List Available DBCC Commands

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DBCC Commands or Database Consistency Checker commands have been with SQL Server from its early ages itself. In this article we would list the available DBCC commands listed using the DBCC Help command. Many in this list are undocumented and  are rarely used in practical scenarios. But these form the base for debugging complex problems. There are approximately 130 of  them.

DBCC activecursors [(spid)]

DBCC addextendedproc (function_name, dll_name)

DBCC addinstance (objectname, instancename)

DBCC adduserobject (name)

DBCC auditevent (eventclass, eventsubclass, success, loginname, rolename, dbusername, loginid)

DBCC autopilot (typeid, dbid, tabid, indid, pages [,flag])

DBCC balancefactor (variance_percent)

DBCC bufcount [(number_of_buffers)]

DBCC buffer ( {‘dbname‘ | dbid} [, objid [, number [, printopt={0|1|2} ][, dirty | io | kept | rlock | ioerr | hashed ]]])

DBCC bytes ( startaddress, length )

DBCC cachestats

DBCC callfulltext

DBCC checkalloc [(‘database_name‘[, NOINDEX | REPAIR])] [WITH NO_INFOMSGS[, ALL_ERRORMSGS][, ESTIMATEONLY]]

DBCC checkcatalog [(‘database_name‘)] [WITH NO_INFOMSGS]

DBCC checkconstraints [( ‘tab_name‘ | tab_id | ‘constraint_name‘ | constraint_id )] [WITH ALL_CONSTRAINTS | ALL_ERRORMSGS]

DBCC checkdb [(‘database_name‘[, NOINDEX | REPAIR])] [WITH NO_INFOMSGS[, ALL_ERRORMSGS][, PHYSICAL_ONLY][, ESTIMATEONLY][, DBCC TABLOCK]

DBCC checkdbts (dbid, newTimestamp)]

DBCC checkfilegroup [( [ {‘filegroup_name‘ | filegroup_id} ] [, NOINDEX] )] [WITH NO_INFOMSGS[, ALL_ERRORMSGS][, PHYSICAL_ONLY][, ESTIMATEONLY][, TABLOCK]]

DBCC checkident (‘table_name‘[, { NORESEED | {RESEED [, new_reseed_value] } } ] )

DBCC checkprimaryfile ( {‘FileName‘} [, opt={0|1|2|3} ])

DBCC checktable (‘table_name‘[, {NOINDEX | index_id | REPAIR}]) [WITH NO_INFOMSGS[, ALL_ERRORMSGS][, PHYSICAL_ONLY][, ESTIMATEONLY][, TABLOCK]]

DBCC cleantable (‘database_name‘|database_id, ‘table_name‘|table_id, [batch_size])

DBCC cacheprofile [( {actionid} [, bucketid])

DBCC clearspacecaches (‘database_name‘|database_id, ‘table_name‘|table_id, ‘index_name‘|index_id)

DBCC collectstats (on | off)

DBCC concurrencyviolation (reset | display | startlog | stoplog)

DBCC config

DBCC cursorstats ([spid [,‘clear‘]])

DBCC dbinfo [(‘dbname‘)]

DBCC dbrecover (dbname [, IgnoreErrors])

DBCC dbreindex (‘table_name‘ [, index_name [, fillfactor ]]) [WITH NO_INFOMSGS]

DBCC dbreindexall (db_name/db_id, type_bitmap)

DBCC dbrepair (‘dbname‘, DROPDB [, NOINIT])

DBCC dbtable [({‘dbname‘ | dbid})]

DBCC debugbreak

DBCC deleteinstance (objectname, instancename)

DBCC des [( {‘dbname‘ | dbid} [, {‘objname‘ | objid} ])]

DBCC detachdb [( ‘dbname‘ )]

DBCC dropcleanbuffers

DBCC dropextendedproc (function_name)

DBCC dropuserobject (‘object_name‘)

DBCC dumptrigger ({‘BREAK‘, {0 | 1}} | ‘DISPLAY‘ | {‘SET‘, exception_number} | {‘CLEAR‘, exception_number})

DBCC errorlog

DBCC extentinfo [({‘database_name‘| dbid | 0} [, {‘table_name‘ | table_id} [, {‘index_name‘ | index_id | -1}]])]

DBCC fileheader [( {‘dbname‘ | dbid} [, fileid])

DBCC fixallocation [({‘ADD‘ | ‘REMOVE‘}, {‘PAGE‘ | ‘SINGLEPAGE‘ | ‘EXTENT‘ | ‘MIXEDEXTENT‘}, filenum, pagenum [, objectid, indid])

DBCC flush (‘data‘ | ‘log‘, dbid)

DBCC flushprocindb (database)

DBCC free dll_name (FREE)

DBCC freeproccache

DBCC freeze_io (db)

DBCC getvalue (name)

DBCC help (‘DBCC_command‘ | ‘?‘)

DBCC icecapquery (‘dbname‘, stored_proc_name [, #_times_to_icecap  (-1 infinite, 0 turns off)]) Use ‘DBCC icecapquery (printlist)‘ to see list of SP‘s to profile. Use ‘DBCCicecapquery (icecapall)‘ to profile all SP‘s.

DBCC incrementinstance (objectname, countername, instancename, value)

DBCC ind ( { ‘dbname‘ | dbid }, { ‘objname‘ | objid }, { indid | 0 | -1 | -2 } )

DBCC indexdefrag ({dbid | dbname | 0}, {tableid | tablename}, {indid | indname})

DBCC inputbuffer (spid)

DBCC invalidate_textptr (textptr)

DBCC invalidate_textptr_objid (objid)

DBCC iotrace ( { ‘dbname‘ | dbid | 0 | -1 }, { fileid | 0 }, bufsize, [ { numIOs | -1 } [, { timeout (sec) | -1 } [, printopt={ 0 | 1 }]]] )

DBCC latch ( address [, ‘owners‘] [, ‘stackdumps‘])

DBCC lock ([{‘DUMPTABLE‘ | ‘DUMPSTATS‘ | ‘RESETSTATS‘ | ‘HASH‘}]|[{‘STALLREPORTTHESHOLD‘, stallthreshold}])

DBCC lockobjectschema (‘object_name‘)

DBCC log ([dbid[,{0|1|2|3|4}[,[‘lsn‘,‘[0x]x:y:z‘]|[‘numrecs‘,num]|[‘xdesid‘,‘x:y‘]|[‘extent‘,‘x:y‘]|[‘pageid‘,‘x:y‘]|[‘objid‘,{x,‘y‘}]|[‘logrecs‘,{‘lop‘|op}...]|[‘output‘,x,[‘filename‘,‘x‘]]...]]])

DBCC loginfo [({‘database_name‘ | dbid})]

DBCC matview ({‘PERSIST‘ | ‘ENDPERSIST‘ | ‘FREE‘ | ‘USE‘ | ‘ENDUSE‘})

DBCC memobjlist [(memory object)]

DBCC memorymap

DBCC memorystatus

DBCC memospy

DBCC memusage ([IDS | NAMES], [Number of rows to output])

DBCC monitorevents (‘sink‘ [, ‘filter-expression‘])

DBCC newalloc - please use checkalloc instead

DBCC no_textptr (table_id , max_inline)

DBCC opentran [({‘dbname‘| dbid})] [WITH TABLERESULTS[,NO_INFOMSGS]]

DBCC outputbuffer (spid)

DBCC page ( {‘dbname‘ | dbid}, filenum, pagenum [, printopt={0|1|2|3} ][, cache={0|1} ])

DBCC perflog

DBCC perfmon

DBCC pglinkage (dbid, startfile, startpg, number, printopt={0|1|2}, targetfile, targetpg, order={1|0})

DBCC pintable (database_id, table_id)

DBCC procbuf [({‘dbname‘ | dbid}[, {‘objname‘ | objid}[, nbufs[, printopt = { 0 | 1 } ]]] )]

DBCC proccache

DBCC prtipage (dbid, objid, indexid [, [{{level, 0} | {filenum, pagenum}}] [,printopt]])

DBCC pss [(uid[, spid[, printopt = { 1 | 0 }]] )]

DBCC readpage ({ dbid, ‘dbname‘ }, fileid, pageid, formatstr [, printopt = { 0 | 1} ])

DBCC rebuild_log (dbname [, filename])

DBCC renamecolumn (object_name, old_name, new_name)

DBCC resource

DBCC row_lock (dbid, tableid, set) - Not Needed

DBCC ruleoff ({ rulenum | rulestring } [, { rulenum | rulestring } ]+)

DBCC ruleon (  rulenum | rulestring } [, { rulenum | rulestring } ]+)

DBCC setcpuweight (weight)

DBCC setinstance (objectname, countername, instancename, value)

DBCC setioweight (weight)

DBCC show_statistics (‘table_name‘, ‘target_name‘)

DBCC showcontig (table_id | table_name [, index_id | index_name] [WITH FAST, ALL_INDEXES, TABLERESULTS [,ALL_LEVELS]])

DBCC showdbaffinity

DBCC showfilestats [(file_num)]

DBCC showoffrules

DBCC showonrules

DBCC showtableaffinity (table)

DBCC showtext (‘dbname‘, {textpointer | {fileid, pageid, slotid [,option]}})

DBCC showweights

DBCC shrinkdatabase ({dbid | ‘dbname‘}, [freespace_percentage [, {NOTRUNCATE | TRUNCATEONLY}]])

DBCC shrinkdb  is no longer supported. Please use shrinkdatabase instead

DBCC shrinkfile ({fileid | ‘filename‘}, [compress_size [, {NOTRUNCATE | TRUNCATEONLY | EMPTYFILE}]])

DBCC sqlmgrstats

DBCC sqlperf (LOGSPACE)({IOSTATS | LRUSTATS | NETSTATS | RASTATS [, CLEAR]} | {THREADS} | {LOGSPACE})

DBCC stackdump [( {uid[, spid[, ecid]} | {threadId, ‘THREADID‘}] )]

DBCC tab ( dbid, objid )

DBCC tape_control {‘query‘ | ‘release‘}[,(‘\\.\tape<n>‘)]

DBCC tec [( uid[, spid[, ecid]] )]

DBCC textall [({‘database_name‘|database_id}[, ‘FULL‘ | FAST] )]

DBCC textalloc ({‘table_name‘|table_id}[, ‘FULL‘ | FAST])

DBCC thaw_io (db)

DBCC traceoff [( tracenum [, tracenum ... ] )]

DBCC traceon [( tracenum [, tracenum ... ] )]

DBCC tracestatus (trace# [, ...trace#])

DBCC unpintable (dbid, table_id)

DBCC updateusage ({‘database_name‘| 0} [, ‘table_name‘ [, index_id]]) [WITH [NO_INFOMSGS] [,] COUNT_ROWS]

DBCC upgradedb (db)

DBCC usagegovernor (command, value)

DBCC useplan [(number_of_plan)]

DBCC useroptions

DBCC wakeup (spid)

DBCC writepage ({ dbid, ‘dbname‘ }, fileid, pageid, offset, length, data)  

Note: Please DONOT use DBCC commands on Production or live database without consulting your Database administrators.

List Available DBCC Commands