DBCC error messages

The following table lists the most important messages in the DBCC output.

**Table 2-10: DBCC error messages**
DBCC message	Description/action
Inconsistent Index Count	The number of indexes that DBCC found to have inconsistencies.
Inconsistent Index	The name of an index that DBCC found to be inconsistent.
Repaired Index Count	The number of indexes that DBCC attempted to repair.
Repaired Index	The name of an index that DBCC has attempted to repair.
Extra Index RIDs Repaired Missing Index RIDs Repaired Duplicate Index RIDs Repaired Extra Index RIDs Missing Index RIDs Duplicate Index RIDs	The total number of rows that are inconsistent for all inconsistent indexes.
Bitmap Verify Errors	The total number of inconsistent bitmaps in all database objects.
FP Lookup Table Inconsistencies	An unrepairable error, where the 1-byte or 2-byte FP is internally inconsistent.
Non-Completed Index Count	The number of indexes that could not be verified, because an exception occurred while checking.
Non-Completed Index	The name of an index that was not verified because an exception occurred while checking. If the exception is a future version, out of memory, or out of buffers error, commit the DBCC connection and re-run DBCC.
HG Missing Groups HG Missing Groups Repaired HG Extra Groups HG Extra Groups Repaired HG Extra Keys HG Extra Keys Repaired HG Missing Keys HG Missing Keys Repaired B-Tree Invalid Item Count B-Tree Invalid Item Count G-Array Empty Page Errors G-Array Bad Group Type Errors G-Array Out of Order Group Errors	High Group index specific errors and repair messages.
VDO Incorrect First Available Fields VDO Incorrect Next Available Fields VDO Incorrect Used Count Fields VDO Incorrect In-use Bitvec VDO Incorrect In-use Bitmap VDO Incorrect Partial Bitmap VDO Incorrect Deleted Bitmaps	Unrepairable errors that can cause entire tables to be inaccessible. You must force drop the inconsistent table to resolve these errors.
Block Count Mismatch	This count accompanies other allocation errors.
Blocks Leaked 1st Unowned PBN	Blocks that were found not to be in use by any database object. Use -iqdroplks to repair.
Blocks with Multiple Owners 1st Multiple Owner PBN	Blocks in use by more than one database object. Drop the object that is reported as inconsistent.
Unallocated Blocks in Use 1st Unallocated PBN	Blocks in use by a database object, but not marked as in use. Use -iqdroplks to repair.
Freelist Updated	Indicates successful allocation repair.
Freelist Not Updated	Indicates errors detected during allocation repair and the allocation repair was not successful.
Invalid Blockmap Unique ID Generator Blockmap Unique ID Generator Updated Invalid Transaction ID Counter Transaction ID Generator Updated	Errors and repair messages specific to the DBCC resetclocks option.
DBCC Future Version Errors	DBCC could not open the table, because DDL was performed on it. Commit the DBCC connection and re-run DBCC.
DBCC Out of Buffers Errors	The size of the IQ main cache is too small. Either increase the main cache size or run DBCC on individual objects.
DBCC Out of Memory Errors	There is insufficient system memory to complete the DBCC operation.
DBCC Meta-data Errors Blockmap Invalid Chunksize Error Count Blockmap Compression Bit Error Count Blockmap Invalid Block Number Error Count	An internal page mapping structure is inconsistent and the object needs to be dropped.
DBCC Page Read Errors	An I/O error occurred while trying to read an object. Perform hardware diagnostics.
DBCC Inconsistent Disk Block Headers DBCC Decompress Errors	The storage for the object is inconsistent and the object needs to be dropped.
DBCC Unknown Exceptions	An exception of a type unknown to DBCC occurred. Check the IQ message file for details.