Experiments in Geekery

[oracle@target dbs]$ rman auxiliary sys@dup target sys@source [...] RMAN> duplicate target database to DUP from active database db_file_name_convert '/u2/data/PROD','/u2/data/DUP' LOG_FILE_NAME_CONVERT '/u2/data/PROD/onlinelog','/u2/data/DUP' nofilenamecheck; Starting Duplicate Db at 25-FEB-15 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=171 device type=DISK RMAN-00571: =================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ======= RMAN-00571: =================================================== RMAN-03002: failure of Duplicate Db command at 02/25/2015 16:04:44 RMAN-05501: aborting duplication of target database RMAN-05531: a mounted database cannot be duplicated while datafiles are fuzzy Using Oracle 11.2.0.3 (anything below 11.2.0.3.6), this is the error if an attempt is made to duplicate from an activ...

During an upgrade of an 11.2.0.3 DB to 11.2.0.4 using DBUA, this error popped up: Errors - Oracle Workspace Manager . ORA-00942: table or view does not exist . ORA-06512: at "WMSYS.OWM_MIG_PKG", line 1575 . ORA-06512: at "WMSYS.OWM_MIG_PKG", line 1592 . ORA-06512: at line 1 . VALID 11.2.0.1.0 00:00:39 This error is referenced in MOS note  1051991.1 and can be ignored: If DBA_REGISTRY shows the status of (in this case) Workspace Manager is VALID, then this error is safe to ignore. Click Ignore and the upgrade will continue.