Dear all, I want to create Data guard physical standby but some of archive log are deleted from primary so my active database duplication failing. I tried to restore from backup but I can't.... log from duplication -------------------------------------------------------------------- unable to find archived log archived log thread=2 sequence=4279 Oracle Error: ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01152: file 1 was not restored from a sufficiently old backup ORA-01110: data file 1: '+DATA/tosprddgd/datafile/system.312.838742663' RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of Duplicate Db command at 02/06/2014 13:09:09 RMAN-05501: aborting duplication of target database RMAN-03015: error occurred in stored script Memory Script RMAN-06054: media recovery requesting unknown archived log for thread 2 with sequence 4279 and starting SCN of 216548454 -------------------------------------------------------------------------- is there any workaround , please help. thanks *-----------------* *Tiran* *Best RegardsStay in touch...*