Anyways now I uninstalled and reinstalled SQL server 2005.
I added ;-T1400 in both Principal & mirror server start parameters.
If both are SP1 or higher, take it out. If not, patch both to SP2 or SP3 and then take it out.
By the way, why DBCC TRACEON(1400) is used..?
Because mirroring was unsupported and disabled in RTM and should not be used. After SP1, mirroring was enabled by default and the need for that traceflag fell away
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
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