RMAN Recovery Case - Lost All Control File Recovery

xiaoxiao2021-03-06  71

1.1. Lost all control file recovery

1.1.1. Simulated control file loss

RMAN> Shutdown Abort;

Oracle routines have been closed

Rman> Host;

Microsoft Windows XP [Version 5.1.2600]

(C) Copyright 1985-2001 Microsoft Corp.

C: /> Del D: /oracle92/test1/control*.ctl

C: /> DIR D: /ORACLE92/TEST1/Control*.ctl

The volume in the driver D has no label.

The serial number of the volume is 644D-03D9

D: / Oracle92 / Test1 directory

Can't find a document

C: /> EXIT

Host command is completed

Rman>

1.1.2. Set Oracle_SID

Rman> exit;

The recovery manager is complete.

C: />

C: /> set oracle_sid = TEST1

C: /> echo oracle_sid

Oracle_sid

C: />

1.1.3. Login RMAN

C: /> rman

Recovery Manager: Version

9.2.0

.1.0 - Production

CopyRight (C) 1995, 2002, Oracle Corporation. All Rights Reserved.

Rman> Connect Target Lunar / Lunar @ Test1

Target database (not started)

Rman> Connect Catalog RMAN / RMAN @ rman

Connect to the recovery directory database

Rman>

1.1.4. Set DBID in RMAN

Make RMAN to know which database needs to find SPFile

(The DBID must be set in the case of data closing)

Rman> set dbid = 910599446

Is executing a command: set dbid

Rman>

1.1.5. Start the database to the Nomount state

Rman> Startup Nomount;

Target database (not started)

Oracle routines have been started

System Global Region Total 101784276 bytes

Fixed size 453332 bytes

Variable size 75497472 bytes

Database buffers 25165824 bytes

Redo buffers 667648 bytes

Rman>

1.1.6. Recovery Control File

1.1.6.1. Use the recovery directory recovery

If you use the recovery directory, you can simply execute Restore ControlFile;

RMAN> Restore ControlFile;

Start Restore in 2007- October -04

Assigned channel: ORA_DISK_1

Channel ORA_DISK_1: SID = 13 DevType = Disk

Channel ORA_DISK_1: Restore Data File Backup Set

Channel ORA_DISK_1: Restore Control File

Output file name = d: /oracle92/test1/control01.ctl

Channel ORA_DISK_1: Restored Backup Segment 1

Segment Handle = D: / RMANTEST / C-91059946-20041007-00 Tag = null params = null

Channel ORA_DISK_1: Restore completion

Copy the control file

Output file name = d: /oracle92/test1/control01.ctl

Output file name = d: /oracle92/test1/control02.ctl

Output file name = d: /oracle92/test1/control03.ctl Complete Restore in 2007- October -04

Rman>

1.1.6.2. Do not use the recovery directory recovery (recovered using the auto-backed up control file)

If you do not use the recovery directory, you can automatically back up the path to the path to restore the control file from the specified control file.

Rman> Run {

2> SET ControlFile Autobackup Format for Device Type Disk To

3> 'D: / rmantest /% f';

4> Restore ControlFile from Autobackup;

5>}

Execute the command: set controlfile autobackup format

Start Restore in 2007- October -04

Assigned channel: ORA_DISK_1

Channel ORA_DISK_1: SID = 13 DevType = Disk

Channel ORA_DISK_1: Look for automatic backup below: 20041007

Channel ORA_DISK_1: Auto Backups I have found: D: / RMANTEST / C-910599446-20041007-00

Channel ORA_DISK_1: Completed from the automatic backup recovery control file

Copy the control file

Output file name = d: /oracle92/test1/control01.ctl

Output file name = d: /oracle92/test1/control02.ctl

Output file name = d: /oracle92/test1/control03.ctl

Complete Restore in 2007- October -04

Rman> Host;

Microsoft Windows XP [Version 5.1.2600]

(C) Copyright 1985-2001 Microsoft Corp.

C: /> DIR D: /ORACLE92/TEST1/Control*.ctl

The volume in the driver D has no label.

The serial number of the volume is 644D-03D9

D: / Oracle92 / Test1 directory

2004-10-07 15:18 1,630,208 Control01.ctl

2004-10-07 15:18 1,630,208 Control02.ctl

2004-10-07 15:18 1,630,208 Control03.ctl

3 files 4,890,624 bytes

0 catalogs 10, 527, 322, 112 can be used bytes

C: /> EXIT

Host command is completed

Rman>

1.1.6.3. Drawing control file

1.1.6.3.1. Detained control file from the recovery directory

When the database is opened, the control file can be analyzed, as described below is to extract the control file from the recovery directory and save it to d: /test_ctl.ora.

Rman> restore controlfile to 'd: /test_ctl.ora';

Start Restore in 2007- October -04

Use channel ORA_DISK_1

Channel ORA_DISK_1: Restore Data File Backup Set

Channel ORA_DISK_1: Restore Control File

Output file name = D: /TEST_CTL.ORA

Channel ORA_DISK_1: Restored Backup Segment 1

Segment Handle = D: / RMANTEST / C-91059946-20041007-00 Tag = null params = null

Channel ORA_DISK_1: Restore completion

Complete Restore in 2007- October -04

Rman>

1.1.6.3.2. Detained control files from automatic backup control files

The following example is from the D: / Differential Control File to the D: /

Rman> Run {2> Set ControlFile AutoBackup Format for Device Type Disk to

3> 'D: / rmantest /% f';

4> Restore ControlFile to 'D: /Test_CTL.BAK' from Autobackup;

5>}

Execute the command: set controlfile autobackup format

Start Restore in 2007- October -04

Use channel ORA_DISK_1

Channel ORA_DISK_1: Look for automatic backup below: 20041007

Channel ORA_DISK_1: Auto Backups I have found: D: / RMANTEST / C-910599446-20041007-00

Channel ORA_DISK_1: Completed from the automatic backup recovery control file

Complete Restore in 2007- October -04

Rman>

1.1.7. Mount database

Rman> Alter Database Mount;

Database has been loaded

Rman>

1.1.8. Recovery Database

RMAN> Recover Database;

Start Recover in 2007- October -04

Use channel ORA_DISK_1

Recovery of the media

Archive log thread 1 Sequence 16 has been used as a file D: /oracle92/test1/redo03.log exists on disk

Archive log file name = d: /oracle92/test1/redo03.log thread = 1 sequence = 16

Completion of media recovery

Complete Recover in 2007- October -04

Rman>

1.1.9. Open resetlogs database

Rman> ALTER DATABASE OPEN RESETLOGS;

Database has been opened

New physicalization of the database registered in the recovery directory

Rosync that is starting all restored directories

Complete all RESYNC

Rman>

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