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ORA-06449:

The list IO or the sysvendor is not installed.
Cause: ORACLE 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.
Action: Set use_sysvendor=false in INIT.ORA, if you don't want to use this interface or link the UNIX kernel with this interface so that ORACLE can use it.