Clone wars

From: Mladen Gogala <gogala.mladen_at_gmail.com>
Date: Fri, 12 Dec 2008 12:11:29 +0100
Message-ID: <ghtgt2$6hn$1@news.motzarella.org>

In oracle11g, cloning databases just got easier. MUCH easier. The "duplicate database" command now has an option "from active database" which will make a copy of the live database. I tested it on a small DB and it worked flawlessly. Of course, that is not a good test if your db to clone is a multi-TB RAC database but it's all I can do for now. Here is the output. Of course, you need 11g for that.

[oracle_at_dibidus2 admin]$ rman

Recovery Manager: Release 11.1.0.7.0 - Production on Fri Dec 12 11:29:33 2008

RMAN> connect auxiliary sys/qwertz_at_stby11

connected to auxiliary database: TEST22 (not mounted)

RMAN> connect target sys/qwertz_at_test11

connected to target database: TEST11 (DBID=3378754816)

RMAN> duplicate target database to test22 from active database;

Starting Duplicate Db at 12-DEC-08
using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=153 device type=DISK allocated channel: ORA_AUX_DISK_2
channel ORA_AUX_DISK_2: SID=152 device type=DISK

contents of Memory Script:
{

   set newname for clone datafile  1 to new;
   set newname for clone datafile  2 to new;
   set newname for clone datafile  3 to new;
   set newname for clone datafile  4 to new;
   set newname for clone datafile  5 to new;

   backup as copy reuse
   datafile 1 auxiliary format new
   datafile 2 auxiliary format new
   datafile 3 auxiliary format new
   datafile 4 auxiliary format new
   datafile 5 auxiliary format new
   ;
   sql 'alter system archive log current'; }
executing Memory Script

executing command: SET NEWNAME

Starting backup at 12-DEC-08
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=114 device type=DISK allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=137 device type=DISK channel ORA_DISK_1: starting datafile copy input datafile file number=00004
name=/oradata/test11/data/TEST11/datafile/o1_mf_users_4mf46sr1_.dbf channel ORA_DISK_2: starting datafile copy input datafile file number=00002
name=/oradata/test11/data/TEST11/datafile/o1_mf_sysaux_4mf46srv_.dbf output file
name=/oradata/test11/data/STBY11/datafile/o1_mf_sysaux_0tk22if2_.dbf tag=TAG20081212T113042 RECID=0 STAMP=0
channel ORA_DISK_2: datafile copy complete, elapsed time: 00:05:20 channel ORA_DISK_2: starting datafile copy input datafile file number=00001
name=/oradata/test11/data/TEST11/datafile/o1_mf_system_4mf46ss2_.dbf output file
name=/oradata/test11/data/STBY11/datafile/o1_mf_system_0uk22ipf_.dbf tag=TAG20081212T113042 RECID=0 STAMP=0
channel ORA_DISK_2: datafile copy complete, elapsed time: 00:04:49 channel ORA_DISK_2: starting datafile copy input datafile file number=00003
name=/oradata/test11/data/TEST11/datafile/o1_mf_undotbs1_4mf46stp_.dbf output file
name=/oradata/test11/data/STBY11/datafile/o1_mf_undotbs1_0vk22j33_.dbf tag=TAG20081212T113042 RECID=0 STAMP=0
channel ORA_DISK_2: datafile copy complete, elapsed time: 00:09:17 channel ORA_DISK_2: starting datafile copy input datafile file number=00005
name=/oradata/test11/data/TEST11/datafile/o1_mf_test_4mf46stx_.dbf output file
name=/oradata/test11/data/STBY11/datafile/o1_mf_test_10k22jl2_.dbf tag=TAG20081212T113042 RECID=0 STAMP=0
channel ORA_DISK_2: datafile copy complete, elapsed time: 00:04:36 output file
name=/oradata/test11/data/STBY11/datafile/o1_mf_users_0sk22if2_.dbf tag=TAG20081212T113042 RECID=0 STAMP=0
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:28:57 Finished backup at 12-DEC-08

sql statement: alter system archive log current sql statement: CREATE CONTROLFILE REUSE SET DATABASE "TEST22" RESETLOGS ARCHIVELOG

  MAXLOGFILES     16
  MAXLOGMEMBERS      3
  MAXDATAFILES      100
  MAXINSTANCES     8
  MAXLOGHISTORY     2096

LOGFILE
  GROUP 1 SIZE 512 M ,
  GROUP 2 SIZE 512 M ,
  GROUP 3 SIZE 512 M
DATAFILE
  '/oradata/test11/data/STBY11/datafile/o1_mf_system_0uk22ipf_.dbf' CHARACTER SET AL32UTF8 contents of Memory Script:
{

backup as copy reuse
archivelog like "/oradata/test11/arch/1_475_672930799.dbf" auxiliary format
"/oradata/test11/arch/1_475_672930799.dbf" archivelog like
"/oradata/test11/arch/1_476_672930799.dbf" auxiliary format
"/oradata/test11/arch/1_476_672930799.dbf" archivelog like
"/oradata/test11/arch/1_477_672930799.dbf" auxiliary format
"/oradata/test11/arch/1_477_672930799.dbf" archivelog like
"/oradata/test11/arch/1_478_672930799.dbf" auxiliary format
"/oradata/test11/arch/1_478_672930799.dbf" ;

   catalog clone archivelog  "/oradata/test11/arch/1_475_672930799.dbf";
   catalog clone archivelog  "/oradata/test11/arch/1_476_672930799.dbf";
   catalog clone archivelog  "/oradata/test11/arch/1_477_672930799.dbf";
   catalog clone archivelog  "/oradata/test11/arch/1_478_672930799.dbf";

switch clone datafile all;
}
executing Memory Script

Starting backup at 12-DEC-08
using channel ORA_DISK_1
using channel ORA_DISK_2
channel ORA_DISK_1: starting archived log copy input archived log thread=1 sequence=475 RECID=2109 STAMP=673270770 channel ORA_DISK_2: starting archived log copy input archived log thread=1 sequence=476 RECID=2110 STAMP=673271370 output file name=/oradata/test11/arch/1_475_672930799.dbf RECID=0 STAMP=0 channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting archived log copy input archived log thread=1 sequence=477 RECID=2111 STAMP=673271969 output file name=/oradata/test11/arch/1_476_672930799.dbf RECID=0 STAMP=0 channel ORA_DISK_2: archived log copy complete, elapsed time: 00:00:01 channel ORA_DISK_2: starting archived log copy input archived log thread=1 sequence=478 RECID=2112 STAMP=673271980 output file name=/oradata/test11/arch/1_477_672930799.dbf RECID=0 STAMP=0 channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:00 output file name=/oradata/test11/arch/1_478_672930799.dbf RECID=0 STAMP=0 channel ORA_DISK_2: archived log copy complete, elapsed time: 00:00:01 Finished backup at 12-DEC-08

cataloged archived log
archived log file name=/oradata/test11/arch/1_475_672930799.dbf RECID=1 STAMP=673271998 cataloged archived log
archived log file name=/oradata/test11/arch/1_476_672930799.dbf RECID=2 STAMP=673271998 cataloged archived log
archived log file name=/oradata/test11/arch/1_477_672930799.dbf RECID=3 STAMP=673271998 cataloged archived log
archived log file name=/oradata/test11/arch/1_478_672930799.dbf RECID=4 STAMP=673271998 datafile 2 switched to datafile copy
input datafile copy RECID=1 STAMP=673271998 file name=/oradata/test11/data/STBY11/datafile/o1_mf_sysaux_0tk22if2_.dbf datafile 3 switched to datafile copy
input datafile copy RECID=2 STAMP=673271998 file name=/oradata/test11/data/STBY11/datafile/o1_mf_undotbs1_0vk22j33_.dbf datafile 4 switched to datafile copy
input datafile copy RECID=3 STAMP=673271998 file name=/oradata/test11/data/STBY11/datafile/o1_mf_users_0sk22if2_.dbf datafile 5 switched to datafile copy
input datafile copy RECID=4 STAMP=673271998 file name=/oradata/test11/data/STBY11/datafile/o1_mf_test_10k22jl2_.dbf

contents of Memory Script:
{

   set until scn 4691379;
   recover
   clone database
    delete archivelog
   ;
}
executing Memory Script

executing command: SET until clause

Starting recover at 12-DEC-08
using channel ORA_AUX_DISK_1
using channel ORA_AUX_DISK_2

starting media recovery

archived log for thread 1 with sequence 475 is already on disk as file /oradata/test11/arch/1_475_672930799.dbf archived log for thread 1 with sequence 476 is already on disk as file /oradata/test11/arch/1_476_672930799.dbf archived log for thread 1 with sequence 477 is already on disk as file /oradata/test11/arch/1_477_672930799.dbf archived log for thread 1 with sequence 478 is already on disk as file /oradata/test11/arch/1_478_672930799.dbf archived log file name=/oradata/test11/arch/1_475_672930799.dbf thread=1 sequence=475
archived log file name=/oradata/test11/arch/1_476_672930799.dbf thread=1 sequence=476
archived log file name=/oradata/test11/arch/1_477_672930799.dbf thread=1 sequence=477
archived log file name=/oradata/test11/arch/1_478_672930799.dbf thread=1 sequence=478
media recovery complete, elapsed time: 00:00:02 Finished recover at 12-DEC-08

contents of Memory Script:
{

shutdown clone immediate;
startup clone nomount ;
}
executing Memory Script

database dismounted
Oracle instance shut down

connected to auxiliary database (not started) Oracle instance started

Total System Global Area 481259520 bytes

Fixed Size                     1314212 bytes
Variable Size                377487964 bytes
Database Buffers              96468992 bytes
Redo Buffers                   5988352 bytes

sql statement: CREATE CONTROLFILE REUSE SET DATABASE "TEST22" RESETLOGS ARCHIVELOG

  MAXLOGFILES     16
  MAXLOGMEMBERS      3
  MAXDATAFILES      100
  MAXINSTANCES     8
  MAXLOGHISTORY     2096

set newname for clone tempfile 1 to new; switch clone tempfile all;
catalog clone
datafilecopy "/oradata/test11/data/STBY11/datafile/o1_mf_sysaux_0tk22if2_.dbf";

catalog clone
datafilecopy "/oradata/test11/data/STBY11/datafile/o1_mf_undotbs1_0vk22j33_.dbf";

catalog clone
datafilecopy "/oradata/test11/data/STBY11/datafile/o1_mf_users_0sk22if2_.dbf";

catalog clone
datafilecopy "/oradata/test11/data/STBY11/datafile/o1_mf_test_10k22jl2_.dbf";

switch clone datafile all;
}
executing Memory Script

executing command: SET NEWNAME

renamed tempfile 1
to /oradata/test11/data/STBY11/datafile/o1_mf_temp_%u_.tmp in control file

cataloged datafile copy
datafile copy file
name=/oradata/test11/data/STBY11/datafile/o1_mf_sysaux_0tk22if2_.dbf RECID=1 STAMP=673272031 cataloged datafile copy
datafile copy file
name=/oradata/test11/data/STBY11/datafile/o1_mf_undotbs1_0vk22j33_.dbf RECID=2 STAMP=673272033 cataloged datafile copy
datafile copy file
name=/oradata/test11/data/STBY11/datafile/o1_mf_users_0sk22if2_.dbf RECID=3 STAMP=673272035 cataloged datafile copy
datafile copy file
name=/oradata/test11/data/STBY11/datafile/o1_mf_test_10k22jl2_.dbf RECID=4 STAMP=673272037 datafile 2 switched to datafile copy
input datafile copy RECID=1 STAMP=673272031 file name=/oradata/test11/data/STBY11/datafile/o1_mf_sysaux_0tk22if2_.dbf datafile 3 switched to datafile copy
input datafile copy RECID=2 STAMP=673272033 file name=/oradata/test11/data/STBY11/datafile/o1_mf_undotbs1_0vk22j33_.dbf datafile 4 switched to datafile copy
input datafile copy RECID=3 STAMP=673272035 file name=/oradata/test11/data/STBY11/datafile/o1_mf_users_0sk22if2_.dbf datafile 5 switched to datafile copy
input datafile copy RECID=4 STAMP=673272037 file name=/oradata/test11/data/STBY11/datafile/o1_mf_test_10k22jl2_.dbf

contents of Memory Script:
{

Alter clone database open resetlogs;
}
executing Memory Script

database opened Finished Duplicate Db at 12-DEC-08

RMAN>

-- 
http://mgogala.freehostia.com

Received on Fri Dec 12 2008 - 05:11:29 CST

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