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Oracle HS issue conecting to sqlserver ORA-28500 and ORA-2063 connection from ORACLE to a non-Oracle

edited Jun 10, 2016 5:00AM in Gateways, Oracle Lite, Oracle DB Mob. Server, TimesTen (MOSC) 4 commentsAnswered

Hi We have only yesterday started receiving the following alerts in an alert log ORA-28500 and ORA-2063

The HS / database link is to a SQLserver database

The oracle database is back level (11.2.0.1). I applied a patch to the DB 2 days ago to fix TNS Poisoning vulnerability - was applied to implement COST doc id 1453883.1.

No error is showing in the listener log. Added the following line to the listener.ora

SECURE_REGISTER_LISTENER_PROD = (TCP) 

We are currently unable to upgrade this particular Oracle database.

On checking the sqlserver log I see the following error:

Login failed for user 'RECOVER'  reason could not find a login matching the name provided [CLIENT: 10.*.*.*]

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