We recently had an issue with a client while cloning a huge database. The result was that we had to restore the whole database as the post-clone corrupted the existing database. Pain! It took another fourteen hours to restore.

This may help you to troubleshoot the issue.

/sbox/oracle/product/920/appsutil/clone/bin$ perl adcfgclone.pl dbTier

Errors in the Alert.log after Clone failure

Completed: ALTER DATABASE ENABLE PUBLIC THREAD 3Shutting down instance: further logons disabled
Shutting down instance (normal)License high water mark = 5Mon Apr 14 14:49:00 2008

Errors in file /sbox/oracle/product/920/admin/Prod/bdump/sbox1_j001_2453612.trc:

ORA-12012: error on auto execute of job 16303
ORA-12008: error in materialized view refresh path
ORA-28112: failed to execute policy function
ORA-06512: at “SYS.DBMS_SNAPSHOT”, line 820
ORA-06512: at “SYS.DBMS_SNAPSHOT”, line 877
ORA-06512: at “SYS.DBMS_IREFRESH”, line 683
ORA-06512: at “SYS.DBMS_REFRESH”, line 195ORA-06512: at line 1~