Comments on: Edition-Based Redefinition

By: Online deployments or Oracle’s warm welcome of the 21st century, perhaps better known as Edition-Based Redefinition (EBR for short) « tns-0

Fri, 30 Sep 2011 23:13:25 +0000

[...] Christian Antognini’s EBR article [...]

By: Charlie Yi 木匠

Charlie Yi 木匠 — Thu, 04 Feb 2010 23:47:19 +0000

OK Chris,

Our deployment procedure will be:

1) roll in new version PL/SQL package and other database object changes.

2) change the DEFAULT_EDITION database property.

3) Application reconnect to database, (restart the connection pool).

Thanks,
Charlie

By: Christian Antognini

Christian Antognini — Thu, 04 Feb 2010 22:58:46 +0000

Hi Charlie

The only way to change the session edition is to execute an ALTER SESSION statement or through the SET_EDITION_DEFERRED procedure in the DBMS_SESSION package.

However, to change the default edition at the database level, it is possible to change the DEFAULT_EDITION database property. It goes without saying that such a change do not impact connected sessions.

HTH
Chris

By: Charlie Yi 木匠

Charlie Yi 木匠 — Thu, 04 Feb 2010 18:55:05 +0000

Please correct me if I’m wrong. So that means we cannot change other session’s Edition online.
We either use application to send the “ALTER SESSION SET edition = ” command to every connected session, or use database logon trigger to set Edition and reconnect (restart the application).

“AFAIK”, learned a new abbr. today. ^_^

By: Christian Antognini

Christian Antognini — Thu, 04 Feb 2010 08:27:36 +0000

Hi Charlie

AFAIK there is no specific API for this. So, you have to execute a regular ALTER SESSION statement. E.g.:

      statement = connection.createStatement();
      statement.execute("ALTER SESSION SET edition = " + edition);

HTH
Chris

By: Charlie Yi 木匠

Charlie Yi 木匠 — Wed, 03 Feb 2010 21:38:02 +0000

How to change Session Edition without downtime (without reconnect to database) ? E.g. a JDBC connection.
I couldn’t find it after a quick scan of Oracle Documentation.

By: Blogroll Report 08/01/2009 – 15/01/2010 « Coskan’s Approach to Oracle

Blogroll Report 08/01/2009 – 15/01/2010 « Coskan’s Approach to Oracle — Tue, 02 Feb 2010 19:04:04 +0000

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