barcode formula for crystal reports DATABASE RECOVERY in Font

Maker Code 39 Extended in Font DATABASE RECOVERY

CHAPTER 16 DATABASE RECOVERY
Create Code 39 In None
Using Barcode creator for Font Control to generate, create ANSI/AIM Code 39 image in Font applications.
www.OnBarcode.com
Creating PDF 417 In None
Using Barcode creator for Font Control to generate, create PDF417 image in Font applications.
www.OnBarcode.com
Recover database; Sql "alter database open reset logs"; Release channel s1; Release channel s2; } Once you query the database and verify that you have recovered it to the previous point in time, you can open the database using the following command, which will undo all changes after the point in time you ve recovered to: RMAN> ALTER DATABASE OPEN RESETLOGS; The previous command will archive all online redo logs, reset the log sequence numbers, and give the online redo logs a new time stamp and SCN. You thus eliminate the possibility of corrupting your datafiles by mistakenly applying older redo logs. If you want to use a specific log sequence number instead of a point in time, you modify the script by replacing the SET UNTIL TIME line with the following: RMAN> SET UNTIL SEQUENCE 1234;
Data Matrix 2d Barcode Drawer In None
Using Barcode generation for Font Control to generate, create Data Matrix 2d barcode image in Font applications.
www.OnBarcode.com
Quick Response Code Creation In None
Using Barcode encoder for Font Control to generate, create QR-Code image in Font applications.
www.OnBarcode.com
WHAT IS RESETLOGS
Code 128B Creator In None
Using Barcode generation for Font Control to generate, create Code 128 Code Set B image in Font applications.
www.OnBarcode.com
UPC-A Supplement 5 Creator In None
Using Barcode creator for Font Control to generate, create UPC-A image in Font applications.
www.OnBarcode.com
Note that after you perform any kind of incomplete recovery, the logs are always reset. Essentially, the RESETLOGS option reinitializes the redo log files, erasing all the redo information they currently have, and resets the log sequence number to 1. To apply any archived redo logs to a datafile, the SCNs and time stamps in the database files have to match the SCNs and time stamps in the headers of the archived redo log files, and when you perform a RESETLOGS operation, the datafiles are stamped with new SCN and time stamp information, making it impossible for the older archived redo logs to be applied to them by mistake. The RESETLOGS option is used under these circumstances: When you use a backup control file to recover When you perform an incomplete recovery, rather than a complete recovery When you recover using a control file created with the RESETLOGS option If you were to do the incomplete recovery using an SCN, the SET UNTIL command would be modified as SET UNTIL SCN nnnn. If you were to use an archived log sequence number, the command would be SET UNTIL LOGSEQ=nnnn THREAD=nnnn, where LOGSEQ is the log you want to recover to.
Barcode Printer In None
Using Barcode drawer for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Royal Mail Barcode Generator In None
Using Barcode drawer for Font Control to generate, create RM4SCC image in Font applications.
www.OnBarcode.com
Here s a short script that shows how to perform incomplete recovery using RMAN, where you specify an SCN: RMAN> RUN { ALLOCATE CHANNEL ch1 TYPE sbt; RESTORE DATABASE; RECOVER DATABASE UNTIL SCN 1000; ALTER DATABASE OPEN RESETLOGS; }
Printing Code 3/9 In None
Using Barcode generator for Online Control to generate, create ANSI/AIM Code 39 image in Online applications.
www.OnBarcode.com
Recognize USS Code 39 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
# recovers through SCN 999
Encoding UPC Code In Java
Using Barcode encoder for BIRT Control to generate, create UPC-A Supplement 2 image in Eclipse BIRT applications.
www.OnBarcode.com
Barcode Printer In .NET
Using Barcode encoder for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
Recovery Through Current and Ancestor Database Incarnations
Data Matrix ECC200 Reader In Visual C#
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Read Code 3 Of 9 In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Anytime you use the OPEN RESETLOGS command, the incarnation of the database changes and a new incarnation begins. The previous incarnation is termed an ancestor incarnation, and the latest is the
PDF-417 2d Barcode Creator In Visual C#.NET
Using Barcode printer for .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
Recognize QR In .NET Framework
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
CHAPTER 16 DATABASE RECOVERY
Print Barcode In None
Using Barcode printer for Microsoft Excel Control to generate, create Barcode image in Microsoft Excel applications.
www.OnBarcode.com
Make Data Matrix 2d Barcode In Visual Studio .NET
Using Barcode printer for Reporting Service Control to generate, create Data Matrix 2d barcode image in Reporting Service applications.
www.OnBarcode.com
current incarnation. RMAN can recover through multiple incarnations of a database. For example, if you have backups from an older incarnation of the database, you can use them to recover your current database incarnation, but you must specify that the backups are coming from a previous incarnation. The Simplified Recovery Through Resetlogs feature lets you use archived redo logs from an earlier incarnation of the database. The default format for the LOG_ARCHIVE_FORMAT initialization parameter now includes a %r component, which stands for the RESETLOGS identifier. For example, on a UNIX/ Linux system, your archived redo logs will use the format log%t_%s_%r.arc. The variable t stands for the thread number, and the variable s is the log sequence number. The V$LOG_HISTORY view has two columns, RESETLOGS_CHANGE# and RESETLOGS_TIME, that indicate the database incarnation of the archived redo logs. The point-in-time recovery example in the previous section dealt with recovery using the current incarnation of the database. Let s look at incomplete database recovery using a parent incarnation of the database. Suppose you want to specify an SCN that isn t in the current incarnation, but is in an ancestor incarnation. There are two requirements for this type of a point-in-time recovery: You must reset the current incarnation of the database back to the incarnation to which your target SCN belongs. You must use the control file from the older incarnation that contains the target SCN. To perform point-in-time recovery to the older incarnation, use the following steps: 1. Find out the incarnation key for the incarnation that was current at the time you want to recover your database to. You can find it in the incarnation key column of the output of RMAN s LIST INCARNATION command. Let s say our incarnation key value for this example is 2. 2. Start the database in the following way: RMAN> STARTUP FORCE NOMOUNT; 3. Reset the current incarnation to the incarnation that was current at the point in time that you want to recover to: RMAN> RESET DATABASE TO INCARNATION 2; 4. Restore the old control file from a backup and mount the database with the following commands: RMAN> RESTORE CONTROLFILE FROM AUTOBACKUP; RMAN> ALTER DATABASE MOUNT; 5. Restore and recover the database until the point in time or the SCN: RMAN> RESTORE DATABASE; RMAN> RECOVER DATABASE UNTIL SCN 1000; 6. Open the database after resetting the online log files: RMAN> ALTER DATABASE OPEN RESETLOGS; Oracle calls the preceding type of recovery Simplified Recovery Through Resetlogs. This feature comes in handy when you perform a point-in-time recovery or a recovery using a backup control file and use the RESETLOGS option to open the database. In these cases, you can still use the backup from before the RESETLOGS operation.
Generate Data Matrix ECC200 In Java
Using Barcode printer for Android Control to generate, create Data Matrix ECC200 image in Android applications.
www.OnBarcode.com
Barcode Creation In Java
Using Barcode drawer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.