Expire_time Sqlnet.ora 19c Better May 2026

Check your 19c database servers:

lsnrctl stop lsnrctl start Check an active session’s DCD setting:

The value is in . A setting of 10 means the server will send a probe every 10 minutes. 3. Restart Listener (Not Required, but Recommended) Actually, sqlnet.ora changes take effect for new connections only . Existing sessions will not inherit the new setting. expire_time sqlnet.ora 19c

grep expire_time $ORACLE_HOME/network/admin/sqlnet.ora If it returns nothing, add expire_time = 10 and sleep better tonight. Have you seen unexpected session cleanup due to network latency? Or do you combine expire_time with DCD on the listener? Share your experience below!

expire_time = 15 SQLNET.INBOUND_CONNECT_TIMEOUT = 60 SQLNET.RECV_TIMEOUT = 60 SQLNET.SEND_TIMEOUT = 60 Combine expire_time with inbound timeouts to protect against both idle zombies and hung network I/O. expire_time in Oracle 19c is a small parameter with a massive impact on stability. It requires no application changes, adds minimal overhead (one tiny packet every N minutes), and prevents orphaned sessions from ruining your database health. Check your 19c database servers: lsnrctl stop lsnrctl

lsnrctl reload Or for a clean start:

To be safe:

In Oracle 19c, the classic Dead Connection Detection (DCD) mechanism, configured via expire_time in sqlnet.ora , remains the most reliable way to solve this.