Backup during re-index

  • We have a database that at times can take up to 18 days to re-index. The database is in simple recovery model and runs a full backup every 12 hours to storage directory not on this SQL Server. Randomly the backup will fail with the following error messages to SQL logs.

    Error: 18210, Severity: 16, State: 1.

    BackupIoRequest::ReportIoError: write failure on backup device 'PATH\FileName.bak'. Operating system error 2(The system cannot find the file specified.).

    Error: 3041, Severity: 16, State: 1.

    BACKUP failed to complete the command BACKUP DATABASE dbname. Check the backup application log for detailed messages.

    Error: 3634, Severity: 16, State: 2.

    The operating system returned the error '64(The specified network name is no longer available.)' while attempting 'SetEndOfFile' on 'PATH\FileName.bak'.

    Error: 3634, Severity: 16, State: 2.

    The operating system returned the error '64(The specified network name is no longer available.)' while attempting 'FlushFileBuffers' on 'PATH\FileName.bak'.

    I feel this must be a network connection issue, but our network engineers are not seeing anything on their end. Is it possible re-index could cause something like this?

  • Nothing to do with reindex.

    The reason's given. "The specified network name is no longer available.", the network dropped and the backup failed as a result.

    p.s. 18 days to reindex? What's that, a 100+TB database you have there?

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

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