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Monday, March 5, 2012

Changing database status from suspect to Online



Problem: Making a suspect database to online in SQL SERVER.
Solution:
Sometimes SQL server database mark as suspect due to error in its physical files like log file. It is difficult to make database online when made as suspect database. There are several ways we can identify that a database is in suspect mode

select DATABASEPROPERTYEX ( 'database_name' , 'status')

or

SELECT * FROM sys.databases WHERE state = 4;

Or
You can also check yellow ! sign from SSMS.

You can recover suspect db using 2 ways
1-      Restore latest database backup with transactional backup if you have
2-      If there is any log error recorded in sql server error log. You can recover error to check that or by replacing log file.
3-      Use following command to change stats but this will loss uncommitted data from log file.

ALTER DATABASE  DBName  SET  EMERGENCY
GO
ALTER DATABASE  DBName  SET SINGLE_USER
GO
This command will set database in emergency condition so that single sign on user can work on it.

DBCC CheckDB (DBName , REPAIR_ALLOW_DATA_LOSS)
GO
You will receive folloiwng output.
DBCC results for 'dbNAME'.
Service Broker Msg 9675, State 1: Message Types analyzed: 14.
Service Broker Msg 9676, State 1: Service Contracts analyzed: 6.
Service Broker Msg 9667, State 1: Services analyzed: 3.
Service Broker Msg 9668, State 1: Service Queues analyzed: 3.
Service Broker Msg 9669, State 1: Conversation Endpoints analyzed: 0.
Service Broker Msg 9674, State 1: Conversation Groups analyzed: 0.
Service Broker Msg 9670, State 1: Remote Service Bindings analyzed: 0.
Service Broker Msg 9605, State 1: Conversation Priorities analyzed: 0.
DBCC results for 'sys.sysrscols'.
There are 632 rows in 7 pages for object "sys.sysrscols".
DBCC results for 'sys.sysrowsets'.
There are 91 rows in 1 pages for object "sys.sysrowsets".
DBCC results for 'sys.sysallocunits'.
There are 103 rows in 2 pages for object "sys.sysallocunits".
DBCC results for 'sys.sysfiles1'.
There are 2 rows in 1 pages for object "sys.sysfiles1".
DBCC results for 'sys.syspriorities'.
There are 0 rows in 0 pages for object "sys.syspriorities".
DBCC results for 'sys.sysfgfrag'.
There are 2 rows in 1 pages for object "sys.sysfgfrag".
DBCC results for 'sys.sysphfg'.
There are 1 rows in 1 pages for object "sys.sysphfg".
DBCC results for 'sys.sysprufiles'.
There are 2 rows in 1 pages for object "sys.sysprufiles".
DBCC results for 'sys.sysftinds'.
There are 0 rows in 0 pages for object "sys.sysftinds".
DBCC results for 'sys.sysowners'.
There are 14 rows in 1 pages for object "sys.sysowners".
DBCC results for 'sys.sysprivs'.
There are 130 rows in 1 pages for object "sys.sysprivs".
DBCC results for 'sys.sysschobjs'.
There are 53 rows in 1 pages for object "sys.sysschobjs".
DBCC results for 'sys.syscolpars'.
There are 483 rows in 8 pages for object "sys.syscolpars".
DBCC results for 'sys.sysnsobjs'.
There are 1 rows in 1 pages for object "sys.sysnsobjs".
DBCC results for 'sys.syscerts'.
There are 0 rows in 0 pages for object "sys.syscerts".
DBCC results for 'sys.sysxprops'.
There are 0 rows in 0 pages for object "sys.sysxprops".
DBCC results for 'sys.sysscalartypes'.
There are 34 rows in 1 pages for object "sys.sysscalartypes".
DBCC results for 'sys.systypedsubobjs'.
There are 0 rows in 0 pages for object "sys.systypedsubobjs".
DBCC results for 'sys.sysidxstats'.
There are 107 rows in 1 pages for object "sys.sysidxstats".
DBCC results for 'sys.sysiscols'.
There are 259 rows in 1 pages for object "sys.sysiscols".
DBCC results for 'sys.sysbinobjs'.
There are 23 rows in 1 pages for object "sys.sysbinobjs".
DBCC results for 'sys.sysaudacts'.
There are 0 rows in 0 pages for object "sys.sysaudacts".
DBCC results for 'sys.sysobjvalues'.
There are 109 rows in 14 pages for object "sys.sysobjvalues".
DBCC results for 'sys.sysclsobjs'.
There are 16 rows in 1 pages for object "sys.sysclsobjs".
DBCC results for 'sys.sysrowsetrefs'.
There are 0 rows in 0 pages for object "sys.sysrowsetrefs".
DBCC results for 'sys.sysremsvcbinds'.
There are 0 rows in 0 pages for object "sys.sysremsvcbinds".
DBCC results for 'sys.sysxmitqueue'.
There are 0 rows in 0 pages for object "sys.sysxmitqueue".
DBCC results for 'sys.sysrts'.
There are 1 rows in 1 pages for object "sys.sysrts".
DBCC results for 'sys.sysconvgroup'.
There are 0 rows in 0 pages for object "sys.sysconvgroup".
DBCC results for 'sys.sysdesend'.
There are 0 rows in 0 pages for object "sys.sysdesend".
DBCC results for 'sys.sysdercv'.
There are 0 rows in 0 pages for object "sys.sysdercv".
DBCC results for 'sys.syssingleobjrefs'.
There are 146 rows in 1 pages for object "sys.syssingleobjrefs".
DBCC results for 'sys.sysmultiobjrefs'.
There are 106 rows in 1 pages for object "sys.sysmultiobjrefs".
DBCC results for 'sys.sysguidrefs'.
There are 0 rows in 0 pages for object "sys.sysguidrefs".
DBCC results for 'sys.syscompfragments'.
There are 0 rows in 0 pages for object "sys.syscompfragments".
DBCC results for 'sys.sysftstops'.
There are 0 rows in 0 pages for object "sys.sysftstops".
DBCC results for 'sys.sysqnames'.
There are 97 rows in 1 pages for object "sys.sysqnames".
DBCC results for 'sys.sysxmlcomponent'.
There are 99 rows in 1 pages for object "sys.sysxmlcomponent".
DBCC results for 'sys.sysxmlfacet'.
There are 112 rows in 1 pages for object "sys.sysxmlfacet".
DBCC results for 'sys.sysxmlplacement'.
There are 18 rows in 1 pages for object "sys.sysxmlplacement".
DBCC results for 'sys.sysobjkeycrypts'.
There are 0 rows in 0 pages for object "sys.sysobjkeycrypts".
DBCC results for 'sys.sysasymkeys'.
There are 0 rows in 0 pages for object "sys.sysasymkeys".
DBCC results for 'sys.syssqlguides'.
There are 0 rows in 0 pages for object "sys.syssqlguides".
DBCC results for 'sys.sysbinsubobjs'.
There are 3 rows in 1 pages for object "sys.sysbinsubobjs".
DBCC results for 'sys.syssoftobjrefs'.
There are 0 rows in 0 pages for object "sys.syssoftobjrefs".
DBCC results for 'sys.queue_messages_1977058079'.
There are 0 rows in 0 pages for object "sys.queue_messages_1977058079".
DBCC results for 'sys.queue_messages_2009058193'.
There are 0 rows in 0 pages for object "sys.queue_messages_2009058193".
DBCC results for 'sys.queue_messages_2041058307'.
There are 0 rows in 0 pages for object "sys.queue_messages_2041058307".
DBCC results for 'sys.filestream_tombstone_2073058421'.
There are 0 rows in 0 pages for object "sys.filestream_tombstone_2073058421".
DBCC results for 'sys.syscommittab'.
There are 0 rows in 0 pages for object "sys.syscommittab".
CHECKDB found 0 allocation errors and 0 consistency errors in database 'dbNAME'.
DBCC execution completed. If DBCC printed error messages, contact your system administrator.



ALTER DATABASE  DBName  SET MULTI_USER
GO

This command will change single user status to multi user and your database is now online again. 

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