dbms_dnfs and clone.pl

If you are using to use dbms_dnfs to clone your database as described in MOS note 1210656.1 or on Tim's Hall blog - Direct NFS (DNFS) Clonedb in Oracle Database 11g Release 2 (Patchset 11.2.0.2) and your database version is 11.2.0.3 there is one additional step which is not covered by clone.pl script and has to be done manually.

In 11.2.0.2 it was enough to run crtdb.sql and dbren.sql scripts generated by clone.pl but this is what happen when you will run dbren.sql on 11.2.0.3

SQL> !cat dbren.sql
declare
begin
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSAUX_FNO-2_22o1pnm0' , '/u01/clone/ora_data_CLONE2.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSTEM_FNO-1_20o1pnjq' , '/u01/clone/ora_data_CLONE3.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-UNDOTBS1_FNO-3_23o1pnmp' , '/u01/clone/ora_data_CLONE4.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-USERS_FNO-4_21o1pnkt' , '/u01/clone/ora_data_CLONE5.dbf');
end;
/
show errors;
alter database open resetlogs;
drop tablespace TEMP;
create temporary tablespace TEMP;

SQL> begin
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSAUX_FNO-2_22o1pnm0' , '/u01/clone/ora_data_CLONE2.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSTEM_FNO-1_20o1pnjq' , '/u01/clone/ora_data_CLONE3.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-UNDOTBS1_FNO-3_23o1pnmp' , '/u01/clone/ora_data_CLONE4.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-USERS_FNO-4_21o1pnkt' , '/u01/clone/ora_data_CLONE5.dbf');
end;
  7  /
begin
*
ERROR at line 1:
ORA-01511: error in renaming log/data files
ORA-01141: error renaming data file 2 - new file '/u01/clone/ora_data_CLONE2.dbf' not found
ORA-01110: data file 2: '/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSAUX_FNO-2_22o1pnm0'
ORA-17515: Creation of clonedb failed using snapshot file /u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSAUX_FNO-2_22o1pnm0
ORA-06512: at "SYS.X$DBMS_DNFS", line 10
ORA-06512: at line 2

After that operation I found following errors in alert log

Fri Mar 29 13:31:20 2013
ERROR: clonedb parameter not set. Make sure clonedb=TRUE is set
Fri Mar 29 13:31:20 2013
Signalling error 1152 for datafile 1!
Signalling error 1152 for datafile 2!
Signalling error 1152 for datafile 4!
Checker run found 4 new persistent data failures

Let's check parameter 

SQL> show parameter clone

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
clonedb                              boolean     FALSE

I have changed that parameter in init.ora and restarted instance.

SQL> show parameter clone

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
clonedb                              boolean     TRUE

SQL> begin
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSAUX_FNO-2_22o1pnm0' , '/u01/clone/ora_data_CLONE2.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-SYSTEM_FNO-1_20o1pnjq' , '/u01/clone/ora_data_CLONE3.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-UNDOTBS1_FNO-3_23o1pnmp' , '/u01/clone/ora_data_CLONE4.dbf');
dbms_dnfs.clonedb_renamefile('/u01/app/oracle/backup/data_D-TESTSE_I-4169104998_TS-USERS_FNO-4_21o1pnkt' , '/u01/clone/ora_data_CLONE5.dbf');
end;
  7  /

PL/SQL procedure successfully completed.

Now it is working again so time to come back to other tests with cloning.

regards,
Marcin

Next OakTable 2012 video is online

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This time Alex Gorbachev presentation about ASM failures - next videos on the way.

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