Good morning.
In a producctin system, aour DBA is in charged to collect statistics to different tables in datasatge.
The question is ?
what are those statistics used for? for performance issues or another reason?
id appreciate your help
stastics in datastage tables purpose
Moderators: chulett, rschirm, roy
As a table is updated over time (inserts/deletes/updates), the statistics on the table should be updated as well. If this is not done, the optimizer (as mentioned above) is accessing the table using outdated information and performance begins to decrease, sometimes dramatically depending on table size, activity and how long it's been since the last statistics "refresh". It is recommended to refresh statistics on a regular schedule to maintain performance goals.
Regards,
Regards,
- james wiles
All generalizations are false, including this one - Mark Twain.
All generalizations are false, including this one - Mark Twain.
I don't believe that is the "statistics" being asked about here. With the "our DBA is in charged to collect statistics to different tables in datastage" comment, I was thinking this was more about audit/trending stats that need to be collected run over run.
Hopefully the OP can come back and clarify.
Hopefully the OP can come back and clarify.
-craig
"You can never have too many knives" -- Logan Nine Fingers
"You can never have too many knives" -- Logan Nine Fingers