Oracle table space performance
We are using oracle 9i we have a series of 2000 update statements to update all the tables in this database. The current table space in the database is 300 mb , while database size is 26 GB. Our DBA says table space will not affect performance doing update statements. Is this true , if not is there any documentation that proves this?
Note : We are doing this is test database with temp table space of 300mb while production has 23 GB table space.
We already know what statements are problematic.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
sventhan
How you doing these updates? Do you have commits in between? I would concentrate on no of rows being updated then worrying about the tablespace issues. Even if you have autoextend is set, the datafile can only grow up to certain limit which based on your block size. Given the size of the DB it wouldn't be an issue.
ASKER
I've requested that this question be deleted for the following reason:
Answer was not what I was looking for
Answer was not what I was looking for
>>Answer was not what I was looking for
I'm afraid I'll have to object for the reason you provided. What were you looking for? You asked if space would affect performance and I believe we basically said: no.
You never came back asking for additional information so we had to assume we answered the question.
I'm afraid I'll have to object for the reason you provided. What were you looking for? You asked if space would affect performance and I believe we basically said: no.
You never came back asking for additional information so we had to assume we answered the question.
split
http:#35172037 -- answers the main question where performance is impacted when new space allocated
http:#35172151 -- extends this to dictionary managed where deallocations and new allocations will be slower than LMT, Since 9i, it's a reasonable possibility it's still DMT. Also suggests pre-allocation to avoid runtime performance impact due to allocations
http:#35172037 -- answers the main question where performance is impacted when new space allocated
http:#35172151 -- extends this to dictionary managed where deallocations and new allocations will be slower than LMT, Since 9i, it's a reasonable possibility it's still DMT. Also suggests pre-allocation to avoid runtime performance impact due to allocations