ORA-22999: CLOB or NCLOB data may have

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ORA-22999: CLOB or NCLOB data may have been corrupted
Cause: CLOB or NCLOBcontains invalid character data. One possible cause is
that the wrong csid was specified for the external file when calling DBMS_
LOB.LOADCLOBFROMFILE or DBMS_XSLPROCESSOR.READ2CLOB to load
CLOB or NCLOB data from external files.
Action: Reload the CLOB/NCLOBdata with the correct csid specified for the
external file.