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APEX not working/running on RMAN DUPLICATE db. Help to investigate

edited Jul 9, 2020 7:37AM in Database Administration (MOSC) 2 commentsAnswered ✓

Oracle 19.3 on Redhat Linux

APEX 5.1

Using embedded PLSQL gateway.

I have a test database created as a RMAN DUPLICATE from our prod DB.

The APEX does not work on the duplicate copy (it works on the prod Source DB).

The connection get reset immediately (i.e. a TCP connection is established by the client browser to 'something' but this is immediately disconnected by 'something')

The host for the duplicate also host a standby of our prod system. We have done a failover and the APEX works on the standby (using the same oracle home as my test database). I.e. It is not likely to be software issue on the host. Nor is it likely to be firewall/network issue (although I do use a different port not to conflict with the standby duties of the host).

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