barcode crystal reports The SHUTDOWN TRANSACTIONAL Command in Font

Generator Code 39 Full ASCII in Font The SHUTDOWN TRANSACTIONAL Command

The SHUTDOWN TRANSACTIONAL Command
Code 39 Maker In None
Using Barcode creator for Font Control to generate, create Code 3/9 image in Font applications.
www.OnBarcode.com
Generate EAN13 In None
Using Barcode creation for Font Control to generate, create European Article Number 13 image in Font applications.
www.OnBarcode.com
If you don t want to wait for a long time for a user to log off, you can use the SHUTDOWN TRANSACTIONAL command. Oracle will wait for all active transactions to complete before disconnecting all users from the database, and then it will shut down the database. The command is issued as follows: SQL> SHUTDOWN TRANSACTIONAL Here are the details about the SHUTDOWN TRANSACTIONAL command: No new user connections are permitted once the command is issued. Existing users can t start a new transaction and will be disconnected. If a user has a transaction in progress, Oracle will wait until the transaction is completed before disconnecting the user. After all existing transactions are completed, Oracle shuts down the instance and deallocates memory. Oracle writes all redo log buffers and data block buffers to disk. No instance recovery is needed because the database is consistent.
PDF-417 2d Barcode Printer In None
Using Barcode creation for Font Control to generate, create PDF 417 image in Font applications.
www.OnBarcode.com
ANSI/AIM Code 39 Generation In None
Using Barcode maker for Font Control to generate, create Code 39 image in Font applications.
www.OnBarcode.com
The SHUTDOWN IMMEDIATE Command
Print UPC-A Supplement 2 In None
Using Barcode creator for Font Control to generate, create UPC-A image in Font applications.
www.OnBarcode.com
Denso QR Bar Code Creator In None
Using Barcode creation for Font Control to generate, create QR Code 2d barcode image in Font applications.
www.OnBarcode.com
Sometimes, a user may be running a very long transaction when you decide to shut down the database. Both of the previously discussed shutdown modes are worthless to you under such circumstances. Under the SHUTDOWN IMMEDIATE mode, Oracle will neither wait indefinitely for users to log off nor wait for any transactions to complete. It simply rolls back all active transactions, disconnects all connected users, and shuts the database down. Here is the command: SQL> SHUTDOWN IMMEDIATE Here are the details about the SHUTDOWN IMMEDIATE command: No new user connections are allowed once the command is issued. Oracle immediately disconnects all users. Oracle terminates all currently executing transactions. For all transactions terminated midway, Oracle will perform a rollback so the database ends up consistent. This rollback process is why the SHUTDOWN IMMEDIATE operation is not always immediate. This is because Oracle is busy rolling back the transactions it just terminated. However, if there are no active transactions, the SHUTDOWN IMMEDIATE command will shut down the database very quickly. Oracle terminates the background processes and deallocates memory. No instance recovery is needed upon starting up the database because it is consistent when shut down.
Painting Barcode In None
Using Barcode creation for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Encode Delivery Point Barcode (DPBC) In None
Using Barcode creation for Font Control to generate, create USPS POSTNET Barcode image in Font applications.
www.OnBarcode.com
The SHUTDOWN ABORT Command
Recognize USS Code 39 In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Scanning Code 39 In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
The SHUTDOWN ABORT command is a very abrupt shutting down of the database. Currently running transactions are neither allowed to complete nor rolled back. The user connections are just disconnected. This is the command:
Encode UPC - 13 In C#
Using Barcode drawer for .NET framework Control to generate, create GS1 - 13 image in .NET framework applications.
www.OnBarcode.com
GTIN - 13 Recognizer In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
CHAPT ER 10 C REAT IN G A DA TA BAS E
QR Code Decoder In Visual C#.NET
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Creation In None
Using Barcode generator for Online Control to generate, create Barcode image in Online applications.
www.OnBarcode.com
SQL> SHUTDOWN ABORT These are the details about the SHUTDOWN ABORT command: No new connections are permitted once the command is issued. Existing sessions are terminated, regardless of whether they have an active transaction or not. Oracle doesn t roll back the terminated transactions. Oracle doesn t write the redo log buffers and data buffers to disk. Oracle terminates the background processes, deallocates memory immediately, and shuts down. Upon restarting, Oracle will perform an automatic instance recovery, because the database isn t guaranteed to be consistent when shut down. When you shut down the database using the SHUTDOWN ABORT command, the database has to perform instance recovery upon restarting to make the database transactionally consistent, because there may be uncommitted transactions that need to be rolled back. The critical thing to remember about the SHUTDOWN ABORT command is that the database may be shut down in an inconsistent mode. In most cases, you aren t required to explicitly use a RECOVER command, because the database will perform the instance recovery on its own.
Painting UPC A In None
Using Barcode creation for Online Control to generate, create UPC-A Supplement 5 image in Online applications.
www.OnBarcode.com
EAN / UCC - 13 Drawer In Java
Using Barcode encoder for Java Control to generate, create UCC-128 image in Java applications.
www.OnBarcode.com
Tip
QR Code Printer In Java
Using Barcode creator for Java Control to generate, create QR Code image in Java applications.
www.OnBarcode.com
Generate Code 128B In Java
Using Barcode generator for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
www.OnBarcode.com
Oracle recommends that you always shut down the database in a consistent mode by using the SHUTDOWN or SHUTDOWN IMMEDIATE command and not the SHUTDOWN ABORT command before backing it up.
Encode Barcode In None
Using Barcode encoder for Office Word Control to generate, create Barcode image in Word applications.
www.OnBarcode.com
Make Barcode In Java
Using Barcode maker for Android Control to generate, create Barcode image in Android applications.
www.OnBarcode.com
Listing 10-13 shows what happens when an attempt is made to put a database in a read-only mode after the SHUTDOWN ABORT command was used to shut it down first. Note that Oracle won t put the datafiles in read-only mode until the database is manually recovered. (You ll find a lot more information on recovery in 16.) Listing 10-13. The SHUTDOWN ABORT Command and the Need for Instance Recovery SQL> SHUTDOWN ABORT ORACLE instance shut down. SQL> STARTUP MOUNT ORACLE instance started. Total System Global Area 314572800 Fixed Size 1236756 Variable Size 99164396 Database Buffers 213909504 Redo Buffers 5169152 Database mounted. SQL> ALTER DATABASE OPEN READ ONLY; alter database open read only * ERROR at line 1: ORA-16005: database requires recovery SQL> RECOVER DATABASE; Media recovery complete. SQL>
Copyright © OnBarcode.com . All rights reserved.