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How to create (attach) a database on a host machine from Docker?

Viktor PanFeb 10 2025

host: RHEL 8.10

Official docker from oracle

docker pull container-registry.oracle.com/database/enterprise:12.2.0.1    
docker pull container-registry.oracle.com/database/enterprise:19.3.0.0

I need to transfer databases from several old servers (about 7 databases). I want to physically place the databases on the host machine (/u01/...).
Please tell me how best to do this?

- expdp - impdp
- copying database files

With what parameters should the container be launched in order to:
- Import the database
- Connect the database to the copied database files

Do I need to create a separate space?

docker volume create oracle_data

I wanted to start creating a database through dbca. But the container does not have x11 installed.


[oracle@500e34ea9c2a /]$ dbca
DISPLAY not set.
Set DISPLAY environment variable, then re-run.
[oracle@500e34ea9c2a /]$ echo $DISPLAY
[oracle@500e34ea9c2a /]$ export DISPLAY=localhost:10.0
[oracle@500e34ea9c2a /]$ echo $DISPLAY
localhost:10.0
[oracle@500e34ea9c2a /]$ dbca
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11.XToolkit

I managed to connect to the DBMS using SQL DEVELOPER

Comments

MartinBach-Oracle Jan 8 2025

Hi Salomon,

please have a look at this blog post written by @ulrike-schwinn-oracle :

https://blogs.oracle.com/coretec/post/easy-sql-statement-tracking-in23c

I hope this answers your question, if not, please shout!

- Martin

Solomon Yakobson Jan 8 2025

@martinbach-oracle - No, it doesn't answer my question. Article you pointed to shows uses:

SQL> alter system set sql_history_enabled=true scope=both;

And in my post I said “Works fine when enabled on system level”. My question was about

SQL> ALTER SESSION SET SQL_HISTORY_ENABLED = TRUE;

where I showed SQL history was NOT captured even though it should be based on SQL_HISTORY_ENABLED:

Modifiable **ALTER SESSION**, ALTER SYSTEM

SY.

MartinBach-Oracle Jan 8 2025

As per the article I shared the situation is as follows at the moment

  • You must enable SQL history PDB-wide (only a DBA can do that) so there's a certain level of control over the feature
  • Your session has access to the SQL history
  • If you don't want to record anything, set sql_history_enabled to false.

I'm currently assessing if that's intended behaviour (in which case the documentation should be amended) or a feature not working as it should (in which case it needs fixing). The parameter is indeed session-modifyable, but not in the sense you expected.

We'll keep you posted.

- Martin

Solomon Yakobson Jan 8 2025

Do you mean it must be enabled on system level and not on session level and all session can do is disabe it for the session?

SY.

MartinBach-Oracle Jan 14 2025

Yes,

that's correct as of Oracle Database Free 23.6.

- Martin

Solomon Yakobson Jan 14 2025

Thanks Martin, I hope this will be added to 23AI docs soon.

SY.

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Added on Feb 10 2025
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