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Early in the development process, many design decisions to make DB2 applications and databases on the performance has a huge impact. This article is in the z / OS environment to achieve better performance provides some general guidelines and recommendations.

IBM professional certification examinations for universities in China as a cooperation project IBM is an integral part of the certification training course is conducted in colleges and universities, from the original OS / 2 began, to the present including the RS/6000, AS/400, WebSphere, DB2, E- business, Power Systems 000-977 have been dozens of doors, including a total of certification programs, covering operating systems, system management and application development in all aspects of the formation of a large certification system. Certification training from 1996 until today, the total number of students trained over ten thousand, to participate in mainland China in 2000 the number of certification exams the first time surpassed the United States ranked first in the world.

Background: The need to change the database table space, or need all the tables in the database data migration to a new database.

Steps:

1. By db2 000-541 Console (db2cc) Select all the tables in the source database, export it into a DDL script;

2. According to the script needs to make the necessary changes, for example, change the table space GATHER;

3. New Database, the new DMS table spaces: GATHER;

4. The DDL script to execute in the database;

5. Check the source code for all tables in the database, automatically generate export script;

6. Check the source code for all tables in the database, automatic generation of import script;

7. Connect the implementation of export script source database;

8. Connect the implementation of the target database import script;

IBM DB2 Certification database offline backup and recovery experiment

    Script list

    - Step1: full backup of the database (offline, the backup timestamp is 20071121152940)

    db2 backup db TestDB to D: DB2_Train

    - Step2: simulated disaster, forced to delete database

    db2 drop db TestDB

    - Step3: According to restore a full backup of the database, the database

    db2 restore db TestDB from D: DB2_Train taken at 20071121152940

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