|
-
BLOCKS tells you how many blocks are allocated for the specific table.
EMPTY_BLOCKS tells you how many full-blocks you have empty.
Please note neither one of these columns is telling you how much free space you have on the used blocks.
NUM_ROWS * AVG_ROW_LEN tells you how much space your raw data is using but you may want to take into consideration PCT_USED/PCT_FREE values to get a more realistic figure.
Last but not least, for partitioned tables you may want to query DBA_TAB_PARTITIONS instead of DBA_TABLES.
Last edited by PAVB; 05-27-2008 at 06:23 AM.
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
|
Click Here to Expand Forum to Full Width
|
Reply With Quote