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ORA-12537: TNS:connection closed

Ray_HNov 9 2011 — edited Nov 18 2011
Oracle DB: 11.2.0.1.0 on Linux x86

I've just installed a database patch, which seems to have gone well. A pre-requisite for this was shutting down the database.
Following install, I restarted the database but now cannot connect to it unless I'm connecting internally.

When I attempt to connect normally, I get this:
sqlplus ray@bvclone
SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 9 16:04:12 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Enter password:
ERROR:
ORA-12537: TNS:connection closed

I've looked at a number of threads on this, none of which seem to help.

Both tnsnames.ora and listener.ora are looking at the same port (1521)

The only clue I have is that tnsping gives different results when run as different users:

As oracle on Linux:
tnsping bvclone
(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = atlas)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = bvclone)))
OK (0 msec)

As myself on Linux:
tnsping bvclone

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 09-NOV-2011 16:09:51

Copyright (c) 1997, 2009, Oracle. All rights reserved.

Used parameter files:

Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=nn.nnn.nn.nnn)(PORT=1521)))
TNS-12535: TNS:operation timed out

I can see that the service name is missing, which suggests I'm missing something blindingly obvious here....any thoughts on what this could be would be much appreciated.

Thanks,
Ray

Edited by: 896276 on 09-Nov-2011 08:22

Edited by: 896276 on 09-Nov-2011 08:22
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Locked on Dec 16 2011
Added on Nov 9 2011
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