Oracle Cloud (DBaaS): Migrating Databases to Oracle Cloud Using RMAN Backup
https://community.oracle.com/blogs/Sir.DBaaSJoelPerez/2017/09/25/oracle-cloud-dbaas-migrating-databases-to-oracle-cloud-using-rman-backup
Now, Let's continue with this one:
The method to be worked in this article is based on the tradicional backup/restore/recover database. It has been one of the methods most effective to migrate/move an Oracle Database from one host to another host or even in the same host. The advantages of this method are several, one of them is that the downtime normally is almost zero, depending on the archive redo log generation of the "On-prem" or source database.
When to use this method?
No Cross-EndianNo structural changesNo upgrade to a new versionSource version 11.2.0.4, 12.1.0.2, 12.2.0.1The objective of this article is not highlight the typical advantages of the method, since is very well known, the objective of this article is to realise how we can use it to move a database to Cloud.
Please use following steps to migrate on-premise database to Oracle cloud.
Backup source Database
[oracle@PREMISE premise]$rman target /
Recovery Manager: Release 11.2.0.4.0 - Production on Tue Aug 8 04:34:16 2017
Copyright (c) 1982, 2011, Oracle and/or its affiliates.All rights reserved.
connected to target database: ORCL (DBID=1478563967)
RMAN>run
{
allocate channel c1 type DISK FORMAT '/u01/bkp/premise/%d_FULL_C_DISK_%T_%s_%p';
allocate channel c2 type DISK FORMAT '/u01/bkp/premise/%d_FULL_C_DISK_%T_%s_%p';
allocate channel c3 type DISK FORMAT '/u01/bkp/premise/%d_FULL_C_DISK_%T_%s_%p';
allocate channel c4 type DISK FORMAT '/u01/bkp/premise/%d_FULL_C_DISK_%T_%s_%p';
BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS ARCHIVELOG;
backup spfile format '/u01/bkp/premise/spfile_%d_%s_%T_dbid%I.rman';
backup current controlfile format '/u01/bkp/premise/Controlfile_%d_%T_dbid%I_s%s_p%p';
release channel c1;
release channel c2;
release channel c3;
release channel c4;
}
using target database control file instead of recovery catalog
allocated channel: c1
channel c1: SID=146 device type=DISK
allocated channel: c2
channel c2: SID=33 device type=DISK
allocated channel: c3
channel c3: SID=150 device type=DISK
allocated channel: c4
channel c4: SID=17 device type=DISK
Starting backup at 08-AUG-17
current log archived
skipping archived logs of thread 1 from sequence 7 to 8; already backed up
channel c1: starting compressed archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=9 RECID=9 STAMP=951453273
channel c1: starting piece 1 at 08-AUG-17
channel c1: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_9_1 tag=TAG20170808T043433 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-AUG-17
Starting backup at 08-AUG-17
channel c1: starting compressed full datafile backup set
channel c1: specifying datafile(s) in backup set
input datafile file number=00001 name=/u02/app/oracle/oradata/ORCL/system01.dbf
channel c1: starting piece 1 at 08-AUG-17
channel c2: starting compressed full datafile backup set
channel c2: specifying datafile(s) in backup set
input datafile file number=00002 name=/u02/app/oracle/oradata/ORCL/sysaux01.dbf
input datafile file number=00004 name=/u02/app/oracle/oradata/ORCL/users01.dbf
channel c2: starting piece 1 at 08-AUG-17
channel c3: starting compressed full datafile backup set
channel c3: specifying datafile(s) in backup set
input datafile file number=00005 name=/u02/app/oracle/oradata/ORCL/example01.dbf
input datafile file number=00003 name=/u02/app/oracle/oradata/ORCL/undotbs01.dbf
channel c3: starting piece 1 at 08-AUG-17
channel c3: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_12_1 tag=TAG20170808T043434 comment=NONE
channel c3: backup set complete, elapsed time: 00:00:07
channel c1: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_10_1 tag=TAG20170808T043434 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:25
channel c2: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_11_1 tag=TAG20170808T043434 comment=NONE
channel c2: backup set complete, elapsed time: 00:00:25
Finished backup at 08-AUG-17
Starting backup at 08-AUG-17
current log archived
channel c1: starting compressed archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=10 RECID=10 STAMP=951453301
channel c1: starting piece 1 at 08-AUG-17
channel c1: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_13_1 tag=TAG20170808T043501 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-AUG-17
Starting backup at 08-AUG-17
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
including current SPFILE in backup set
channel c1: starting piece 1 at 08-AUG-17
channel c1: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/spfile_ORCL_14_20170808_dbid1478563967.rman tag=TAG20170808T043502 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-AUG-17
Starting backup at 08-AUG-17
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
including current control file in backup set
channel c1: starting piece 1 at 08-AUG-17
channel c1: finished piece 1 at 08-AUG-17
piece handle=/u01/bkp/premise/Controlfile_ORCL_20170808_dbid1478563967_s15_p1 tag=TAG20170808T043503 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-AUG-17
Starting Control File and SPFILE Autobackup at 08-AUG-17
piece handle=/u03/app/oracle/fast_recovery_area/ORCL/autobackup/2017_08_08/o1_mf_s_951453306_drlhvton_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 08-AUG-17
released channel: c1
released channel: c2
released channel: c3
released channel: c4
RMAN>
RMAN> exit
Recovery Manager complete.
[oracle@PREMISE premise]$
2. Check the backup sets
[oracle@PREMISE premise]$cd /u01/bkp/premise
[oracle@PREMISE premise]$ls
Controlfile_ORCL_20170808_dbid1478563967_s15_p1ORCL_FULL_C_DISK_20170808_11_1ORCL_FULL_C_DISK_20170808_13_1spfile_ORCL_14_20170808_dbid1478563967.rman
ORCL_FULL_C_DISK_20170808_10_1ORCL_FULL_C_DISK_20170808_12_1ORCL_FULL_C_DISK_20170808_9_1
[oracle@PREMISE premise]$
Create the new Cloud Database Service
a) Login to your Oracle cloud services account, go to the "Oracle Database Cloud Service" page and create a new service.
•ForService Name,selectPREMISE.•From theService Levellist, selectOracle Database Cloud Service.•From theMetering Frequencylist, select whatever frequency is appropriate for your environment.•From theSoftware Releaselist, selectOracle Database 11g Release2.•From theSoftware Editionlist, selectEnterprise Edition.•From theDatabase Typelist, selectSingle Instance.Then clickNextto continue.
Figure1. Creating a new service (PREMISE)
b) In the Service Details screen, do the following:
•ForDB Name (SID), enterORCL.•Set an administrative password of your choice and confirm the password (this will be your sys password).•ForUsable Database Storage (GB), enter25.•From theCompute Shapelist, selectOC3 -1 OCPU, 7.5GB RAM(this is the bare minimum required).•ForSSH Public Key, enterrsa-key-20170111.pub.Then clickNextto continue.
Figure 2. Specifying the service details
c) Finally, review the configuration and clickCreateto create your cloud database.
Figure 3. Creating the cloud database instance
After a few minutes, the cloud database instance has been created successfully.
Figure 4. The cloud database has been created
d) Click the service name (PREMISE) to open the main page of the database.
Figure 5. Main page of the cloud database
Connect the Cloud Database
1. Open the instance of the PuTTY executable and connect to the machine using SSH public key.
Figure 6. Connecting to machine using PuTTY
Copy backup to Oracle Cloud compute Node
[oracle@Cloud ~]$mkdir –p /u01/app/premise/
[oracle@PREMISE ~]$scp -i rsa-key-20170111.ssh /u01/app/premise/* oracle@141.144.32.52:/u01/app/premise
2.Delete the dummy database of cloud
[oracle@Cloud ~]$sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Aug 8 04:37:45 2017
Copyright (c) 1982, 2013, Oracle.All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning and Real Application Testing options
SQL>shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL>startup mount exclusive restrict
ORACLE instance started.
Total System Global Area 2755870720 bytes
Fixed Size2256432 bytes
Variable Size637534672 bytes
Database Buffers2030043136 bytes
Redo Buffers86036480 bytes
Database mounted.
SQL>drop database;
Database dropped.
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning and Real Application Testing options
SQL>
Restore backup to Oracle Cloud Instance
[oracle@Cloud ~]$mkdir -p /u01/app/oracle/admin/ORCL/adump
[oracle@Cloud ~]$sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Aug 8 04:41:09 2017
Copyright (c) 1982, 2013, Oracle.All rights reserved.
Connected to an idle instance.
SQL>startup nomount;
ORACLE instance started.
Total System Global Area 2755870720 bytes
Fixed Size2256432 bytes
Variable Size637534672 bytes
Database Buffers2030043136 bytes
Redo Buffers86036480 bytes
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning and Real Application Testing options
[oracle@Cloud ~]$ps -ef|grep pmon
oracle2351810 04:41 ?00:00:00 ora_pmon_ORCL
oracle23649 188900 04:41 pts/000:00:00 grep pmon
2.Restore control file and mount database
[oracle@Cloud ~]$rman target /
Recovery Manager: Release 11.2.0.4.0 - Production on Tue Aug 8 04:42:34 2017
Copyright (c) 1982, 2011, Oracle and/or its affiliates.All rights reserved.
connected to target database: ORCL (not mounted)
RMAN>RESTORE CONTROLFILE from '/u01/bkp/premise/Controlfile_ORCL_20170808_dbid1478563967_s15_p1';
Starting restore at 08-AUG-17
using channel ORA_DISK_1
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u02/app/oracle/oradata/ORCL/control01.ctl
output file name=/u03/app/oracle/fast_recovery_area/ORCL/control02.ctl
Finished restore at 08-AUG-17
RMAN>
RMAN>alter database mount;
database mounted
released channel: ORA_DISK_1
RMAN>
3.Catalog backup if location is different
RMAN>catalog start with '/u01/bkp/premise/';
Starting implicit crosscheck backup at 08-AUG-17
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=134 device type=DISK
Crosschecked 14 objects
Finished implicit crosscheck backup at 08-AUG-17
Starting implicit crosscheck copy at 08-AUG-17
using channel ORA_DISK_1
Finished implicit crosscheck copy at 08-AUG-17
searching for all files in the recovery area
cataloging files...
cataloging done
List of Cataloged Files
=======================
File Name: /u03/app/oracle/fast_recovery_area/ORCL/autobackup/2017_08_08/o1_mf_s_951453306_drlhvton_.bkp
searching for all files that match the pattern /u01/bkp/premise/
List of Files Unknown to the Database
=====================================
File Name: /u01/bkp/premise/Controlfile_ORCL_20170808_dbid1478563967_s15_p1
Do you really want to catalog the above files (enter YES or NO)? y
cataloging files...
cataloging done
List of Cataloged Files
=======================
File Name: /u01/bkp/premise/Controlfile_ORCL_20170808_dbid1478563967_s15_p1
RMAN>
4. Restore Database
RMAN>RUN {
SET NEWNAME FOR DATABASE TO '/u02/app/oracle/oradata/ORCL/%U';
RESTORE DATABASE;
SWITCH DATAFILE ALL;
}
executing command: SET NEWNAME
Starting restore at 08-AUG-17
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00003 to /u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-UNDOTBS1_FNO-3
channel ORA_DISK_1: restoring datafile 00005 to /u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-EXAMPLE_FNO-5
channel ORA_DISK_1: reading from backup piece /u01/bkp/premise/ORCL_FULL_C_DISK_20170808_12_1
channel ORA_DISK_1: piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_12_1 tag=TAG20170808T043434
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00002 to /u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-SYSAUX_FNO-2
channel ORA_DISK_1: restoring datafile 00004 to /u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-USERS_FNO-4
channel ORA_DISK_1: reading from backup piece /u01/bkp/premise/ORCL_FULL_C_DISK_20170808_11_1
channel ORA_DISK_1: piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_11_1 tag=TAG20170808T043434
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:25
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-SYSTEM_FNO-1
channel ORA_DISK_1: reading from backup piece /u01/bkp/premise/ORCL_FULL_C_DISK_20170808_10_1
channel ORA_DISK_1: piece handle=/u01/bkp/premise/ORCL_FULL_C_DISK_20170808_10_1 tag=TAG20170808T043434
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:35
Finished restore at 08-AUG-17
datafile 1 switched to datafile copy
input datafile copy RECID=6 STAMP=951454265 file name=/u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-SYSTEM_FNO-1
datafile 2 switched to datafile copy
input datafile copy RECID=7 STAMP=951454266 file name=/u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-SYSAUX_FNO-2
datafile 3 switched to datafile copy
input datafile copy RECID=8 STAMP=951454266 file name=/u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-UNDOTBS1_FNO-3
datafile 4 switched to datafile copy
input datafile copy RECID=9 STAMP=951454266 file name=/u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-USERS_FNO-4
datafile 5 switched to datafile copy
input datafile copy RECID=10 STAMP=951454266 file name=/u02/app/oracle/oradata/ORCL/data_D-ORCL_TS-EXAMPLE_FNO-5
RMAN>
5. Recover database and open it with resetlogs
RMAN>recover database;
Starting recover at 08-AUG-17
using channel ORA_DISK_1
starting media recovery
archived log for thread 1 with sequence 10 is already on disk as file /u03/app/oracle/fast_recovery_area/ORCL/archivelog/2017_08_08/o1_mf_1_10_drlhvnw3_.arc
archived log file name=/u03/app/oracle/fast_recovery_area/ORCL/archivelog/2017_08_08/o1_mf_1_10_drlhvnw3_.arc thread=1 sequence=10
unable to find archived log
archived log thread=1 sequence=11
RMAN-03002: failure of recover command at 08/08/2017 05:01:05
RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 11 and starting SCN of 2519715
RMAN>alter database open resetlogs;
database opened
RMAN>exit
Recovery Manager complete.
[oracle@Cloud ~]$
6. Check the database instance
[oracle@Cloud ~]$ps -ef | grep smon
oracle945 188900 05:01 pts/000:00:00 grep smon
oracle3154510 04:57 ?00:00:00 ora_smon_ORCL
[oracle@Cloud ~]$sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Aug 8 05:02:14 2017
Copyright (c) 1982, 2013, Oracle.All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning and Real Application Testing options
SQL>select name,open_mode from v$database;
NAMEOPEN_MODE
--------- --------------------
ORCLREAD WRITE
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