DBCC DBREINDEX 20 Hours and counting....HELP!!
I'm running SQL Server 2000 Enterprise Edition. HP Proliant , Quad 3.6Mhz, 8GB RAM, RAID 5, 4 146GB 15k rotational speed drives. The RAID controller died a week ago and I replaced it and everything came up without issue. I could issue a query and get results.
Since the server has been back up, an insert into a 105 million row table of 1,000 records is taking 15 minutes. It used to take 10 seconds. I have detailed process logs that track the duration and in three years it's never taken more than 20 seconds. Also, the weekly Backup Exec SQL "pre-process" never completed and I cancelled it at 35 hours. It used to take 30 minutes. Backup Exec is able to backup small (500MB) databases from the same server without issue.
I thought of corruption so I ran DBCC CHECKTABLE ('inv_detail', repair_fast) and it ran in 23 minutes and found no errors. Since a reindex had not been done in a few months I started a DBCC DBREINDEX. I wrongly assumed I would get status as it completed each index as the Book OnLine shows. It does not.
I'm 20 hours into the reindex and if I'm only through the first index I need to stop and use another approach. If I kill the process how long will the kill process take? Will I leave thousands of pages marked as allocated wrongly? How can I figure out what indecies are complete? How can I stop and keep the indecies that are complete?
I am 3 days late on monthly invoicing already. Not good.
THANKS !!
Since the server has been back up, an insert into a 105 million row table of 1,000 records is taking 15 minutes. It used to take 10 seconds. I have detailed process logs that track the duration and in three years it's never taken more than 20 seconds. Also, the weekly Backup Exec SQL "pre-process" never completed and I cancelled it at 35 hours. It used to take 30 minutes. Backup Exec is able to backup small (500MB) databases from the same server without issue.
I thought of corruption so I ran DBCC CHECKTABLE ('inv_detail', repair_fast) and it ran in 23 minutes and found no errors. Since a reindex had not been done in a few months I started a DBCC DBREINDEX. I wrongly assumed I would get status as it completed each index as the Book OnLine shows. It does not.
I'm 20 hours into the reindex and if I'm only through the first index I need to stop and use another approach. If I kill the process how long will the kill process take? Will I leave thousands of pages marked as allocated wrongly? How can I figure out what indecies are complete? How can I stop and keep the indecies that are complete?
I am 3 days late on monthly invoicing already. Not good.
THANKS !!
ASKER
I didn't do UPDATE STATS because I understood that DBREINDEX updated the stats. I thought I would be saving time. Oops.
True; actually you are right, DBREINDEX will indeed update the stats.
You must have some other issue on the box for it to be that slow. It might have something to do with disk I/O -- given the recent controller problems -- but you should check the SQL error logs for any kind of messages.
Also, run a profiler and/or performance monitor -- from a *different machine*, you don't want to add load to the already afflicted one -- and see if anything stands out: disk I/O queue, CPU usage, etc..
Just in case, although not likely at all, also make sure SQL does not a low "max memory" setting.
You must have some other issue on the box for it to be that slow. It might have something to do with disk I/O -- given the recent controller problems -- but you should check the SQL error logs for any kind of messages.
Also, run a profiler and/or performance monitor -- from a *different machine*, you don't want to add load to the already afflicted one -- and see if anything stands out: disk I/O queue, CPU usage, etc..
Just in case, although not likely at all, also make sure SQL does not a low "max memory" setting.
ASKER
Max memory is at 6GB. The disk queue length has been averaging 76 for hours. Normally it's closer to zero. CPU is at 3%.
Hmm, those numbers are all fine.
Did you check for SQL errors? Also check for hardware errors, including all database drives used for SQL.
Did you check for SQL errors? Also check for hardware errors, including all database drives used for SQL.
ASKER
No hardware errors. SQL Application messages that it grew the MDF by 5GB. Drives are fine. No errors in the HP management console either.
ASKER
37 hours and still going. Is there ANYWAY to get some status? Never in a million years would I think a reindex would take sooo long after a CHECKDB completed in 23 minutes.
ASKER
46 hours and it completed. Just started running test to see if it actually fixed the original issue. I'm starting that noe.
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Just to be sure, did you UPDATE STATISTICS on all the tables? I would always try that first after any kind of upgrade / service pack / media recovery, etc..