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ADW APEX - 503 Service Unavailable

Received Response
edited Sep 15, 2020 8:32AM in Autonomous Database 16 comments


Unable to connect to ADW from APEX or SQL Developer - ORDS Error 503 Service Unavailable



I hope you are all well.

I am having trouble accessing my ADW from either APEX (backend) and applications or SQL Developer using the connection wallet. In APEX I get the following error. In SQL Developer it just hangs when trying to connect.

503 Service Unavailable

  • ORDS was unable to make a connection to the database. This can occur if the database is unavailable, the maximum number of sessions has been reached or the pool is not correctly configured. The connection pool named: |ocid1.tenancy.oc1..aaaaaaaaiwpcyw463j6qqrad64dsxy326znfvi3gzib66igalx4wkh4clkiq-yarn|re| had the following error(s): Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: Cannot get Connection from Datasource: java.sql.SQLRecoverableException: IO Error: Connection closed, Authentication lapse 0 ms.

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