This ORA-600 is a result of the Oracle server’s server alert subsystem (DBMS_SERVER_ALERT) being unable to determine the local host name. Most frequently, this is due to DNS (domain name service) not being available. This error can result in instance failure (crash) or inability to start up.
Patches for 10.2.0.2 and 10.2.0.3 available for:
Solaris SPARC 64-bit