Oracle Message ORA-06449 - The list IO or the sysvendor is not installed.

ERRORThe list IO or the sysvendor is not installed.
CAUSEORACLE tries to use the sysvendor interface (INIT.ORA parameter use_sysvendor=true) but the UNIX kernel does not have the ORACLE sysvendor interface linked in.
ACTIONSet use_sysvendor=false in INIT.ORA, if you dont want to use this interface or link the UNIX kernel with this interface so that ORACLE can use it.