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:
10.2.0.3:
Solaris SPARC 64-bit
Linux x86
AIX5L 64-bit
10.2.0.2:
Linux x86
Linux x86-64
AIX5L 64-bit