Oracle PL/SQL/System Packages/DBMS METADATA

dbms_metadata.get_ddl( "TABLE", "TABLENAME" )

 
SQL>
SQL> create table t
  2  ( x int primary key,
  3    y date,
  4    z clob
  5  )
  6  /
Table created.
SQL> select dbms_metadata.get_ddl( "TABLE", "T" ) from dual;
DBMS_METADATA.GET_DDL("TABLE","T")
--------------------------------------------------------------------------------
  CREATE TABLE "sqle"."T"
   (    "X" NUMBER(*,0),
        "Y" DATE,
        "Z" CLOB,
         P

SQL>
SQL>
SQL>
SQL> drop table t;
Table dropped.
SQL>

Save value returned from DBMS_METADATA.GET_XML to xmltype

 
SQL> create table myTable
  2  (myID  number primary key,
  3  ddl     xmltype );
Table created.
SQL>
SQL> create index all_idx on myTable(extractvalue(ddl,"/ROWSET/ROW/TABLE_T/SCHEMA_OBJ/NAME"))
  2
SQL> insert into myTable values (1,xmltype((SELECT DBMS_METADATA.GET_XML("TABLE","emp","sqle")FROM DUAL)))
  2  select index_name, index_type from user_indexes
  3  where table_name = "myTable"
  4
SQL> drop table myTable;
Table dropped.
SQL>