ORA-06546: DDL statement is executed in an illegal context

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ORA-06546:DDL statement is executed in an illegal context
Cause: DDL statement is executeddynamically in illegal PL/SQL context.
- Dynamic OPEN cursor for a DDL in PL/SQL
- Bind variable's used in USING clause to EXECUTE IMMEDIATE a DDL
- Define variable's used in INTO clause to EXECUTE IMMEDIATE a DDL
Action: Use EXECUTE IMMEDIATE without USINGand INTO clauses to execute
the DDL statement