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Home -> Community -> Mailing Lists -> Oracle-L -> Re:Oracle Performance Tuning steps
Dick ,
Thanks a ton for ur feedback. I ran UTLBSTAT/UTLESTAT and found out that the problem was with memory. Then I went and queried V$SGASTAT, V$SQLAREA, V$SQLTEXT. Can u tell me if there can be any other problems ? I found out later that there were some indexes added afterwards.
Thanks nyways.
Chetan
dgoulet_at_vicr.com wrote:Chetan,
First questions, What changed? Did someone add/delete an index? Was there an oversized data load done? When were the statistics, if present, last computed? Has a new program/application been added to the server? Did a memory bank go offline? Did a disk interface card go offline?
I use HP's HP-UX boxes as well, except most of my DB's are 10 times larger then yours. Just about everytime something like that happens, especially all of a sudden, one of those questions is the cause. The last item I'd go looking for, have only had one instance of it so far, is a unrestricted user who released "the query from HELL" into the database as a "one time requirement". If you can find him/her I've a used gallows rope is still here, one usage only.
Dick Goulet
____________________Reply Separator____________________Author: Chetan
Hi guys ,
Need some help. Actually we are looking here at a Oracle 8.1.7 db on HP-UNIX. The application was running fine uptil yesterday. Suddenly a part of the appln is running extremely slow. I can not figure what might be the problem. Wanted to track this down asap.
Here is some information about the db.
Database size - 20GB
Optimizer - CHOOSE
Disk Structure - RAID 1+0
No. of processors - 4
Block Size - 8K
Archivelog mode : ARCHIVELOG
Please tell me what should be the ideal way I should try to trace the problem. I thought of running UTLBSTAT/UTLESTAT or STATSPACK and asked the user to run that part of the appln. Has anybody worked with STATSPACK before ?
Can anybody tell me what should accurate and fastest way to hunt down the problem ? I think its something to do with indexes or changes in the queries.
Also can someone tell me the ideal backup strategy for this database considering the fact that it's a 24x7 system.
Thanks in advance .
Chetan Chindarkar
Hi guys ,
Need some help. Actually we are looking here at a Oracle 8.1.7 db on HP-UNIX. The application was running fine uptil yesterday. Suddenly a part of the appln is running extremely slow. I can not figure what might be the problem. Wanted to track this down asap.
Here is some information about the db.
Database size - 20GB
Optimizer - CHOOSE
Disk Structure - RAID 1+0
No. of processors - 4
Block Size - 8K
Archivelog mode : ARCHIVELOG
Please tell me what should be the ideal way I should try to trace the problem. I thought of running UTLBSTAT/UTLESTAT or STATSPACK and asked the user to run that part of the appln. Has anybody worked with STATSPACK before ?
Can anybody tell me what should accurate and fastest way to hunt down the problem ? I think its something to do with indexes or changes in the queries.
Also can someone tell me the ideal backup strategy for this database considering the fact that it's a 24x7 system.
Thanks in advance .
Chetan Chindarkar
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