Home » RDBMS Server » Networking and Gateways » ORA-12537: TNS:connection closed
ORA-12537: TNS:connection closed [message #6493] Mon, 21 April 2003 13:43
Naren
Messages: 8
Registered: October 2001
Junior Member
Hi,

Last week I upgraded an old 8.1.6 db to 8.1.7 on Windows NT. I created a new instance on the upgraded db. I can connect to the instance, the users that I created on it, access tables etc. using sql*plus on that machine but when I try to connect it from any other machine, I get the error "ORA-12537: TNS:connection closed". Also, if I use Oracle db studio on the same NT machine, I get the same error message.

Any help and guidance is appreciated.

Thanks
Naren
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