ODP.NET Oracle.ManagedDataAcess random ORA-12570 errors

Question

I\'m trying to migrate to Oracle.ManagedDataAcess from unmanaged version and receiving randoms ORA-12570 TNS:packet reader failure.

I don\'t know why this error sta

Answer 1

I encountered this same intermittent error using SQL Server Reporting Services 2016 with ODAC 12c Release 4:

Error:
An error has occurred during report processing. (rsProcessingAborted) 
Query execution failed for dataset 'TermPrompt'. (rsErrorExecutingCommand) 
ORA-12570: Network Session: Unexpected packet read error 
ORA-12570: Network Session: Unexpected packet read error 
ORA-12537: Network Session: End of file

Adding the pooling parameter Data Source="myOracleDB";Pooling="false" to the Oracle data source in SSRS completely resolved the problem.

An immediate re-execution of the report works fine.

I realize there are potential performance issues in creating a new connection each time rather than using the pool, but until Oracle fixes this, I don't want my users encountering this error.