Troubleshooting Guide ORA-3136: WARNING Inbound Connection Timed Out
(Doc ID 465043.1)
Last updated on MAY 18, 2023
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.5 and later
Oracle Net Services - Version 10.2.0.5 and later
Information in this document applies to any platform.
The default timeout for INBOUND CONNECT TIMEOUT at both the database and listener was introduced in version 10gR2 RDBMS.
The Oracle Net parameters SQLNET.INBOUND_CONNECT_TIMEOUT and INBOUND_CONNECT_TIMEOUT_listener_name now default to 60 seconds.
If any client fails to provide credentials or for any reason cannot complete the authentication process in 60 seconds or less, this error will be thrown
in the alert.log:
WARNING: inbound connection timed out (ORA-3136)
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