In Microsoft SQL Server 2008, you are able to configure the database mirroring in between two database. It improves database reliability and protect against data reduction scenarios, if one particular database will get broken due to any cause. In the event of failure, you are able to restore the duplicate of one’s database from mirror database. On the other hand, for those who unintentionally clear away the transaction log files on SQL Server database, database mirroring session is damaged by principle server. Soon after this behavior, it is possible to not restore the information from mirror server if principle server fails. It leads to database corruption and involve SQL Database Recovery to become fixed, if backup isn’t obtainable.
Like a useful instance of this difficulty, contemplate the underwritten scenario:
In Microsoft SQL Server 2008 SP1 (Service Pack 1) or Microsoft SQL Server 2008, you configure mirroring amongst two databases.
You run ALTER DATABASE command in conjunction with Take away FILE clause for taking away the transaction log files of SQL Server database on principal server.
Inside the above scenario, database mirroring session is aborted and you’ll not resume it. Concurrently, you will get the beneath assertion:
“Location: “logmgr.cpp”:3350Expression: headLFCB->lfcb_startOffset < fcb->GetSize () * (ULONGLONG)PAGESIZE”
In addition, the under error message is logged in SQL Server Function Log:
“<Date><Time> spid23s A procedure assertion check out has failed. Examine the SQL Server error log for specifics. Typically, an assertion failure is brought on by a application bug or info corruption. To test for database corruption, look at running DBCC CHECKDB. For those who agreed to deliver dumps to Microsoft during setup, a mini dump might be sent to Microsoft. An update could be out there from Microsoft while in the newest Service Pack or in a QFE from Technical Assist.”
Trigger:
The situation will take spot due to mistaken log area tracking on mirror database. It may possibly also arise due to Microsoft SQL Server database (MDF file) corruption.
Resolution:
In case the trouble is brought about by wrong log area tracking, download most current update on SQL Server and set up it. Alternatively, if MDF corruption is resulting in the situation, you have to go for SQL Server Recovery to type out the issue.
SQL Recovery is potential through advanced and helpful third-party instruments, recognized as MS SQL Fix software package. The programs use superior scanning methods to make certain absolute and quick recovery in all scenarios of SQL Server database corruption.
Stellar Phoenix SQL Recovery is really a read-only and simple to use utility that makes sure excellent recovery from every type of database corruption scenarios. The software is constructed for Microsoft SQL Server 2008, 2005, and 2000. It retrieves all MDF file objects, like tables, reports, macros, kinds, constraints, saved procedures, and triggers.microsoft sql server