ORA-31403: change table string already contains a column string
Cause: Issued ALTER_CHANGE_TABLE with an add operation but a column by this name already exists in the specified table.
Action: Check the names and call the procedure again.

ORA-31232: DBMS_LDAP: invalid MOD_PROPERTY_SET
Cause: An attempt was made by a PL/SQL module to use a MOD_PROPERTY_SET which is not valid and might have already been freed.
Action: Check the MOD_PROPERTY_SET in PL/SQL module involving DBMS_LDAP.

ORA-31227: DBMS_LDAP: invalid LDAP MESSAGE handle
Cause: An attempt was made by a PL/SQL module to use an LDAP MESSAGE handle which is not valid and might have already been freed.
Action: Check the LDAP MESSAGE handle in PL/SQL module involving DBMS_LDAP.

ORA-31222: DBMS_LDAP: PL/SQL – Invalid LDAP SSL authentication mode.
Cause: There has been an error in the DBMS_LDAP operation.
Action: Please check the LDAP sslauth value that you use for LDAP operation, or report the error number and description to Oracle Support.

ORA-30434: refresh method must be one of FC?AN, not string
Cause: An invalid refresh method was specified
Action: Verify that the refresh method is one of FC?AN

ORA-30401: JOIN KEY columns must be non-null
Cause: The dimension statement failed because the column(s) in the JOIN KEY clause permitted NULL values. The JOIN KEY columns are related to the columns of the dimension s skip levels in one or both of the following ways:
1. A skip level is defined over one or more of the JOIN KEY columns.
2. The attribute clauses of a skip level determine one or more of the JOIN KEY columns.
Action: Modify the JOIN KEY columns so that they do not allow NULL values.

ORA-30394: source statement identical to the destination statement
Cause: The source statement was identical to the destination statement
Action: Make sure both source and destination statements are not identical

ORA-30384: specified column name does not exist in the attribute
Cause: A column was encountered that is not defined within the attribute.
Action: Check the attribute column name spelling.

ORA-30377: table string.MV_CAPABILITIES_TABLE not found
Cause: You have used the DBMS_MVIEW.EXPLAIN_MVIEW() API before you have defined the MV_CAPABILITIES_TABLE.
Action: Invoke the admin/utlxmv.sql script after connecting to the desired schema.

ORA-30372: fine grain access policy conflicts with materialized view
Cause: A fine grain access control procedure has applied a non-null policy to the query for the materialized view.
Action: In order for the materialized view to work correctly, any fine grain access control procedure in effect for the query must return a null policy when the materialized view is being created or refreshed. This may be done by ensuring that the usernames for the creator, owner, and invoker of refresh procedures for the materialized view all receive a null policy by the …