B Troubleshooting

This appendix contains information on troubleshooting.

Topics:

• Enabling Debug Tracing

• Enabling Detailed Request Error Messages

Enabling Debug Tracing

Add the following setting to the Oracle Application Express Listener configuration file named: defaults.xml to enable debug tracing.

<entry key="debug.debugger">true</entry>

When this setting is present in defaults.xml, detailed logging information that may help with problem diagnosis is appended to the Oracle Application Express Listener log output. This setting should not be enabled on production systems due to the performance impact of outputting large amounts of data to the log.

Enabling Detailed Request Error Messages

Add the following setting to the Oracle Application Express Listener configuration file named: defaults.xml to enable detailed request error messages.

<entry key="debug.printDebugToScreen">true</entry>

When this setting is present in defaults.xml, any request that produces an error response includes a detailed message, including a stack trace. This setting must not be enabled on productions systems due to the risk of sensitive information being revealed to an attacker.