exp error

wowsky

Hello everyone
  
   I used exp to export data and reported an error. The error number reported was 19206.
   How do I resolve this.
   Thank you everyone.

whbilly

ORA-19206 Invalid value for query or REF CURSOR parameter

Cause: The queryString argument passed to DBMS_XMLGEN.newContext was not a valid query or REF CURSOR.

Action: Rewrite the query so that the queryString argument is a valid query or REF CURSOR.

There is a problem with the query parameter

wowsky

whbilly:
The specific error content is as follows
oracle error 19206 encountered
invalid value for query or ref cursor parameter
at "sys.dbms_xmlgen", line 83
at "sys.dbms_metadata", line 345
at "sys.dbms_metadata", line 410
at "sys.dbms_metadata", line 449
at "sys.dbms_metadata", line 1156
at "sys.dbms_metadata", line 1141
How to modify the query parameters can solve this problem.
Thank you.

whbilly

How is your exp file or command written