:8.1+92ubuntu1) ... Processing triggers for libapache2-mod-php8.1 (8.1.2-1ubuntu2.14) ... Processing triggers for php8.1-cli (8.1.2-1ubuntu2.14) ... |
Then, I restarted the Apache2 server to incorporate the php-gd library in my PHP module with this syntax:
sudo systemctl restart apache2.service |
Retesting the PHP form to upload and render a PNG image file with this code (note that the only thing you can display is the html header and converted image, as shown on lines 64 and 65):
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | <?php /* ConvertBlobToImage.php * by Michael McLaughlin * * This script queries an image from a BLOB column and * converts it to a PNG image. * * ALERT: * * The header must be inside the PHP script tag because nothing * can be rendered before the header() function call that signals * this is a PNG file. */ // Database credentials must be set manually because an include_once() function // call puts something ahead of the header, which causes a failure when rendering // an image. // Include the credential library. include_once("MySQLCredentials.inc"); // Return successful attempt to connect to the database. if (!$c = @mysqli_connect(HOSTNAME,USERNAME,PASSWORD,DATABASE)) { // Print user message. print "Sorry! The connection to the database failed. Please try again later."; // Assign the OCI error and format double and single quotes. print mysqli_error(); // Kill the resource. die(); } else { // Declare input variables. $id = (isset($_GET['id'])) ? (int) $_GET['id'] : 1023; // Initialize a statement in the scope of the connection. $stmt = mysqli_stmt_init($c); // Declare a SQL SELECT statement returning a MediumBLOB. $sql = "SELECT item_blob FROM item WHERE item_id = ?"; // Prepare statement and link it to a connection. if (mysqli_stmt_prepare($stmt,$sql)) { mysqli_stmt_bind_param($stmt,"i",$id); // Execute the PL/SQL statement. if (mysqli_stmt_execute($stmt)) { // Bind result to local variable. mysqli_stmt_bind_result($stmt, $image); // Read result. mysqli_stmt_fetch($stmt); } } // Disconnect from database. mysqli_close($c); // Print the header first. header('Content-type: image/png'); imagepng(imagecreatefromstring($image)); } ?> |
The call to the ConvertMySQLBlobToImage.php is handled in an image tag, as shown:
<img src="ConvertMySQLBlobToImage.php?id='.$id.'"> |
Rendering a web page, like:
As always, I hope this explains something worthwhile.
pgAdmin4 on Ubuntu
Installing pgAdmin4 is qualified by the pgAdmin4 (APT) web page, which relies on the curl utility. Ubuntu doesn’t install curl by default, so you need to install it before you can download and install pgAdmin4:
- Download and install curl utility
sudo apt-get install -y curl
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following NEW packages will be installed: curl 0 upgraded, 1 newly installed, 0 to remove and 5 not upgraded. Need to get 194 kB of archives. After this operation, 454 kB of additional disk space will be used. Ign:1 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 curl amd64 7.81.0-1ubuntu1.14 Err:1 http://security.ubuntu.com/ubuntu jammy-updates/main amd64 curl amd64 7.81.0-1ubuntu1.14 404 Not Found [IP: 91.189.91.38 80] E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/c/curl/curl_7.81.0-1ubuntu1.14_amd64.deb 404 Not Found [IP: 91.189.91.38 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? student@student-virtual-machine:~$ sudo apt-get update Hit:1 http://us.archive.ubuntu.com/ubuntu jammy InRelease Get:2 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease [119 kB] Get:3 http://security.ubuntu.com/ubuntu jammy-security InRelease [110 kB] Get:4 https://dl.google.com/linux/chrome/deb stable InRelease [1,825 B] Get:5 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease [109 kB] Get:6 http://security.ubuntu.com/ubuntu jammy-security/main i386 Packages [376 kB] Get:7 https://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1,081 B] Get:8 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [1,244 kB] Get:9 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages [1,016 kB] Get:10 http://security.ubuntu.com/ubuntu jammy-security/main Translation-en [195 kB] Get:11 http://security.ubuntu.com/ubuntu jammy-security/restricted amd64 Packages [1,179 kB] Get:12 http://security.ubuntu.com/ubuntu jammy-security/universe i386 Packages [577 kB] Get:13 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages [815 kB] Get:14 http://security.ubuntu.com/ubuntu jammy-security/universe Translation-en [152 kB] Get:15 http://us.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages [543 kB] Get:16 http://us.archive.ubuntu.com/ubuntu jammy-updates/main Translation-en [257 kB] Get:17 http://us.archive.ubuntu.com/ubuntu jammy-updates/restricted amd64 Packages [1,226 kB] Get:18 http://us.archive.ubuntu.com/ubuntu jammy-updates/restricted Translation-en [199 kB] Get:19 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe i386 Packages [675 kB] Get:20 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1,018 kB] Get:21 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe Translation-en [226 kB] Get:22 http://us.archive.ubuntu.com/ubuntu jammy-backports/universe amd64 Packages [27.8 kB] Get:23 http://us.archive.ubuntu.com/ubuntu jammy-backports/universe i386 Packages [16.8 kB] Fetched 10.1 MB in 26s (386 kB/s) Reading package lists... Done
- Download and install the public key for the repository (if not done previously):
sudo curl -fsS https://www.pgadmin.org/static/packages_pgadmin_org.pub | sudo gpg --dearmor -o /usr/share/keyrings/packages-pgadmin-org.gpg
It may find an existing key and require you to confirm its replacement:
File '/usr/share/keyrings/packages-pgadmin-org.gpg' exists. Overwrite? (y/N) y
- Create the repository configuration file:
sudo sh -c 'echo "deb [signed-by=/usr/share/keyrings/packages-pgadmin-org.gpg] https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/$(lsb_release -cs) pgadmin4 main" > /etc/apt/sources.list.d/pgadmin4.list && apt update'
Display detailed console log →
Hit:1 http://us.archive.ubuntu.com/ubuntu jammy InRelease Hit:2 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease Hit:3 http://security.ubuntu.com/ubuntu jammy-security InRelease Hit:4 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease Hit:5 https://dl.google.com/linux/chrome/deb stable InRelease Get:6 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4 InRelease [4,217 B] Get:7 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4/main all Packages [4,637 B] Get:8 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4/main amd64 Packages [7,693 B] Fetched 16.5 kB in 2s (7,404 B/s) Reading package lists... Done Building dependency tree... Done Reading state information... Done 21 packages can be upgraded. Run 'apt list --upgradable' to see them. student@student-virtual-machine:~$ sudo apt-get update Hit:1 http://security.ubuntu.com/ubuntu jammy-security InRelease Hit:2 http://us.archive.ubuntu.com/ubuntu jammy InRelease Hit:3 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease Hit:4 https://dl.google.com/linux/chrome/deb stable InRelease Hit:5 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease Hit:6 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4 InRelease Reading package lists... Done
- Install the pgadmin4 Desktop:
sudo apt install pgadmin4-desktop
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: pgadmin4-server The following NEW packages will be installed: pgadmin4-desktop pgadmin4-server 0 upgraded, 2 newly installed, 0 to remove and 21 not upgraded. Need to get 203 MB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] Y Get:1 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4/main amd64 pgadmin4-server amd64 8.0 [93.5 MB] Get:2 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4/main amd64 pgadmin4-desktop amd64 8.0 [110 MB] Fetched 203 MB in 49s (4,163 kB/s) Selecting previously unselected package pgadmin4-server. (Reading database ... 204519 files and directories currently installed.) Preparing to unpack .../pgadmin4-server_8.0_amd64.deb ... Unpacking pgadmin4-server (8.0) ... Selecting previously unselected package pgadmin4-desktop. Preparing to unpack .../pgadmin4-desktop_8.0_amd64.deb ... Unpacking pgadmin4-desktop (8.0) ... Setting up pgadmin4-server (8.0) ... Setting up pgadmin4-desktop (8.0) ... Processing triggers for desktop-file-utils (0.26-1ubuntu3) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for gnome-menus (3.36.0-1ubuntu3) ... Processing triggers for mailcap (3.70+nmu1ubuntu1) ...
- You can launch your pgadmin4 program file or by clicking the pgAdmin4 icon in the other applications menu:
- It takes a couple moments to launch the pgadmin4 desktop. The initial screen will look like:
- After pgadmin4 launches, you’re prompted for a master password. Enter the password and click the OK button to proceed or simply let it sit for a couple minutes to avoid entering a password.
- After entering the password or skipping its entry you arrive at the base dialog, as shown.
- Click the Add New Server link, which prompts you to register your database. Enter videodb in the Name field and click the Connection tab to the right of the General tab.
- In the Connection dialog, enter the following values:
- Host name/address: localhost
- Port: 5432
- Maintenance database: postgres
- Username: student
- Password: student
Enter a name for your database. In this example, videodb is the Server Name. Click the Save button to proceed.
- Having completed the configuration, you now see the home page.
This completes the instructions for installing, configuring, and using PostgreSQL on AlmaLinux. As always, I hope it helps those looking for instructions.
Python3 on PostgreSQL
The necessary Python 3 driver for connections to the PostgreSQL database is python3-psycopg2, as qualified by this earlier post with full test examples for Red Hat distributions. You can install it on Ubuntu with the following command:
sudo apt-get install -y python3-psycopg2 |
Display detailed console log →
python3-psycopg2 Reading package lists... Done Building dependency tree... Done Reading state information... Done Suggested packages: python-psycopg2-doc The following NEW packages will be installed: python3-psycopg2 0 upgraded, 1 newly installed, 0 to remove and 4 not upgraded. Need to get 136 kB of archives. After this operation, 483 kB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 python3-psycopg2 amd64 2.9.2-1build2 [136 kB] Fetched 136 kB in 1s (146 kB/s) Selecting previously unselected package python3-psycopg2. (Reading database ... 204321 files and directories currently installed.) Preparing to unpack .../python3-psycopg2_2.9.2-1build2_amd64.deb ... Unpacking python3-psycopg2 (2.9.2-1build2) ... Setting up python3-psycopg2 (2.9.2-1build2) ... |
As always, I hope this helps those looking for a solution. Also, remember the referenced post above provides Linux distribution neutral full solutions.
SQL Developer on Ubuntu
The following steps show how to install and configure SQL Developer on Ubuntu 22.0.4 to work with Oracle Database 23c Free in a Docker container. The first steps are installing the Java Runtime Environment and Java Development Kit, and then downloading, installing and configuring SQL Developer. These are the required steps:
- Install the Java Runtime Environment:
sudo apt install default-jre
The log file for this is:
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: ca-certificates-java default-jre-headless fonts-dejavu-extra java-common libatk-wrapper-java libatk-wrapper-java-jni openjdk-11-jre openjdk-11-jre-headless Suggested packages: fonts-ipafont-gothic fonts-ipafont-mincho fonts-wqy-microhei | fonts-wqy-zenhei The following NEW packages will be installed: ca-certificates-java default-jre default-jre-headless fonts-dejavu-extra java-common libatk-wrapper-java libatk-wrapper-java-jni openjdk-11-jre openjdk-11-jre-headless 0 upgraded, 9 newly installed, 0 to remove and 4 not upgraded. Need to get 44.9 MB of archives. After this operation, 185 MB of additional disk space will be used. Do you want to continue? [Y/n] Y Get:1 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 java-common all 0.72build2 [6,782 B] Get:2 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 openjdk-11-jre-headless amd64 11.0.21+9-0ubuntu1~22.04 [42.5 MB] Get:3 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 default-jre-headless amd64 2:1.11-72build2 [3,042 B] Get:4 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 ca-certificates-java all 20190909ubuntu1.2 [12.1 kB] Get:5 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 openjdk-11-jre amd64 11.0.21+9-0ubuntu1~22.04 [214 kB] Get:6 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 default-jre amd64 2:1.11-72build2 [896 B] Get:7 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 fonts-dejavu-extra all 2.37-2build1 [2,041 kB] Get:8 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libatk-wrapper-java all 0.38.0-5build1 [53.1 kB] Get:9 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libatk-wrapper-java-jni amd64 0.38.0-5build1 [49.0 kB] Fetched 44.9 MB in 14s (3,270 kB/s) Selecting previously unselected package java-common. (Reading database ... 203118 files and directories currently installed.) Preparing to unpack .../0-java-common_0.72build2_all.deb ... Unpacking java-common (0.72build2) ... Selecting previously unselected package openjdk-11-jre-headless:amd64. Preparing to unpack .../1-openjdk-11-jre-headless_11.0.21+9-0ubuntu1~22.04_amd64 .deb ... Unpacking openjdk-11-jre-headless:amd64 (11.0.21+9-0ubuntu1~22.04) ... Selecting previously unselected package default-jre-headless. Preparing to unpack .../2-default-jre-headless_2%3a1.11-72build2_amd64.deb ... Unpacking default-jre-headless (2:1.11-72build2) ... Selecting previously unselected package ca-certificates-java. Preparing to unpack .../3-ca-certificates-java_20190909ubuntu1.2_all.deb ... Unpacking ca-certificates-java (20190909ubuntu1.2) ... Selecting previously unselected package openjdk-11-jre:amd64. Preparing to unpack .../4-openjdk-11-jre_11.0.21+9-0ubuntu1~22.04_amd64.deb ... Unpacking openjdk-11-jre:amd64 (11.0.21+9-0ubuntu1~22.04) ... Selecting previously unselected package default-jre. Preparing to unpack .../5-default-jre_2%3a1.11-72build2_amd64.deb ... Unpacking default-jre (2:1.11-72build2) ... Selecting previously unselected package fonts-dejavu-extra. Preparing to unpack .../6-fonts-dejavu-extra_2.37-2build1_all.deb ... Unpacking fonts-dejavu-extra (2.37-2build1) ... Selecting previously unselected package libatk-wrapper-java. Preparing to unpack .../7-libatk-wrapper-java_0.38.0-5build1_all.deb ... Unpacking libatk-wrapper-java (0.38.0-5build1) ... Selecting previously unselected package libatk-wrapper-java-jni:amd64. Preparing to unpack .../8-libatk-wrapper-java-jni_0.38.0-5build1_amd64.deb ... Unpacking libatk-wrapper-java-jni:amd64 (0.38.0-5build1) ... Setting up java-common (0.72build2) ... Setting up fonts-dejavu-extra (2.37-2build1) ... Setting up libatk-wrapper-java (0.38.0-5build1) ... Setting up libatk-wrapper-java-jni:amd64 (0.38.0-5build1) ... Setting up default-jre-headless (2:1.11-72build2) ... Setting up openjdk-11-jre-headless:amd64 (11.0.21+9-0ubuntu1~22.04) ... update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/java to provid e /usr/bin/java (java) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jjs to provide /usr/bin/jjs (jjs) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/keytool to pro vide /usr/bin/keytool (keytool) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/rmid to provid e /usr/bin/rmid (rmid) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/rmiregistry to provide /usr/bin/rmiregistry (rmiregistry) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/pack200 to pro vide /usr/bin/pack200 (pack200) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/unpack200 to p rovide /usr/bin/unpack200 (unpack200) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/lib/jexec to provi de /usr/bin/jexec (jexec) in auto mode Setting up openjdk-11-jre:amd64 (11.0.21+9-0ubuntu1~22.04) ... Setting up default-jre (2:1.11-72build2) ... Setting up ca-certificates-java (20190909ubuntu1.2) ... head: cannot open '/etc/ssl/certs/java/cacerts' for reading: No such file or dir ectory Adding debian:QuoVadis_Root_CA_1_G3.pem Adding debian:GlobalSign_Root_E46.pem Adding debian:T-TeleSec_GlobalRoot_Class_3.pem Adding debian:Certum_Trusted_Network_CA.pem Adding debian:Buypass_Class_2_Root_CA.pem Adding debian:NetLock_Arany_=Class_Gold=_FÅ‘tanúsÃtvány.pem Adding debian:e-Szigno_Root_CA_2017.pem Adding debian:emSign_Root_CA_-_G1.pem Adding debian:D-TRUST_BR_Root_CA_1_2020.pem Adding debian:Hongkong_Post_Root_CA_3.pem Adding debian:GlobalSign_ECC_Root_CA_-_R4.pem Adding debian:NAVER_Global_Root_Certification_Authority.pem Adding debian:UCA_Extended_Validation_Root.pem Adding debian:AffirmTrust_Premium.pem Adding debian:Entrust_Root_Certification_Authority.pem Adding debian:DigiCert_Trusted_Root_G4.pem Adding debian:CFCA_EV_ROOT.pem Adding debian:ePKI_Root_Certification_Authority.pem Adding debian:Hellenic_Academic_and_Research_Institutions_ECC_RootCA_2015.pem Adding debian:HARICA_TLS_RSA_Root_CA_2021.pem Adding debian:GlobalSign_Root_CA_-_R6.pem Adding debian:TWCA_Global_Root_CA.pem Adding debian:Trustwave_Global_ECC_P384_Certification_Authority.pem Adding debian:ISRG_Root_X1.pem Adding debian:Starfield_Services_Root_Certificate_Authority_-_G2.pem Adding debian:QuoVadis_Root_CA_3.pem Adding debian:Security_Communication_Root_CA.pem Adding debian:DigiCert_TLS_RSA4096_Root_G5.pem Adding debian:Entrust_Root_Certification_Authority_-_EC1.pem Adding debian:Security_Communication_RootCA3.pem Adding debian:TeliaSonera_Root_CA_v1.pem Adding debian:vTrus_ECC_Root_CA.pem Adding debian:AC_RAIZ_FNMT-RCM_SERVIDORES_SEGUROS.pem Adding debian:Certum_EC-384_CA.pem Adding debian:Microsec_e-Szigno_Root_CA_2009.pem Adding debian:ssl-cert-snakeoil.pem Adding debian:USERTrust_ECC_Certification_Authority.pem Adding debian:CA_Disig_Root_R2.pem Adding debian:Certum_Trusted_Network_CA_2.pem Adding debian:ACCVRAIZ1.pem Adding debian:TunTrust_Root_CA.pem Adding debian:Buypass_Class_3_Root_CA.pem Adding debian:D-TRUST_Root_Class_3_CA_2_2009.pem Adding debian:Security_Communication_ECC_RootCA1.pem Adding debian:GTS_Root_R2.pem Adding debian:Certigna.pem Adding debian:SSL.com_EV_Root_Certification_Authority_RSA_R2.pem Adding debian:Entrust.net_Premium_2048_Secure_Server_CA.pem Adding debian:E-Tugra_Global_Root_CA_ECC_v3.pem Adding debian:Hongkong_Post_Root_CA_1.pem Adding debian:SZAFIR_ROOT_CA2.pem Adding debian:TUBITAK_Kamu_SM_SSL_Kok_Sertifikasi_-_Surum_1.pem Adding debian:Atos_TrustedRoot_2011.pem Adding debian:DigiCert_High_Assurance_EV_Root_CA.pem Adding debian:emSign_Root_CA_-_C1.pem Adding debian:Go_Daddy_Root_Certificate_Authority_-_G2.pem Adding debian:GDCA_TrustAUTH_R5_ROOT.pem Adding debian:GlobalSign_Root_CA_-_R3.pem Adding debian:DigiCert_Assured_ID_Root_G3.pem Adding debian:Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068_2.pem Adding debian:Certainly_Root_R1.pem Adding debian:vTrus_Root_CA.pem Adding debian:Certainly_Root_E1.pem Adding debian:Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.pem Adding debian:TWCA_Root_Certification_Authority.pem Adding debian:Starfield_Root_Certificate_Authority_-_G2.pem Adding debian:Amazon_Root_CA_3.pem Adding debian:GTS_Root_R1.pem Adding debian:SwissSign_Gold_CA_-_G2.pem Adding debian:Certum_Trusted_Root_CA.pem Adding debian:Hellenic_Academic_and_Research_Institutions_RootCA_2015.pem Adding debian:AffirmTrust_Networking.pem Adding debian:emSign_ECC_Root_CA_-_G3.pem Adding debian:HARICA_TLS_ECC_Root_CA_2021.pem Adding debian:certSIGN_ROOT_CA.pem Adding debian:Actalis_Authentication_Root_CA.pem Adding debian:SSL.com_Root_Certification_Authority_RSA.pem Adding debian:Certigna_Root_CA.pem Adding debian:XRamp_Global_CA_Root.pem Adding debian:Baltimore_CyberTrust_Root.pem Adding debian:Trustwave_Global_ECC_P256_Certification_Authority.pem Adding debian:QuoVadis_Root_CA_2_G3.pem Adding debian:GTS_Root_R3.pem Adding debian:COMODO_RSA_Certification_Authority.pem Adding debian:ISRG_Root_X2.pem Adding debian:SwissSign_Silver_CA_-_G2.pem Adding debian:IdenTrust_Public_Sector_Root_CA_1.pem Adding debian:Microsoft_ECC_Root_Certificate_Authority_2017.pem Adding debian:UCA_Global_G2_Root.pem Adding debian:DigiCert_Assured_ID_Root_CA.pem Adding debian:Entrust_Root_Certification_Authority_-_G2.pem Adding debian:QuoVadis_Root_CA_2.pem Adding debian:Trustwave_Global_Certification_Authority.pem Adding debian:OISTE_WISeKey_Global_Root_GB_CA.pem Adding debian:HiPKI_Root_CA_-_G1.pem Adding debian:E-Tugra_Certification_Authority.pem Adding debian:GTS_Root_R4.pem Adding debian:Amazon_Root_CA_2.pem Adding debian:Amazon_Root_CA_1.pem Adding debian:SecureTrust_CA.pem Adding debian:GlobalSign_Root_R46.pem Adding debian:IdenTrust_Commercial_Root_CA_1.pem Adding debian:DigiCert_Global_Root_G2.pem Adding debian:Comodo_AAA_Services_root.pem Adding debian:SSL.com_Root_Certification_Authority_ECC.pem Adding debian:T-TeleSec_GlobalRoot_Class_2.pem Adding debian:Starfield_Class_2_CA.pem Adding debian:DigiCert_Global_Root_CA.pem Adding debian:SecureSign_RootCA11.pem Adding debian:certSIGN_Root_CA_G2.pem Adding debian:DigiCert_TLS_ECC_P384_Root_G5.pem Adding debian:Entrust_Root_Certification_Authority_-_G4.pem Adding debian:OISTE_WISeKey_Global_Root_GC_CA.pem Adding debian:DigiCert_Global_Root_G3.pem Adding debian:Secure_Global_CA.pem Adding debian:Microsoft_RSA_Root_Certificate_Authority_2017.pem Adding debian:DigiCert_Assured_ID_Root_G2.pem Adding debian:Telia_Root_CA_v2.pem Adding debian:emSign_ECC_Root_CA_-_C3.pem Adding debian:COMODO_Certification_Authority.pem Adding debian:AffirmTrust_Premium_ECC.pem Adding debian:GLOBALTRUST_2020.pem Adding debian:E-Tugra_Global_Root_CA_RSA_v3.pem Adding debian:Amazon_Root_CA_4.pem Adding debian:COMODO_ECC_Certification_Authority.pem Adding debian:AffirmTrust_Commercial.pem Adding debian:SSL.com_EV_Root_Certification_Authority_ECC.pem Adding debian:AC_RAIZ_FNMT-RCM.pem Adding debian:Go_Daddy_Class_2_CA.pem Adding debian:QuoVadis_Root_CA_3_G3.pem Adding debian:D-TRUST_EV_Root_CA_1_2020.pem Adding debian:GlobalSign_Root_CA.pem Adding debian:GlobalSign_ECC_Root_CA_-_R5.pem Adding debian:USERTrust_RSA_Certification_Authority.pem Adding debian:D-TRUST_Root_Class_3_CA_2_EV_2009.pem Adding debian:Izenpe.com.pem Adding debian:ANF_Secure_Server_Root_CA.pem Adding debian:Security_Communication_RootCA2.pem done. Processing triggers for mailcap (3.70+nmu1ubuntu1) ... Processing triggers for fontconfig (2.13.1-4.2ubuntu5) ... Processing triggers for desktop-file-utils (0.26-1ubuntu3) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for gnome-menus (3.36.0-1ubuntu3) ... Processing triggers for man-db (2.10.2-1) ... Processing triggers for ca-certificates (20230311ubuntu0.22.04.1) ... Updating certificates in /etc/ssl/certs... 0 added, 0 removed; done. Running hooks in /etc/ca-certificates/update.d... done. done.
- Install the Java Runtime Environment:
sudo apt install -y default-idk
The log file for this is:
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: default-jdk-headless libice-dev libpthread-stubs0-dev libsm-dev libx11-dev libxau-dev libxcb1-dev libxdmcp-dev libxt-dev openjdk-11-jdk openjdk-11-jdk-headless x11proto-dev xorg-sgml-doctools xtrans-dev Suggested packages: libice-doc libsm-doc libx11-doc libxcb-doc libxt-doc openjdk-11-demo openjdk-11-source visualvm The following NEW packages will be installed: default-jdk default-jdk-headless libice-dev libpthread-stubs0-dev libsm-dev libx11-dev libxau-dev libxcb1-dev libxdmcp-dev libxt-dev openjdk-11-jdk openjdk-11-jdk-headless x11proto-dev xorg-sgml-doctools xtrans-dev 0 upgraded, 15 newly installed, 0 to remove and 4 not upgraded. Need to get 76.9 MB of archives. After this operation, 90.6 MB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 openjdk-11-jdk-headless amd64 11.0.21+9-0ubuntu1~22.04 [73.5 MB] Get:2 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 default-jdk-headless amd64 2:1.11-72build2 [942 B] Get:3 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 openjdk-11-jdk amd64 11.0.21+9-0ubuntu1~22.04 [1,327 kB] Get:4 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 default-jdk amd64 2:1.11-72build2 [908 B] Get:5 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 xorg-sgml-doctools all 1:1.11-1.1 [10.9 kB] Get:6 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 x11proto-dev all 2021.5-1 [604 kB] Get:7 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libice-dev amd64 2:1.0.10-1build2 [51.4 kB] Get:8 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libpthread-stubs0-dev amd64 0.4-1build2 [5,516 B] Get:9 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libsm-dev amd64 2:1.2.3-1build2 [18.1 kB] Get:10 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libxau-dev amd64 1:1.0.9-1build5 [9,724 B] Get:11 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libxdmcp-dev amd64 1:1.1.3-0ubuntu5 [26.5 kB] Get:12 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 xtrans-dev all 1.4.0-1 [68.9 kB] Get:13 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libxcb1-dev amd64 1.14-3ubuntu3 [86.5 kB] Get:14 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libx11-dev amd64 2:1.7.5-1ubuntu0.3 [744 kB] Get:15 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libxt-dev amd64 1:1.2.1-1 [396 kB] Fetched 76.9 MB in 6s (12.7 MB/s) Selecting previously unselected package openjdk-11-jdk-headless:amd64. (Reading database ... 203527 files and directories currently installed.) Preparing to unpack .../00-openjdk-11-jdk-headless_11.0.21+9-0ubuntu1~22.04_amd6 4.deb ... Unpacking openjdk-11-jdk-headless:amd64 (11.0.21+9-0ubuntu1~22.04) ... Selecting previously unselected package default-jdk-headless. Preparing to unpack .../01-default-jdk-headless_2%3a1.11-72build2_amd64.deb ... Unpacking default-jdk-headless (2:1.11-72build2) ... Selecting previously unselected package openjdk-11-jdk:amd64. Preparing to unpack .../02-openjdk-11-jdk_11.0.21+9-0ubuntu1~22.04_amd64.deb ... Unpacking openjdk-11-jdk:amd64 (11.0.21+9-0ubuntu1~22.04) ... Selecting previously unselected package default-jdk. Preparing to unpack .../03-default-jdk_2%3a1.11-72build2_amd64.deb ... Unpacking default-jdk (2:1.11-72build2) ... Selecting previously unselected package xorg-sgml-doctools. Preparing to unpack .../04-xorg-sgml-doctools_1%3a1.11-1.1_all.deb ... Unpacking xorg-sgml-doctools (1:1.11-1.1) ... Selecting previously unselected package x11proto-dev. Preparing to unpack .../05-x11proto-dev_2021.5-1_all.deb ... Unpacking x11proto-dev (2021.5-1) ... Selecting previously unselected package libice-dev:amd64. Preparing to unpack .../06-libice-dev_2%3a1.0.10-1build2_amd64.deb ... Unpacking libice-dev:amd64 (2:1.0.10-1build2) ... Selecting previously unselected package libpthread-stubs0-dev:amd64. Preparing to unpack .../07-libpthread-stubs0-dev_0.4-1build2_amd64.deb ... Unpacking libpthread-stubs0-dev:amd64 (0.4-1build2) ... Selecting previously unselected package libsm-dev:amd64. Preparing to unpack .../08-libsm-dev_2%3a1.2.3-1build2_amd64.deb ... Unpacking libsm-dev:amd64 (2:1.2.3-1build2) ... Selecting previously unselected package libxau-dev:amd64. Preparing to unpack .../09-libxau-dev_1%3a1.0.9-1build5_amd64.deb ... Unpacking libxau-dev:amd64 (1:1.0.9-1build5) ... Selecting previously unselected package libxdmcp-dev:amd64. Preparing to unpack .../10-libxdmcp-dev_1%3a1.1.3-0ubuntu5_amd64.deb ... Unpacking libxdmcp-dev:amd64 (1:1.1.3-0ubuntu5) ... Selecting previously unselected package xtrans-dev. Preparing to unpack .../11-xtrans-dev_1.4.0-1_all.deb ... Unpacking xtrans-dev (1.4.0-1) ... Selecting previously unselected package libxcb1-dev:amd64. Preparing to unpack .../12-libxcb1-dev_1.14-3ubuntu3_amd64.deb ... Unpacking libxcb1-dev:amd64 (1.14-3ubuntu3) ... Selecting previously unselected package libx11-dev:amd64. Preparing to unpack .../13-libx11-dev_2%3a1.7.5-1ubuntu0.3_amd64.deb ... Unpacking libx11-dev:amd64 (2:1.7.5-1ubuntu0.3) ... Selecting previously unselected package libxt-dev:amd64. Preparing to unpack .../14-libxt-dev_1%3a1.2.1-1_amd64.deb ... Unpacking libxt-dev:amd64 (1:1.2.1-1) ... Setting up openjdk-11-jdk-headless:amd64 (11.0.21+9-0ubuntu1~22.04) ... update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jar to provide /usr/bin/jar (jar) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jarsigner to p rovide /usr/bin/jarsigner (jarsigner) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/javac to provi de /usr/bin/javac (javac) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/javadoc to pro vide /usr/bin/javadoc (javadoc) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/javap to provi de /usr/bin/javap (javap) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jcmd to provid e /usr/bin/jcmd (jcmd) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jdb to provide /usr/bin/jdb (jdb) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jdeprscan to p rovide /usr/bin/jdeprscan (jdeprscan) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jdeps to provi de /usr/bin/jdeps (jdeps) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jfr to provide /usr/bin/jfr (jfr) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jimage to prov ide /usr/bin/jimage (jimage) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jinfo to provi de /usr/bin/jinfo (jinfo) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jlink to provi de /usr/bin/jlink (jlink) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jmap to provid e /usr/bin/jmap (jmap) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jmod to provid e /usr/bin/jmod (jmod) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jps to provide /usr/bin/jps (jps) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jrunscript to provide /usr/bin/jrunscript (jrunscript) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jshell to prov ide /usr/bin/jshell (jshell) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jstack to prov ide /usr/bin/jstack (jstack) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jstat to provi de /usr/bin/jstat (jstat) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jstatd to prov ide /usr/bin/jstatd (jstatd) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/rmic to provid e /usr/bin/rmic (rmic) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/serialver to p rovide /usr/bin/serialver (serialver) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jaotc to provi de /usr/bin/jaotc (jaotc) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jhsdb to provi de /usr/bin/jhsdb (jhsdb) in auto mode Setting up libpthread-stubs0-dev:amd64 (0.4-1build2) ... Setting up xtrans-dev (1.4.0-1) ... Setting up default-jdk-headless (2:1.11-72build2) ... Setting up openjdk-11-jdk:amd64 (11.0.21+9-0ubuntu1~22.04) ... update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jconsole to pr ovide /usr/bin/jconsole (jconsole) in auto mode Setting up xorg-sgml-doctools (1:1.11-1.1) ... Setting up default-jdk (2:1.11-72build2) ... Processing triggers for sgml-base (1.30) ... Setting up x11proto-dev (2021.5-1) ... Setting up libxau-dev:amd64 (1:1.0.9-1build5) ... Setting up libice-dev:amd64 (2:1.0.10-1build2) ... Setting up libsm-dev:amd64 (2:1.2.3-1build2) ... Processing triggers for man-db (2.10.2-1) ... Setting up libxdmcp-dev:amd64 (1:1.1.3-0ubuntu5) ... Setting up libxcb1-dev:amd64 (1.14-3ubuntu3) ... Setting up libx11-dev:amd64 (2:1.7.5-1ubuntu0.3) ... Setting up libxt-dev:amd64 (1:1.2.1-1) ...
- Download SQL Developer from here; and then install SQL Developer to the /opt directory on your Ubuntu local instance:
Use the following command to unzip the SQL Developer files to the /opt directory:
sudo unzip ~/Downloads/sqldeveloper-23.1.0.097.1607-no-jre.zip
- Create the following /usr/local/bin/sqldeveloper symbolic link:
sudo ln -s /opt/sqldeveloper/sqldeveloper.sh /usr/local/bin/sqldeveloper
- Edit the /opt/sqldeveloper/sqldeveloper.sh file by replacing the following line:
cd "`dirname $0`"/sqldeveloper/bin && bash sqldeveloper $*
with this version:
/opt/sqldeveloper/sqldeveloper/bin/sqldeveloper $*
- Now, you can launch SQL Developer from any location on your local Ubuntu operating system, like:
sqldeveloper
- You can now connect as the system user through SQL Developer to the Oracle Database 23c Free Docker instance with the following connection information:
- You can also create a Desktop shortcut by creating the sqldeveloper.desktop file in the /usr/share/applications directory. The SQL Developer icon is provided in the sqldeveloper base directory.
You should create the following sqldeveloper.desktop file to use a Desktop shortcut:
[Desktop Entry] Name=Oracle SQL Developer Comment=SQL Developer from Oracle GenericName=SQL Tool Exec=/usr/local/bin/sqldeveloper Icon=/opt/sqldeveloper/icon.png Type=Application StartupNotify=true Categories=Utility;Oracle;Development;SQL;
You can create a sandboxed container c##student user with the instructions from this earlier post on Oracle Database 18c, which remains the correct syntax.
As always, I hope this helps those trying to accomplish this task.
PostgreSQL User Password
Miraculous events happen on my students’ computers almost weekly. For example, one couldn’t remember their student user’s password, which I set by default. How did they change it? They don’t recall.
Assuming you have sudoer authority on a Linux operating system, you can change a PostgreSQL user’s password as follows:
- Assume the root user’s role with the following command:
sudo sh
- As the root user, assume the postgres user’s role with the following command:
su - postgres - As the postgres user, connect to the PostgreSQL database with the following command:
psql -U postgres - Assuming the user’s name is student and you want to set the password to a trivial value like student, use the following command:
ALTER USER student WITH ENCRYPTED PASSWORD 'student';
As always, I hope this helps somebody trying to sort out the syntax and workflow.
Parallels + Ubuntu
Installing Parallels on my iStudio (M2) was straightforward because I let it install Windows 11. Then, when I wanted to install Ubuntu it wasn’t quite that easy. You just need to understand that you click the Parallels’ Window menu option and Control Center option.
The Control Center option provides the following dialog.
Click the + symbol to create a new virtualization and you get the following dialog; and choose the Download Ubuntu with x86_64 emulation if you want to install a Docker image that’s not ported to ARM, like the Oracle Database 19c.
It’ll then explain in this dialog that is uses Apple’s Rosetta 2 technology, which means you should be able to install an Intel architecture Docker image with Oracle Database 23c.
As always, I hope this helps those trying to sort out how to leverage a new stack.
Install Docker Ubuntu
Contrary to the instructions, you should do the following as a sudoer user:
sudo apt install -y docker.io |
Install all dependency packages using the following command:
sudo snap install docker |
You should see the following:
docker 20.10.24 from Canonical✓ installed |
You can verify the Docker install with the following command:
sudo docker --version |
It should show something like this:
Docker version 24.0.5, build 24.0.5-0ubuntu1~22.04.1 |
You can check the pulled containers with the following command but at this point there should be no pulled containers.
sudo docker images |
At this point, a docker group already exists but you need to add your user to the docker group with the following command:
sudo usermod -aG docker $USER |
Using the Docker Commands:
- To activate the logging, utilize the -f parameter.
- To divide JSON, use Docker by default; to extract individual keys, use JQ.
- In your Container file, there are quite a few areas where commands may be specified.
- Posting to the volumes could be more effective while the picture is being built.
- Docker offers a highly efficient way to create an alias for its own built-in commands. This makes it easier to set up and handle lengthy and enormous orders. These alias values are stored in the directories /.bashrc or and /.bash_aliases.
- Docker offers further assistance to remove unused code fragments from the installation of the container.
- Docker always favors reading statements from the container file that have not changed. Therefore, time savings may be realized by arranging what is shown in the container file in a way that ensures the elements that are susceptible to change are shown towards the end of the document and those that are most likely to undergo change are shown at the top.
As always, I hope this helps.
MySQL on Ubuntu
Working with my students to create an Ubuntu virtual environment for Python development with the MySQL database. After completing the general provisioning covered in this older post, I’d recommend you create a python symbolic link before installing the MySQL-Python driver.
sudo ln -s /usr/bin/python3 /usr/bin/python |
You install the Python development driver with the following:
sudo apt-get -y install python3-mysql.connector |
Create a python_connect.py file to test your Python deployment’s ability to connect to the MySQL database:
#!/usr/bin/python # Import the library. import mysql.connector from mysql.connector import errorcode try: # Open connection. cnx = mysql.connector.connect(user='student', password='student', host='localhost', database='sakila') # Print the value. print("Database connection resolved.") # Handle exception and close connection. except mysql.connector.Error as e: if e.errno == errorcode.ER_ACCESS_DENIED_ERROR: print("Something is wrong with your user name or password") elif e.errno == errorcode.ER_BAD_DB_ERROR: print("Database does not exist") else: print(e) # Close the connection when the try block completes. else: cnx.close() |
You should change the file permissions of the python_connect.py to read-write-execute as owner, and read-execute as group and other with the following command:
chmod 755 python_connect.py |
Then, you can test your python_connect.py program from the local directory with the following command:
./python_connect.py |
You see the following output if it works:
Database connection resolved. |
As alway, I hope those looking for a code complete solutionk
Ubuntu Desktop 22.04
I finally got around to installing Ubuntu Desktop, Version 22.04, on my MacBook Pro 2014 since OS X stopped allowing upgrades on the device in 2021. While I replaced it in 2021 with a new MacBook Pro with an i9 Intel Chip. The Ubuntu documentation gave clear instructions on how to create a bootable USB drive before replacing the Mac OS software..
Unfortunately, networking was not well covered. It left me with two questions:
- How to configure Ubuntu Desktop 22.04 to the network?
You need to use an RJ45 network cable (in this case also an RJ45 to Thunderbolt adapter) and reboot the OS. It will automatically configure your DCHP connection.
- How to configure Wifi for Ubuntu Desktop 22.04?
You need to download and install a library, which is covered below.
After the Ubuntu Desktop installation, I noticed it didn’t provide any opportunity to update the software or configure the network. It also was not connected to the network. I connected the MacBook Pro to a physical Internet cable and rebooted the Ubuntu OS. It recognized the wired network. Then, I upgraded the installed libraries, which is almost always the best choice.
At this point, I noticed that the libraries to enable a WiFi connection were not installed. So, I installed the missing Wifi libraries with this command:
sudo apt-get install dbms bcmwl-kernel-source |
After you’ve installed the bcmwl-kernel-source libraries, navigate to the top right where you’ll find a small network icon. Click on the network icon and you’ll see the following dialog. Click on your designated Wifi, enter the password and you’ll have a Wifi connection.
As always, I hope this note helps those trying to solve a real world problem.
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