Shrinking the tempdb database
There are two ways to shrink the tempdb database on your Amazon RDS DB instance. You
can use the rds_shrink_tempdbfile procedure, or you can set the
SIZE property,
Using the rds_shrink_tempdbfile procedure
You can use the Amazon RDS procedure msdb.dbo.rds_shrink_tempdbfile to shrink the
tempdb database. You can only call
rds_shrink_tempdbfile if you have CONTROL access to
tempdb. When you call rds_shrink_tempdbfile, there is
no downtime for your DB instance.
The rds_shrink_tempdbfile procedure has the following parameters.
| Parameter name | Data type | Default | Required | Description |
|---|---|---|---|---|
|
SYSNAME |
— |
required |
The logical name of the file to shrink. |
|
int |
null |
optional |
The new size for the file, in megabytes. |
The following example gets the names of the files for the tempdb
database.
use tempdb; GO select name, * from sys.sysfiles; GO
The following example shrinks a tempdb database file named
test_file, and requests a new size of 10 megabytes:
exec msdb.dbo.rds_shrink_tempdbfile @temp_filename = N'test_file', @target_size =10;
Setting the SIZE property
You can also shrink the tempdb database by setting the SIZE
property and then restarting your DB instance. For more information about restarting
your DB instance, see Rebooting a DB instance.
The following example demonstrates setting the SIZE property to 1024
MB.
alter database [tempdb] modify file (NAME = N'templog', SIZE =1024MB)
