ORA-03135 On RMAN Duplicate between two Servers

刘泽宇

现象：
RMAN Duplicate database failing with error:

RMAN-03009: failure of backup command
RMAN-06136: ORACLE error from auxiliary database
ORA-03135: connection lost contact
Setting SQLNET.EXPIRE_TIME=10 parameter in SQLNET.ORA file on both hosts did not resolve the error

原因：
There could be cases where Duplicate runs fine between two Servers while on others it fails on the error

This can happen when the bandwidth is different. let's say for example in the first case where the connection is using 1Gbits but then on a new server the connection runs with 10Mbits bandwidth

处理方法：
Review if you have any Firewall or Network monitor timing out the connections.

Set SQLNET.EXPIRE_TIME=5 parameter in SQLNET.ORA file on the Target, Auxiliary, and Recovery Catalog hosts. Setting the parameter will send a ping across the network every 5 minutes thereby letting the network
monitor or a firewall to keep the connection alive.