Hi all,
Can someone please help me in adding a foreign key constraint to a table. Below is the error message that I got whenever I tried to execute the ddl:

SVRMGR> ALTER TABLE change_1
2> ADD FOREIGN KEY (PKG_POOL_ID) REFERENCES OM_AO_PKG_POOL( PKG_POOL_ID);
ALTER TABLE change_1
*
ORA-00054: resource busy and acquire with NOWAIT specified

How do I get around this busy message.

Thanks,
Leonard905