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Need help with table reorganization

edited Oct 17, 2011 2:51AM in Database Administration (MOSC) 9 commentsAnswered ✓
Hello,

Recently i deleted millions of records from a table which is approx 6 gb. I would like to reorganize this table using export/import. I have few questions regarding reorganization:

1) Do i need to re-create indexes/constraints after import.

2) Is it advantageous to make the table with a single large extent?

3) What happens if i export the table with compress=y.

4) To reset the HWM, do i need to drop and recreate table?

I have analyzed the table and got following result:

NameTablespaceNumRowsBlocksEmptyBlocksAvgSpaceChainCntAvgRowLen

A_PT_BILL_DETAILULTGNP242775189387311805440125

Please advice as i am using old version of oracle i.e 8.0.6 on windows 2003 platform.

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