[GENERAL] Replication err

[Khizer]

Hi,

      I am doing streaming replication master-slave with 
postgresql-9.0.4 , i am getting following err
how do i correct this

 streaming replication successfully connected to primary
2012-10-03 00:00:06 IST FATAL:  could not receive data from WAL stream: 
FATAL:  requested WAL segment 000000010000000000000011 has already been 
removed


Regards
Mehdi


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