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OWNER OBJECT_NAME OBJECT_TYPE
------------------------------ -------------------- -------------------
SYS SQL_PLAN_TABLE_TYPE TYPE
PUBLIC SQL_PLAN_TABLE_TYPE SYNONYM
SYS PLAN_TABLE$ TABLE
PUBLIC PLAN_TABLE SYNONYM
EXFSYS EXF$PLAN_TABLE TABLE
SQL> select * from dba_synonyms where SYNONYM_NAME like '%PLAN_TABLE%';
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