Partitioned Indexes Created With 8M Initial Extent (Doc ID 1989311.1)

Last updated on DECEMBER 18, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

Segments of type INDEX PARTITION or INDEX SUBPARTITION will be created with 8M initial extent in version 12.1.0.2, instead of 64K in earlier versions. Global indexes or indexes on non partitioned tables still have 64K.

If you create the index before the insert statement, the segment size is only 64K.

Issue can be easily reproduced on 12.1.0.2.0.

==64K are allocated in the situation the index is created when no rows are in the table:

  

Changes

Upgrade to version 12.

Cause

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