TempDB Files space issue
- What is the purpose of tempdb in SQL server.?
Ans: Tempdb is a temporary database which contains tables data for temporary purpose SQL Server PDW system database that stores local temporary tables for user databases. Temporary tables are often used to improve query performance.
There are many reasons for uncontrolled TempDB growth events. Much like your operating system has a page file to handle memory overflows, SQL Server uses TempDB like a page file. The most common occurrence of this is when a query “spills” to TempDB
Issue:
Could not allocate space for object ‘<temporary system object: 422215107411968>’ in database ‘tempdb’ because the ‘PRIMARY’ filegroup is full. Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting auto growth on for existing files in the filegroup.
Insufficient space in tempdb to hold row versions. Need to shrink the version store to free up some space in tempdb. Transaction (id=2441927 xsn=753751 spid=85 elapsed time=14052) has been marked as victim and it will be rolled back if it accesses the version store. If the problem persists, the likely cause is improperly sized tempdb or long running transactions. Please refer to BOL on how to configure tempdb for versioning.
- How to resolve tempdb space issue while current drive has no space.
Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. Insufficient space in tempdb to hold row versions. Need to shrink the version store to free up some space in tempdb
- Relocate tempdb files
Need to run alter commands as below,
use
master
go
Alter database tempdb modify file (name = tempdev, filename = ‘New location\tempdb.mdf’)
go
Alter database tempdb modify file (name = templog, filename = ‘Newlocation\templog.ldf’)
- Once above commands executed need to restart SQL server
- Once restart done new files will create in new location/Drive
- We have to delete old tempdb files in old location.
