In MSSQL database log, there are following errors :
Date 1/05/2021 1:02:03 PM Log SQL Server (Current - 1/05/2021 1:02:03 PM) Source spid 123 Message Version store bloat detected
Date 1/05/2021 1:02:03 PM Log SQL Server (Current - 1/05/2021 1:02:03 PM ) Source spid 123 Message Error: 51000, Severity: 17, State: 1.
Check which session caused this issue:
select * from sys.sysprocesses where spid = 123;
Check tempdb space usage:
use tempdb
exec sp_spaceused @oneresultset = 1
Check all version records in the version store in each database:
select db_name(database_id), COUNT(*) from sys.dm_tran_version_store GROUP BY database_id dbname totalVersionRecords TESTDB 5535970 msdb 126687 ... .. .
Check space usage of objects in tempdb:
select db_name(database_id) as dbname, FILEGROUP_ID, FILE_ID, version_store_reserved_page_count/128/1024 AS Version_Store_Size_GB from tempdb.sys.dm_db_file_space_usage ; dbname FILEGROUP_ID FILE_ID Version_Store_Size_GB tempdb 1 1 5 tempdb 1 3 2 tempdb 1 4 5 tempdb 1 5 2 tempdb 1 6 2 tempdb 1 7 2 tempdb 1 8 2 tempdb 1 9 2 SELECT * FROM sysfiles order by groupid;
Check all active transactions that generate or potentially access row versions:
is_snapshot | int | 0 = Is not a snapshot isolation transaction. 1 = Is a snapshot isolation transaction. |
select session_id, is_snapshot, transaction_sequence_num, commit_sequence_num, elapsed_time_seconds from sys.dm_tran_active_snapshot_database_transactions order by 5 desc;