Reference: Extensibility Types - System Defined Constants and System Defined Types

+-------------+--------------+----------------------+------+-----------+ |COLL_TYPE |ELEM_TYPE_NAME|TYPE_NAME |LENGTH|UPPER_BOUND| +-------------+--------------+----------------------+------+-----------+ |TABLE |NUMBER |KU$_OBJNUMSET |{null}| {null}| |TABLE |NUMBER |KU$_XMLCOLSET_T |{null}| {null}| |TABLE |NUMBER |ORA_MINING_NUMBER_NT |{null}| {null}| |TABLE |VARCHAR2 |DBMS_AW$_COLUMNLIST_T | 100| {null}| |TABLE |VARCHAR2 |DBMS_DEBUG_VC2COLL | 1000| {null}| |TABLE |VARCHAR2 |HSBLKNAMLST | 30| {null}| |TABLE |VARCHAR2 |KU$_VCNT | 4000| {null}| |TABLE |VARCHAR2 |ORA_MINING_VARCHAR2_NT| 4000| {null}| |VARYING ARRAY|NUMBER |AWRRPT_NUM_ARY |{null}| 30| |VARYING ARRAY|NUMBER |JDM_NUM_VALS |{null}| 999| |VARYING ARRAY|NUMBER |ODCIGRANULELIST |{null}| 65535| |VARYING ARRAY|NUMBER |ODCINUMBERLIST |{null}| 32767| |VARYING ARRAY|NUMBER |SQL_OBJECTS |{null}| 2000| |VARYING ARRAY|NUMBER |TABLESPACE_LIST |{null}| 64000| |VARYING ARRAY|VARCHAR2 |AQ$_JMS_NAMEARRAY | 200| 1024| |VARYING ARRAY|VARCHAR2 |AQ$_MIDARRAY | 32| 1024| |VARYING ARRAY|VARCHAR2 |AWRRPT_VCH_ARY | 80| 30| |VARYING ARRAY|VARCHAR2 |DBMSOUTPUT_LINESARRAY | 32767| 2147483647| |VARYING ARRAY|VARCHAR2 |DBMS_XS_ROLELIST | 1024| 4096| |VARYING ARRAY|VARCHAR2 |FLASHBACKTBLIST | 30| 100| |VARYING ARRAY|VARCHAR2 |HSBLKVALARY | 4000| 250| |VARYING ARRAY|VARCHAR2 |JDM_ATTR_NAMES | 60| 999| |VARYING ARRAY|VARCHAR2 |JDM_STR_VALS | 4000| 999| |VARYING ARRAY|VARCHAR2 |KU$_DROPCOLLIST | 4000| 1000| |VARYING ARRAY|VARCHAR2 |KUPC$_LOBPIECES | 4000| 4000| |VARYING ARRAY|VARCHAR2 |ODCIRIDLIST | 5072| 32767| |VARYING ARRAY|VARCHAR2 |ODCIVARCHAR2LIST | 4000| 32767| |VARYING ARRAY|VARCHAR2 |RE$NAME_ARRAY | 30| 1024| |VARYING ARRAY|VARCHAR2 |RE$RULE_LIST | 65| 1024| |VARYING ARRAY|VARCHAR2 |SQLPROF_ATTR | 500| 2000| |VARYING ARRAY|VARCHAR2 |TXNAME_ARRAY | 256| 100| +-------------+--------------+----------------------+------+-----------+