help regarding database mirroring alert/error

  • All,

    We keep recieving this alert in the errorlog

    spid17s Error: 1479, Severity: 16, State: 1.

    2012-03-03 12:18:11.15 spid17s The mirroring connection to "TCP://xxx-xxx.xxxx.org:2323" has timed out for database "xxxxxxx" after 10 seconds without a response. Check the service and network connections.

    its been coming in every so often for the ppast few days . i cant figure out whats causing it . any ideas on where to look? the mirror history never shows any disconnets so im confused as to what this is actually indicating.

  • The default mirroring time out value is 10 seconds. You need to increase this number if you have more and more database transactions.

  • ok let me add a little more detail .

    so this alert is being logged on the mirror not the principal also

    The mirroring connection to "TCP://xxx-xxx.xxxx.org:2323"(this address is of the witness) has timed out for database "xxxxxxx"

    there is not anymore transactions going on especially on the weekend.

  • ok i noticed something that im unsure would cause the problem but will throw it out as well. the clock was off on this server thats generating the alert. its time was 5-6 minutes behind the mirror. i have resolved that issue now

  • You can increase the timeout value by below command.

    ALTER DATABASE XXXXX SET PARTNER TIMEOUT 30

  • can i perform this command on a live DB with no issues? and i should run it on the principal/mirror or both?

  • newbie_DBA (3/3/2012)


    can i perform this command on a live DB with no issues? and i should run it on the principal/mirror or both?

    This should be dynamic, execute this on the principal instance to extend the timeout value

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    "Ya can't make an omelette without breaking just a few eggs" 😉

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