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The ORA-03135 / ORA-3113 on connecting from application to database hosted in OCI -Classic Environment (Doc ID 2444846.1)

Last updated on OCTOBER 03, 2019

Applies to:

Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.


The Environment is OCI-Classic. The application is running in Windows hosted in the Oracle Cloud OCI-Classic.
The Oracle Database server running in Oracle Linux hosted in the Oracle Cloud OCI -Classic. In the application log file, they are intermittently observing client disconnection.

In the application log, the ORA-03135 was reported Intermittently.

ORA-03135 connection lost contact Process ID: 18836 Session ID: 370 Serial number:52288

In the Database alert log file, TNS-00505 time out issue reported.

TNS-00505: Operation timed out
   ns main err code: 12535
   nt secondary err code: 110
   nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=<ip>)(PORT=59396))




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