The docker-compose for Oracle 12c XE

Oracle Database 12.1.0.2 Express Edition

After a while got time to explore the new learning in my way. Oracle 12.1.0.2 Express edition on docker container is my goal. In this post I am going to explain you how did I achieved this with different path of using docker-compose commands to bringing up the automated XE container. The regular choice is defined in GitHub and Docker hub it was mentioned to use docker pull and docker run commands to use.

Advantages of containerizing Oracle 12c XE

• No need to download any software from OTN
• No need to install - dockerfile will take care of it
• No need to run dbca for Database cration - executed moment container boot time
• No need to start LISTENER, STARTUP database because this container choosen is AUTOMATED [OK]

Lets search for the Oracle 12c XE

docker search oracle12c

Output of docker search result

Docker Oracle 12c XE search

The docker-compose for Oracle 12c XE Database

oracle12cxe:
 image: rodrigozc/oracle12c
 ports:
  - "1521:1521"
  - "8089:8080"
  - "2222:22"

docker-compose config
networks: {}
services:
  oracle12cxe:
    image: rodrigozc/oracle12c
    network_mode: bridge
    ports:
    - 1521:1521
    - 8089:8080
    - '2222:22'
version: '2.0'
volumes: {}

docker-compose up -d
Creating oraclexe_oracle12cxe_1

Now lets check the docker-compose wit running process list

 docker-compose ps
         Name                Command       State                                  Ports
-----------------------------------------------------------------------------------------------------------------------
oraclexe_oracle12cxe_1   /entrypoint.sh    Up      0.0.0.0:1521->1521/tcp, 0.0.0.0:2222->22/tcp, 0.0.0.0:8089->8080/tcp

SSH Connection with port 2222

Using PuTTY terminal you can connect to the container that is running Oracle 12c XE database in it.

Oracle 12.2.0.1 XE docker container SSH connection

check logs what is happening in the container when it was just started...

vagrant@docking ~/oracle_xe $ docker-compose logs oracle12cxe
Attaching to oraclexe_oracle12cxe_1
oracle12cxe_1  | SSH server started. ;)
oracle12cxe_1  | ls: cannot access /u01/app/oracle/oradata: No such file or directory
oracle12cxe_1  | Database not initialized. Initializing database.
oracle12cxe_1  | Starting tnslsnr
oracle12cxe_1  | Copying database files
oracle12cxe_1  | 1% complete
oracle12cxe_1  | 3% complete
oracle12cxe_1  | 11% complete
oracle12cxe_1  | 18% complete
oracle12cxe_1  | 37% complete
oracle12cxe_1  | Creating and starting Oracle instance
oracle12cxe_1  | 40% complete
oracle12cxe_1  | 45% complete
oracle12cxe_1  | 50% complete
oracle12cxe_1  | 55% complete
oracle12cxe_1  | 56% complete
oracle12cxe_1  | 60% complete
oracle12cxe_1  | 62% complete
oracle12cxe_1  | Completing Database Creation
oracle12cxe_1  | 66% complete
oracle12cxe_1  | 70% complete
oracle12cxe_1  | 73% complete
oracle12cxe_1  | 85% complete
oracle12cxe_1  | 96% complete
oracle12cxe_1  | 100% complete
oracle12cxe_1  | Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/xe/xe.log" for further details.
oracle12cxe_1  | Configuring Apex console

Here the log file shows that installation successful. And Now lets check the Expression Edition Enterprise manager console

http://192.168.33.100:8089/em

Oracle Enterprise Manager database express 12c Login page

Please enter the the login credentials as: sys/oracle select the check box as sysdba option. Because we want to do a DBA task now create user.

After login successful you will get the SYSDBA access.

Create User on Oracle 12c EM Console

Create User account as demouser 

Tablespaces for demouser

Assign privileges RESOURCE, CONNECT to demouser

Create User SQL statement processed succesfully

In the PuTTY terminal connect with oracle/welcome1 ssh credentials.

export ORACLE_HOME=/u01/app/oracle/product/12.1.0/xe
export PATH=$ORACLE_HOME/bin:$PATH

To check Oracle Database running with process that have pmon word:

 ps -ef|grep pmon

You can check for the Oracle database configured and the Listener started with entrypoint.sh script.

lsnrctl status

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 04-SEP-2017 19:16:36

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production
Start Date                04-SEP-2017 18:33:10
Uptime                    0 days 0 hr. 43 min. 26 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Log File         /u01/app/oracle/diag/tnslsnr/38a4e2e216dd/listener/ale     rt/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=38a4e2e216dd)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=38a4e2e216dd)(PORT=8080))(Presentati     on=HTTP)(Session=RAW))
Services Summary...
Service "xe.oracle.docker" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
Service "xeXDB.oracle.docker" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully

Confirm the User creation

Using SQL*Plus you can test the connection to the demouser that created in the above section.

 sqlplus demouser/welcome1@localhost:1521/"xe.oracle.docker"

Output looks like this:

connection validation using SQL*Plus

You can also define your own SID and use that for creating RCU and move further.

Please share your feedback on this experiment how it helps you and any suggestions to improve more posts on containerization in Oracle DevOps.

References:

Git Hub link for Oracle 12c+ SSH 
Docker hub link of Rodrigozc