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Does DBCC Checkdb use TempDB?
DBCC CHECKDB can make heavy use of tempdb, so make sure you plan for resource utilization there.
Does DBCC Checkdb require TempDB space?
In short, for databases without data, you cannot use “DBCC CHECKDB… WITH ESTIMATEONLY” to estimate the space required in TempDB in order to run DBCC CHECKDB. So, for a 100 GB database, you will need 1.5 – 2 GB for TempDB in order to complete the consistency check.
How does DBCC Checkdb work?
DBCC CHECKDB, from Microsoft MSDN Library, checks logical and physical integrity of all the objects in the specified database by performing the following operations: Runs DBCC CHECKALLOC on the database – Checks consistency of disk space allocation structures for a specified database.
How long does a DBCC CheckDB take?
On the same server, CheckDB on a 10 gig database completes in about 4 minutes.
How long should DBCC Checkdb take?
Can You Run SQL Server DBCC checkdb on tempdb?
Coming up in SQL Server 2019, we’ll be able to use “in memory” technology for system tables in tempdb. While this solves pretty big contention issues, you can’t run CHECKDB against in-memory tables. The only way you could check those is if you backed up tempdb, which isn’t something you can do.
How much space is needed for DBCC checkdb?
Estimated TEMPDB space (in KB) needed for CHECKDB on database RSSQLDB = 93761605. If I am interpreting this correctly, TEMPDB is currently around 20GB and DBCC CHECKDB indicates it would like it to be more like 90GB.
How to check the size of a database in tempdb?
In many blogs or forums, you can read that the answer is to use the option: WITH ESTIMATEONLY. With this option, you can easily have the space estimation needed to check the database in tempdb.
Can you run checkdb against an in memory table?
While this solves pretty big contention issues, you can’t run CHECKDB against in-memory tables. The only way you could check those is if you backed up tempdb, which isn’t something you can do. Msg 3147, Level 16, State 3, Line 27 Backup and restore operations are not allowed on database tempdb.