I am seeing sporadic reports of an application failing certain queries with an "End of TNS data channel" error from the Oracle (10g) server. Are there any queries I can run (e.g., with SQL*Plus or other tool) to ask the Oracle server what was the cause of such failures? What logs should I look for?
How to debug “IO Error: End of TNS data channel” errors
oracleoracle-10g
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Best Answer
You could check the alert log, as described in the Stack Overflow Q & A:
How to find and tail the Oracle alert log
...where the question author tardate says:
The accepted answer by cagcowboy adds: