TCP/IP KEEPALIVE field (TCPKPALV subsystem parameter)
The TCPKPALV subsystem parameter determines whether the TCP/IP KeepAlive value in the TCP/IP configuration is to be overridden with a different value. This option can be used in cases where the TCP/IP KeepAlive value in the TCP/IP configuration is not appropriate for the DB2® subsystem.
| Acceptable values: | ENABLE, DISABLE, or 1 to 65534 |
| Default: | 120 |
| Update: |  option 32 on
panel DSNTIPB |
| DSNZPxxx: | DSN6FAC TCPKPALV |
- ENABLE
- The TCP/IP KeepAlive configuration value is not overridden.
- DISABLE
- KeepAlive probing is disabled for this subsystem.
- 1 to 65534
- The TCP/IP KeepAlive configuration value is overridden with the value of the TCP/IP KEEPALIVE field. This value is specified in seconds. Consider setting this value close to the IDLE THREAD TIMEOUT value on installation panel DSNTIPR or the RESOURCE TIMEOUT value on installation panel DSNTIPI.
Avoid using very small values. KeepAlive detection is accomplished by probing the network based on the time that is entered in the KeepAlive parameter. A small KeepAlive value can cause excessive network traffic and system resource consumption. Maintain a proper balance that allows network failures to be detected on a timely basis without a severe impact on system and network performance.