Ms Sql 2005 Error 824
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Sql Server Detected A Logical Consistency-based I/o Error Incorrect Pageid
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handle error 824? Discussion in 'SQL Server 2005 General DBA Questions' started by pcsql, Jan 8, 2008. pcsql New Member A client has encountered the error 824 and the sql server log contains this information: SQL Server detected a logical
Sql Server Detected A Logical Consistency Based I O Error Invalid Protection Option
consistency-based I/O error: torn page (expected signature: 0x55555555; actual signature: 0x55565555). It occurred during a read complete a full database consistency check (dbcc checkdb) of page (3:757128) in database ID 5 at offset 0x00000172150000 in file 'c:mydata... Running dbcc checkdb on that database returns no error. What are the page_verify checksum possible causes for torn page? Should I ask my client to run some MS utilities? I find a MS utility named SQLIOSim. Thanks for any help. pcsql, Jan 8, 2008 #2 Luis Martin Moderator Check: http://technet.microsoft.com/en-us/library/ms174425.aspx HTH Luis Martin, Jan https://support.microsoft.com/en-us/kb/2015756 8, 2008 #3 pcsql New Member Hi Luis, I have also read that page but I don't know how I can use the data from the suspect_pages table to resolve the error or pinpoint which database object is corrupted. Thanks. pcsql, Jan 8, 2008 #4 satya Moderator What level of service pack on SQL you have here? Also I would suggest this is a hardware based problem that is causing torn page and error on the data file, could be a controller http://www.sql-server-performance.com/forum/threads/how-to-handle-error-824.25022/ issue or mismatch of firmware drivers. Check Event logs for Hardware problems. Database corruption is usually caused by failing hardware, and obviously a good idea to fix the hardware before proceeding. Maybe a disk in a RAID failed and the controller failed to complete the disk write (that would cause a Torn page error); a power cut could probably do it too. Additionally look at the TEMPDB contention too. FOr data correction you could create another table and use DTS to import rows from this troubled table, as RESTORE will not have resolution as it will restore the corrupted page again. satya, Jan 9, 2008 #5 pcsql New Member Hi Satya, I believe the server pack is either SP1 or SP2 of SQL Server 2005. The SQL Server 2005 is installed on a virtual server. I also speculate that it is hardware problem. Should DBCC CHECKDB report torn page corruption? Is torn page a physical corruption or a logical (not sure how to term this) corruption happened during I/O? The error for my client occurred during high I/O. If it is hardware problem, should MS tool like SQLIOsim.exe report errors? pcsql, Jan 9, 2008 #6 satya Moderator [] Too many questions... Check what kind of SP you have, do not speculate and it is better to have a thorough checkout on the physical server from the vendor. DBCC CHECKDB is required for database consistency checkup, high IO means you need to see what kin
Related Tips: More > Disaster Recovery Problem Corrupt SQL Server databases are the worst nightmare of any SQL Server professional. In any environment, from https://www.mssqltips.com/sqlservertip/2871/troubleshooting-and-fixing-sql-server-page-level-corruption/ small business to enterprise, the compromise of integrity and availability of the http://www.symantec.com/connect/forums/error-824-database data can constitute a business emergency. This is especially the case in those organizations reliant on an OLTP data model, for a high-volume website. SQL Server database corruption and disruption of the transaction processing system can cause business repercussions such as large financial losses, a drop in reputation sql server or customer retention, or contractual SLA problems with the service provider, if not managed in-house. This tip will demonstrate the diagnosis process, discuss one method of correcting page-level corruption without using the REPAIR options with the DBCC CHECKDB command and outline how to get the SQL Server back online. Solution Diagnosis - SQL Server Corruption Normally any business will have sql server detected contingency plans to deal with SQL Server database corruption scenarios, and any good database professional will have immediately thought of a number of strategies to deal with these. Items such as disaster recovery plans, replication, Database Mirroring\AlwaysOn, Clustering, etc. However, sometimes these options are not appropriate. Imagine you have a 20GB database populated with records of your customers and records of each transaction linked back to your customers. You have two .mdf data files. You are using the full recovery model, full backups are taken daily at 21:00 with transaction log backups taken every 15 minutes. You don't use mirroring, replication or clustering, instead of relying on a robust backup model to protect your data. At 20:00, a message like this occurs: Msg 824, Level 24, State 2, Line 1 SQL Server detected a logical consistency-based I/O error: unable to decrypt page due to missing DEK. It occurred during a read of page (3:0) in database ID 10 at offset 0000000000000000 in file 'c:\del\corruption_secondary.mdf'. Additional messages in the SQL Server error log or system event log may provide