The log file for database tempdb is full

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Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. It forces other files in the filegroup to grow it. It applies to other databases as well. The easiest way to alleviate tempdb allocation contention is to enable trace flag and to add more tempdb data files.

The number of data files is it depends. Recommendation from Paul Randal. Then if you have less than 8 logical cores, create the same number of data files as logical cores. If you have more than 8 logical cores, create 8 data files and then add more in chunks of 4 if you still see PFS contention. Make sure all the tempdb data files are the same size too. We can reduce the file size by shrinking the files. Try to shrink the files first, if it is not shrinking, free the procedure cache and shrink again.

It is a temporary fix and it does not need a recycle of SQL service. Shrinking the tempDB is fine , but not more frequently, since, it may leads an external disk fragmentation. Ex: MB file can increased by MB. File ID 1 of database ID 2 cannot be shrunk as it is either being shrunk by another process or is empty. Sometimes the free cache will not help, when you do not have a free space in the file.

Use the following query and check the free space. Another case, I had a row versioning enabled for the database which prevent the TempDB shrinking, and disabled it temporarily and shrink it. It helped me. You can also move tempDB from drive to drive where you have free space and restart the instance.

The permanent fix is hard one, we need to get the query or tasks, which all are hitting the tempDB and need to tune those. In my case, it is an 8 TB database and when the predefined maintenance plan runs, it occupies all the tempDB space. It was a fantastic script, we can have more control than the maintenance plan.

I have skipped the non- clustered index and some historical VLT table, which is not a critical one. It reduced the tempDB space and job run time as well. I had a small contention and I did not create more data files.

And yes I did — Hybris This DBA has to point the difficulties he encounters with the given ETL to the developers or else the problem will come again. Maybe the OP should start making a question about optimizing his query if it helps — Hybris Add a comment. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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