Please help in the db connectivity problem after Server moves to the location of diff
Our database is 10.2.0.3 with 2 RAC nodes. Our database servers are MS 2003 R2. Recently, we moved our database on different servers in the other location. Say that we pitch A, B and C.A - the location for the database users understand me.
B - the former location of the db
C - the new location of the db.
Location B and C are in the same city but different places. A and B are located in different cities. I was told that there is no direct link between A and C and the link between A and C must pass through B. Since the move we have experienced the problem of connectivity of database between A and C. Some users got "ORA-03113: end of file on the communication channel. For me, I constantly "ORA-03135: connection lost contact" Sqlplus or Toad if I leave my session idle for an hour or more, no matter if it uses dedicated or shared connection. We also asked our network administrator to make sure that there is no firewall between the two and we have also added KeepAliveTime and KeepAliveInterval the new db server record. We also have a TAR with Oracle.
Thanks a lot for your help in advance.
Shirley
Connections this time-out when left idle for an hour feels very strongly to a firewall issue. The fact that you are going through Site B and cannot connect directly to Site c. imply strongly that there is a firewall at Site C. Since B can communicate with C, I would bet that there is a hole in the firewall allows connections between B and C. But firewalls commonly kill idle connections after a timeout: you would need to talk to the administrator of the firewall to determine how to configure the firewall to allow connections to be idle indefinitely.
Justin
Tags: Database
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