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  • SQL Server Wait Statistics Report: dm_os_wait_stats

    calendar Feb 27, 2026 / Apr 12, 2026 · 6 min read · sql server wait statistics performance dm os wait stats wait types bottleneck analysis dba scripts performance tuning sys.dm_os_wait_stats sys.dm_os_waiting_tasks  ·
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    Wait statistics are one of the most reliable ways to identify performance bottlenecks in SQL Server. This T-SQL script queries sys.dm_os_wait_stats, filters out background and idle wait types that do not indicate real problems, and ranks the remaining waits by their percentage of total wait time. Purpose and Overview …


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Categories

SCRIPTS 28 SQL SERVER ADMINISTRATION 6 SQL SERVER MONITORING 5 SQL SERVER PERFORMANCE 5 SQL SERVER BACKUP RECOVERY 4 SQL SERVER MAINTENANCE 4 SQL SERVER SECURITY 2 SQL SERVER STRUCTURE 2

Series

ADMIN-GUIDE 28

Tags

SQL SERVER 27 DATABASE ADMINISTRATION 21 SQL SCRIPTS 17 MAINTENANCE SCRIPTS 11 SYSOBJECTS 10 PERFORMANCE 8 SYS.TABLES 7 DATABASE MAINTENANCE 6 DBA SCRIPTS 6 SYS.DATABASES 6 MONITORING 5 MSDB 5 PERFORMANCE TUNING 5 DBCC COMMANDS 4
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ACTIVE SESSIONS2 ADMINISTRATION2 AUTOMATION2 BACKUP1 BACKUP MONITORING2 BACKUP RECOVERY3 BACKUP VALIDATION1 BACKUPSET1 BLOCKING2 BOTTLENECK ANALYSIS1 CAPACITY PLANNING1 CLUSTERED INDEXES1 CURSOR PROGRAMMING1 DATABASE1 DATABASE ADMINISTRATION21 DATABASE CONNECTIONS1 DATABASE MAINTENANCE6 DATABASE MANAGEMENT3 DATABASE MONITORING2 DATABASE OBJECTS1 DATABASE OPTIMIZATION1 DATABASE SCRIPTS1 DATABASE SECURITY1 DBA SCRIPTS6 DBA TOOLS1 DBCC1 DBCC CHECKIDENT1 DBCC COMMANDS4 DBCC DBREINDEX2 DIAGNOSTICS1 DIFFERENTIAL BACKUP1 DM DB MISSING INDEX DETAILS1 DM DB MISSING INDEX GROUP STATS1 DM EXEC REQUESTS1 DM EXEC SESSIONS2 DM OS WAIT STATS1 DYNAMIC SQL2 ERROR LOG1 EXECUTION PLAN1 FRAGMENTATION2 FULL BACKUP1 GRANT STATEMENTS1 IDENTITY COLUMNS1 INDEX MAINTENANCE2 INDEX OPTIMIZATION1 INDEX REBUILDING1 INDEX TUNING1 INDEXES2 INDEXING1 INFORMATION_SCHEMA.TABLE_CONSTRAINTS1 INFORMATION_SCHEMA.TABLES1 JOB MONITORING1 KILL SPID1 MAINTENANCE SCRIPTS11 MISSING INDEXES1 MONITORING5 MSDB5 MSDB.DBO.BACKUPMEDIAFAMILY1 MSDB.DBO.BACKUPSET1 NONCLUSTERED INDEXES1 OBJECT SEARCH1 OPEN TRANSACTIONS1 OPTIMIZATION2 PERFORMANCE8 PERFORMANCE TUNING5 PERMISSIONS2 POINT IN TIME RESTORE1 PRIMARY KEYS1 QUERY OPTIMIZATION1 QUERY TUNING3 REBUILD REORGANIZE1 RECOVERY1 REPORTING3 RESTORE1 RESTORE VERIFYONLY1 ROLE MEMBERSHIPS1 SCHEMA MANAGEMENT1 SCRIPTS3 SECURITY2 SECURITY AUDIT1 SESSION MANAGEMENT1 SP_PKEYS1 SP_READERRORLOG1 SP_SPACEUSED1 SPACE MANAGEMENT1 SQL1 SQL SCRIPTS17 SQL SERVER27 SQL SERVER AGENT1 STATISTICS1 STORAGE1 STORED PROCEDURES1 SYS.ALLOCATION_UNITS1 SYS.COLUMNS1 SYS.DATABASE_PERMISSIONS1 SYS.DATABASE_PRINCIPALS1 SYS.DATABASE_ROLE_MEMBERS1 SYS.DATABASES6 SYS.DM_DB_INDEX_PHYSICAL_STATS2 SYS.DM_DB_INDEX_USAGE_STATS2 SYS.DM_DB_MISSING_INDEX_DETAILS1 SYS.DM_DB_MISSING_INDEX_GROUP_STATS1 SYS.DM_DB_MISSING_INDEX_GROUPS1 SYS.DM_EXEC_QUERY_PLAN1 SYS.DM_EXEC_QUERY_STATS1 SYS.DM_EXEC_REQUESTS2 SYS.DM_EXEC_SESSIONS2 SYS.DM_EXEC_SQL_TEXT3 SYS.DM_OS_WAIT_STATS1 SYS.DM_OS_WAITING_TASKS1 SYS.DM_TRAN_ACTIVE_TRANSACTIONS1 SYS.DM_TRAN_LOCKS1 SYS.INDEX_COLUMNS1 SYS.INDEXES2 SYS.KEY_CONSTRAINTS1 SYS.MASTER_FILES1 SYS.OBJECTS4 SYS.PARTITIONS1 SYS.SP_ENUMERRORLOGS1 SYS.SQL_MODULES1 SYS.TABLES7 SYSCOLUMNS1 SYSDATABASES1 SYSINDEXES2 SYSJOBHISTORY1 SYSJOBS1 SYSOBJECTS10 SYSTEM TABLES3 T-SQL2 TABLE ANALYSIS1 TABLE STATISTICS1 TRANSACTION LOG1 TRANSACTION LOG BACKUP1 UPDATE STATISTICS1 VIEWS1 WAIT STATISTICS1 WAIT TYPES3 XP_READERRORLOG1
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