To facilitate troubleshooting of unexplained DBMS timeouts, you can enable the fault monitor to create a core file when a probe timeout occurs. The contents of the core file relate to the fault monitor process. The fault monitor creates the core file in the root (/) directory. To enable the fault monitor to create a core file, use the coreadm command to enable set-id core dumps.
# coreadm -g /var/cores/%f.%n.%p.core -e global -e process \ -e global-setid -e proc-setid -e log
For more information, see the coreadm (1M) man page.