Full UNDO Tablespace In 10gR2 and above (Doc ID 413732.1)

Last updated on DECEMBER 06, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.
Checked for relevance on 30-Jun-2010
Checked for relevance on 31-Jan-2012


Symptoms

In a 10gR2 database with an UNDO tablespace created in NO AUTOEXTEND mode, having transactions running in the database, apparently the UNDO tablespace appears to be full.

Also many UNEXPIRED undo segments can be seen when selecting  from dba_undo_extents view, although no ORA-1555 or ORA-30036 errors are reported.

Changes

Starting with 10gR2, the max retention was introduced.

Cause

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