HiOccasionally (once every 3 months or so) CHECKDB fails on our busiest database on our VMware management SQL Server instance (this is a VM itself 10.0.5775). No other VMs give problems.To troubleshoot recovery options, I then restore the database from a backup taken after the CHECKDB failed (using Symantec NetBackup) to another instance (physical 10.0.5828), but when I run CHECKDB on the restored database, it returns no errors whatsoever.Can anyone perhaps shed any light on why CHECKDB might succeed on the restored copy, after the (corrupt) DB is restored to another instance? Thank you!Msg 8909, Level 16, State 1, Line 1Table error: Object ID 0, index ID -1, partition ID 0, alloc unit ID 0 (type Unknown), page ID (3:89710) contains an incorrect page ID in its page header. The PageId in the page header = (0:0).Msg 8909, Level 16, State 1, Line 1Table error: Object ID 0, index ID -1, partition ID 0, alloc unit ID 0 (type Unknown), page ID (3:89711) contains an incorrect page ID in its page header. The PageId in the page header = (0:0).CHECKDB found 0 allocation errors and 2 consistency errors not associated with any single object.Msg 8928, Level 16, State 1, Line 1Object ID 1401772051, index ID 1, partition ID 72057603137601536, alloc unit ID 72057616695885824 (type In-row data): Page (3:89709) could not be processed. See other errors for details.Msg 8939, Level 16, State 98, Line 1Table error: Object ID 1401772051, index ID 1, partition ID 72057603137601536, alloc unit ID 72057616695885824 (type In-row data), page (3:89709). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 29493257 and -4.Msg 8928, Level 16, State 1, Line 1Object ID 1401772051, index ID 1, partition ID 72057603137601536, alloc unit ID 72057616695885824 (type In-row data): Page (3:89710) could not be processed. See other errors for details.Msg 8928, Level 16, State 1, Line 1Object ID 1401772051, index ID 1, partition ID 72057603137601536, alloc unit ID 72057616695885824 (type In-row data): Page (3:89711) could not be processed. See other errors for details.CHECKDB found 0 allocation errors and 4 consistency errors in table 'VPX_HIST_STAT2_8' (object ID 1401772051).CHECKDB found 0 allocation errors and 6 consistency errors in database 'VCDB'.repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB (VCDB).DBCC execution completed. If DBCC printed error messages, contact your system administrator.
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