New Connections Intermittently Rejected with TNS-12525
(Doc ID 566886.1)
Last updated on MARCH 31, 2022
Applies to:
Oracle Net Services - Version 12.1.0.2 and laterOracle Database - Enterprise Edition - Version 19.14.0.0.0 to 19.14.0.0.0 [Release 19]
Information in this document applies to any platform.
Symptoms
At regular intervals (every three hours), you see new connections rejected with TNS-12525 "listener has not received client's request in time allowed".
The listener log shows the following error stack :
Wireshark (Ethereal) traces show the TCP 3-way handshake never completes for those connections.
Changes
Value of idle timer was recently changed at firewall level.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |