After Compressing A Table With More Than 255 Columns Then Its Size Is Lager
Last updated on MAY 12, 2017
Applies to:Oracle Server - Enterprise Edition - Version: 10.2.0.1 to 220.127.116.11.0 - Release: 10.2 to 11.2
Information in this document applies to any platform.
an uncompressed table. This happens even when there are duplicate values.
Reviewed the information by commands:
SQL> select sum(bytes)/(1024*1024) from dba_segments where SEGMENT_NAME='TABLE_NAME';
SQL> select EXTENT_ID,BLOCKS from dba_extents where SEGMENT_NAME like 'TABLE_NAME';
SQL> select pct_free,pct_used from dba_tables where table_name='TABLE_NAME';
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