What do I do after shrink space

Hi,
Do I need to do anything after shrink space?
After I shrink the tables and indexes spaces, I saw the significent space saving. question is do I need to re-collect statistic after shrink? would query plans changed after shink space? if I have outlines defined to freeze query plan, should I re-generated outlines?
anything else should I consider after shrink space?
Thank you

asanga wrote:
no need to do anything for outlinesThank you !. so, this would imply that query plan won't be changed after shrink? is my understanding correct?

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Hello,
My table PRICE_T table gets deleted and inserted almost 50 million records everyday.
Now it takes too much time to perform this operation because of TABLE fragmented.
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Now it takes too much time to perform this operation because of TABLE fragmented.How do you define "fragmented"?
Why do you believe that your table is fragmented?
Why do you believe that the fragmentation is causing performance problems?
select table_name,
round((blocks*8),2)||'kb' "size1",
round((num_rows*avg_row_len/1024),2)||'kb' "size"
from DBA_tables
where table_name = 'PRICE_T'; - What is the output of this query before and after you shrink the table?
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- Is there a reason that you aren't using the DBMS_SPACE package? This query seems highly suspect.
Justin

Impact to production if I shrink space on table...

Hello experts.
I am running Oracle 11.2 and saw in OEM that I have a table that is candidate for shrinking space.
According to OEM, I can gain 5G by shrinking the table.
The table is 16G, so if I shrink the table, then it should reduce to approx. 11G, right?
This table is the primary table used by our application, so impact to production is very important.
Okay, so I'm wondering what the impact to production is on the table while I shrink the space on the table.
I am testing it now in my test environment.
First, I found I had a function based index which has to be dropped before I can shrink the table.
So I ran dbms_metadata to get the syntax to recreate the FBI, then dropped the FBI.
Next, i ran alter table owner.tablename enable row movement;
Then, I ran alter table owner.tablename shrink space cascade;
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Obviously, I am not in the production environment with hundreds of concurrent users, but my question is what kind of impact should I expect to see if I do this in production with people hitting this table? (No, this is not an IOT.)
Any ideas?
Edited by: 974632 on Feb 19, 2013 5:54 AM
NOTE: The table shrink command took: Elapsed: 00:43:17.19
Recreating the function based index took: Elapsed: 00:00:28.80

Uwe Hesse wrote:
What you observe is standard behavior.
A potential impact comes from the massive internal DELETE & INSERT during the shrink operation.
Will generate lots of redo & undo therefore.
That's is not necessarily a problem, though.
Kind regards
Uwe Hesse
"Don't believe it, test it!"
http://uhesse.com
Uwe,
Correct me if I'm wrong, but my thought on reading the OP is that he could very well see a performance degradation during the shrink operation, but I'd also expect to see some overall improvement after the operation due to a large decrease in the number of blocks that would have to be scanned during any FTS, and possibly some cascading of that effect back through any indexes on that table.

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