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How to determine the progress DBREINDEX

Posted on 2008-10-28
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Last Modified: 2010-04-21
I have executed a reindex on a large table. While I started it during and off peak time, it is nearing a peak time and it is not finished. Is there anyway for me to find out what the progress is on the process so that I can estimate when it will finish? It has been running for approximately 10 hours now.

I do know from my research that if I would cancel it now, it would have to rollback all changes and would most likely take another 10 hours. I am satisfied the best option is to push through, but would like to have an idea of how long that may be.

Would I be able to tell by the size of the database file?
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Question by:dgerler
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Expert Comment

by:chapmandew
ID: 22822338
In 2000, not really, no.  In 2005, you can use some of the dynamic management views to get an IDEA for the progress, but it can't tell you for sure.

You can't really tell by the size of the file, other than "a big one will take longer than a small one"...a lot of factors come into play, such as the activity on the server at the time.  Does that make sense?  Its really not a cut and dry operation.
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Author Comment

by:dgerler
ID: 22822419
I have another server that has sql 2005 on it. Would I be able to use the dynamic managment views to see anything via a connection from another server?
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by:chapmandew
ID: 22822451
No, the problem is that the DMVs only report info for 2005 instances...they wouldn't have info for the 2000 machine....
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Author Comment

by:dgerler
ID: 22822622
I figured something like that, but I had to ask.

The file for the table being reindexed is usually about 40 GB. I would say that probably 2/3 of that size can be attributed to the table beinig reindexed. Would you say that the file should not grow to more than 80 GB? It is current at about 69 GB.
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Author Comment

by:dgerler
ID: 22822630
I mean that 2/3 of the data in the file is in that table with 1/3 being in other tables.
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by:chapmandew
ID: 22822642
No way for me to be able to tell that....sorry.
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Author Comment

by:dgerler
ID: 22822668
I appreciate the information you have provided.

Thank You.
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chapmandew earned 2000 total points
ID: 22822693
Welcome....it would be a neat feature for them to add the progress on it....it just doesn't exist right now.  Sorry.
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Author Closing Comment

by:dgerler
ID: 31510752
Do you have a towel I can use to get the egg off my face? Man, Do I look bad right now. Still running at almost 13 hours and file is still growing.
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Author Comment

by:dgerler
ID: 22827510
The reindex ended up take 14 hour 40 mins for a table with 160 Mil rows and 5 indexes.

If I were to reindex it tonight, it should complete relative quick, right?
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by:chapmandew
ID: 22827832
I would think it would be quicker...but as to how much quicker there is really no way to say.
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