I have the following errors when trying to use Oracle. Oracle is installed on Aix 4.
Besides the errors I was able to create users, tablespaces ... The problem arrived when I tried to drop a user or a table (using the system user). Since I need to drop some users I am blocked.
I will be very thankful if somebody tries to help me.

--- Error during connection

ORA-06553: PLS-801: internal error [56319]

Error accessing package DBMS_APPLICATION_INFO
ORA-06553: PLS-801: internal error [56319]

Connected to:
Oracle8i Enterprise Edition Release - 64bit Production
With the Partitioning option
JServer Release - 64bit Production
---- Error when trying DROP command

SQL> drop user mjsite1 cascade;
drop user mjsite1 cascade
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 2
ORA-06544: PL/SQL: internal error, arguments: [56319], [], [], [], [], [], [],
ORA-06553: PLS-801: internal error [56319]