Database Administrators Asked on November 15, 2021
After some time idle, if users try to use the our system, we receive the error:
ORA-03114 - not connected to Oracle.
I know there’s a parameter called SQLNET.EXPIRE_TIME.
the recomendation is SQLNET.EXPIRE_TIME=10 but I didn’t find what this 10 means.
I’m a SQL Server DBA trying to help our Oracle senior dba.
Our sqlnet.ora file is like this:
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES = (NTS)
Shoud I add **SQLNET.EXPIRE_TIME=10** on it?
To simulate the error, if we open the software and leave it idle for 1hr, we receive the error.
IDLE_TIME is unlimited too on dba_profiles.
Yes, that will work. The 10 is a value in minutes (documentation link).
To specify a time interval, in minutes, to send a check to verify that client/server connections are active
The official Oracle documentation regarding DCD (Dead Connection Detection) is here.
The primary purpose of SQLNET.EXPIRE_TIME=10 is to clean up dead connections, but (I quote):
A less common usage scenario for DCD is to keep database connections alive when an external firewall timeout is configured to terminate idle connections
Answered by Philᵀᴹ on November 15, 2021
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