Hi Team Good afternoon We currently have a JOB that runs UIS using sampling = 30 and is failing on a table that has 293412179 rows and one CI Error - the tempdb is full for the DB maintenance a.c which is mapped to the DBA tempdb Can't allocate space for object 'temp worktable' in database 'DBA_tempdb' because 'system' segment is full/has no free extents. If you ran out of space in syslogs, dump the transaction log. Otherwise, use ALTER DATABASE to increase the size of the segment. When we run the same job using sampling = 10 it works fine. Question What are the risk associated with changing the sampling ? Will that impact the query plans for the app using that table ? -Sid
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