删除goldengate用户：
SQL> drop user goldengate cascade; 
drop user goldengate cascade
* 
ERROR at line 1: 
ORA-00604: error occurred at recursive SQL level 2 
ORA-20782: GoldenGate DDL Replication Error: Code :ORA-20782: Cannot DROP
object used in GoldenGate replication while trigger is enabled. Consult 
GoldenGate documentation and/or call GoldenGate Technical Support if you wish 
to do so., error stack: ORA-06512: at line 226 
ORA-06512: at line 951

SQL> sqlplus / as sysdba;
SQL> @/cwogg/oggbj/ddl_disable.sql
或者
SQL> drop trigger ggs_ddl_trigger_before;
SQL> drop user goldengate cascade;
drop user goldengate cascade
* 
ERROR at line 1: 
ORA-00604: error occurred at recursive SQL level 1 
ORA-14452: attempt to create, alter or drop an index on temporary table already in use
SQL> conn goldengate/goldengate;
SQL> select table_name from tabs;

TABLE_NAME
------------------------------
GGS_TEMP_COLS
GGS_TEMP_UK
GGS_STICK
SQL> select sid,serial# from v$session where sid in (select sid  from v$lock where id1 = (select object_id  from user_objects where

object_name = upper('GGS_STICK')));
       SID    SERIAL#
---------- ----------
        10         33
        14         21
        15         17
        16          7
        19          7
        20          7
        22         15
        23          9
        27          5
        38          5
       778         15

       SID    SERIAL#
---------- ----------
       783         13
       784          7
       785         31
       786          7
       787          5
       788          5
       789          5

已选择18行。
SQL> alter system kill session '10,33';
......
SQL> alter system kill session '789,5';
SQL> conn / as sysdba;
已连接。
SQL> drop user goldengate cascade;

用户已删除。

参考：http://hunt1574.blog.51cto.com/1390776/1031012