Hi Oracle Gurus,
I am getting this error when i am trying to chage the datatype from varchar2 to nvarchar2.
Can anyone help me out in this...its very urgent....

SQL> ALTER TABLE S_ACCNTRT_LOAD MODIFY (COMMENTS NVARCHAR2(250));
ALTER TABLE S_ACCNTRT_LOAD MODIFY (COMMENTS NVARCHAR2(250))
*
ERROR at line 1:
ORA-25207: enqueue failed, queue . is disabled from enqueueing

I checked the error message in oracle document. Document says to enable the enqueing using administration option. Can anyone please let me know how to enable the enqueing option.


Thanks in advance
Mahesh BK