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  • SQL Server Find Orphan Users Script

    calendar Apr 17, 2026 / Apr 16, 2026 · 7 min read · sql server security orphan users sys.database_principals sys.server_principals sp_change_users_login database administration sql scripts security audit login management  ·
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    Orphaned database users are a common problem after database restores, server migrations, or login deletions. A database user becomes orphaned when its SID does not match any server-level login SID. This script queries sys.database_principals and sys.server_principals to find every orphaned user in a database, and shows …


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Categories

SCRIPTS 33 SQL SERVER ADMINISTRATION 6 SQL SERVER MONITORING 6 SQL SERVER PERFORMANCE 6 SQL SERVER BACKUP RECOVERY 5 SQL SERVER MAINTENANCE 5 SQL SERVER SECURITY 3 SQL SERVER STRUCTURE 2

Series

ADMIN-GUIDE 33

Tags

SQL SERVER 32 DATABASE ADMINISTRATION 24 SQL SCRIPTS 19 MAINTENANCE SCRIPTS 12 SYSOBJECTS 10 DBA SCRIPTS 9 PERFORMANCE 9 DATABASE MAINTENANCE 7 SYS.TABLES 7 MONITORING 6 MSDB 6 SYS.DATABASES 6 DBCC COMMANDS 5 PERFORMANCE TUNING 5
All Tags
ACTIVE SESSIONS2 ADMINISTRATION2 AUTOMATION2 BACKUP1 BACKUP COMPRESSION1 BACKUP MONITORING2 BACKUP RECOVERY4 BACKUP VALIDATION1 BACKUPSET1 BLOCKING2 BOTTLENECK ANALYSIS1 CAPACITY PLANNING1 CLUSTERED INDEXES1 CONTENTION1 CPU HISTORY1 CPU UTILIZATION1 CURSOR PROGRAMMING1 DATABASE1 DATABASE ADMINISTRATION24 DATABASE CONNECTIONS1 DATABASE INTEGRITY1 DATABASE MAINTENANCE7 DATABASE MANAGEMENT3 DATABASE MONITORING2 DATABASE OBJECTS1 DATABASE OPTIMIZATION1 DATABASE SCRIPTS1 DATABASE SECURITY1 DBA SCRIPTS9 DBA TOOLS1 DBCC1 DBCC CHECKDB1 DBCC CHECKIDENT1 DBCC COMMANDS5 DBCC DBINFO1 DBCC DBREINDEX2 DIAGNOSTICS1 DIFFERENTIAL BACKUP1 DM DB MISSING INDEX DETAILS1 DM DB MISSING INDEX GROUP STATS1 DM DB SESSION SPACE USAGE1 DM EXEC REQUESTS2 DM EXEC SESSIONS3 DM EXEC SQL TEXT1 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 INTEGRITY CHECK1 JOB MONITORING1 KILL SPID1 LOGIN MANAGEMENT1 MAINTENANCE SCRIPTS12 MISSING INDEXES1 MONITORING6 MSDB6 MSDB.DBO.BACKUPMEDIAFAMILY1 MSDB.DBO.BACKUPSET1 NONCLUSTERED INDEXES1 OBJECT SEARCH1 OPEN TRANSACTIONS1 OPTIMIZATION2 ORPHAN USERS1 PERFORMANCE9 PERFORMANCE MONITORING1 PERFORMANCE TUNING5 PERMISSIONS2 POINT IN TIME RESTORE1 PRIMARY KEYS1 QUERY OPTIMIZATION1 QUERY TUNING3 REBUILD REORGANIZE1 RECOVERY1 REPORTING3 RESTORE1 RESTORE VERIFYONLY1 RING BUFFER1 ROLE MEMBERSHIPS1 SCHEMA MANAGEMENT1 SCRIPTS3 SECURITY3 SECURITY AUDIT2 SERVER MONITORING1 SESSION MANAGEMENT1 SP_CHANGE_USERS_LOGIN1 SP_CONFIGURE1 SP_PKEYS1 SP_READERRORLOG1 SP_SPACEUSED1 SPACE MANAGEMENT1 SPACE USAGE1 SQL1 SQL SCRIPTS19 SQL SERVER32 SQL SERVER AGENT1 SQL SERVER MONITORING1 SQLSERVER PROCESS UTILIZATION1 STATISTICS1 STORAGE1 STORED PROCEDURES1 SYS.ALLOCATION_UNITS1 SYS.COLUMNS1 SYS.DATABASE_PERMISSIONS1 SYS.DATABASE_PRINCIPALS2 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_RING_BUFFERS1 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.SERVER_PRINCIPALS1 SYS.SP_ENUMERRORLOGS1 SYS.SQL_MODULES1 SYS.TABLES7 SYSCOLUMNS1 SYSDATABASES1 SYSINDEXES2 SYSJOBHISTORY1 SYSJOBS1 SYSOBJECTS10 SYSTEM IDLE PROCESS1 SYSTEM TABLES3 T-SQL2 TABLE ANALYSIS1 TABLE STATISTICS1 TEMPDB1 TRANSACTION LOG1 TRANSACTION LOG BACKUP1 UPDATE STATISTICS1 VIEWS1 WAIT STATISTICS1 WAIT TYPES3 XP_READERRORLOG1
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