Client Connections Intermittently Fail With ORA-12539 Error in RAC Environment
(Doc ID 602879.1)
Last updated on MARCH 31, 2022
Applies to:Oracle Net Services - Version 10.1.0.3 to 220.127.116.11 [Release 10.1 to 11.1]
Information in this document applies to any platform.
This problem can occur on any platform.
Client connections may fail with ORA-12539 errors in a RAC environment or in an environment where the REMOTE_LISTENER parameter is set in the database.
ORA-12539 TNS:buffer over- or under-flow
Specifically, if the NSPTRD packet size is over 532 bytes, clients may receive the ORA-12539.
This may be a new installation of RAC or the REMOTE_LISTENER parameter has been recently added or changed.
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