Intermittent Error ORA-12539 When Connecting To RAC
(Doc ID 352554.1)
Last updated on JANUARY 21, 2025
Applies to:
Oracle Net Services - Version 10.1.0.5 to 12.2.0.1 [Release 10.1 to 12.2]Oracle Cloud Infrastructure - Database Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Gen 2 Exadata Cloud at Customer - Version N/A and later
Oracle Database - Enterprise Edition - Version 19.24.0.0.0 and later
Information in this document applies to any platform.
This problem can occur on any platform.
Symptoms
Remote client connections to RAC version 10g or newer are intermittently failing with ORA-12539 TNS:buffer over- or under-flow
Changes
This may be a new installation of RAC and the LOCAL_LISTENER parameter may have recently been added or changed.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |