Excessive Object Sizes When Using Parallel (Doc ID 855472.1)
Last updated on DECEMBER 06, 2016
Oracle Server - Enterprise Edition - Version: 220.127.116.11 Information in this document applies to any platform.
When a bitmap index is created on an ASSM tablespace, using an extent size specified as UNIFORM, with AUTOEXTEND enabled, the index increases to a very large size. If the index is dropped and rebuilt, the size is considerably smaller. The DBMS_SPACE.SPACE_USAGE procedure shows several unformatted blocks for the affected object. The issue doesn't seem to be limited specifically to indexes as other objects show abnormal space allocation as well.
Sign In with your My Oracle Support account
Don't have a My Oracle Support account? Click to get started
My Oracle Support provides customers with access to over a Million Knowledge Articles and hundreds of Community platforms