15. Establish and test DB2 Backup/Recovery Procedures. These procedures should include a combination of DB2 and non-DB2 utilities in order to handle various recovery scenarios. In addition, DB2 V8 provides two new utilities for providing DB2 controlled system wide backup and a point in time recovery. These are the BACKUP SYSTEM and RESTORE SYSTEM (See OSS note 83000).

In addition, with DB2 V8 and DB2 9 you can leverage the RESTORE SYSTEM utility for point-in-time recovery processes. It is not necessary to use the BACKUP SYSTEM utility in obtaining the system level copy in order to leverage the benefits of a total system level recovery using the RESTORE SYSTEM utility. The system level copy can be obtained using the volume level copy technology of your DASD, along with a SET LOG SUSPEND. With the RESTORE SYSTEM utility the complexity of point-in-time recovery is greatly reduced, providing a process that can be accomplished in a couple of hours.

Recommended initial backup procedure:

Weekly ------> 1. Full DB2 Image Copy Of All R/3 Tablespaces

(SHRLEVEL=CHANGE or REFERENCE) (2 copies - one for offsite)

(Perform a dynamic build of COPY utility JCL and Control statements)

Daily ---------> 2. Full Image Copy of DB2 Catalog/Directory

(SHRLEVEL=REFERENCE) (2 copies - one for offsite)

3.Issue DB2 command ARCHIVE LOG MODE(QUIESCE) to establish point of consistency RBA

Daily ------> 1. FlashCopies of DB2 Volumes using DB2

SUSPEND LOG command or DB2 V8 BACKUP

SYSTEM

Note: DB2 SUSPEND LOG command performs the following actions:

-suspends log writes

-flushes log records to DASD

-records high log RBA in BSDS

-queues updates

-creates a point of consistency identified by a LOG RBA

-bufferpools are not flushed (it is not a checkpoint)

-allows a normal DB2 restart to obtain a consistent database (transactions in flight are rolled back)

Copyright 2006 IBM Solutions Technical Sales (STS)

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IBM DB2 V8, DB2 9 manual System

DB2 V8, DB2 9 specifications

IBM DB2 is a family of data management products that provide powerful capabilities for managing large amounts of data. Among its various versions, DB2 9 and DB2 V8 stand out due to their advanced features and technologies that cater to both enterprise needs and modern database requirements.

DB2 9, also known as "Viper," was a significant release that brought substantial enhancements to the database management system. One of its standout features is its support for XML data. This version introduced a native XML storage architecture, allowing users to store, retrieve, and manage XML data efficiently. The advanced query capabilities for XML data made it easier to integrate both structured and unstructured information into applications.

Another notable aspect of DB2 9 is its enhanced security features. It introduced features like label-based access control, ensuring that sensitive data could be properly managed according to the security policies of an organization. This version also included a transparent data encryption mechanism, protecting data at rest without impacting performance.

DB2 V8, released prior to DB2 9, presented several key features that had a lasting impact on database technology. One of its major advancements was the introduction of pureXML, which laid the groundwork for handling XML data. DB2 V8 also provided improved performance through enhancements such as table partitioning, which allowed for more efficient data organization and retrieval.

Additionally, DB2 V8 emphasized high availability and disaster recovery, incorporating features like DB2 HADR (High Availability Disaster Recovery). This allowed organizations to ensure data continuity even in the event of system failures, a critical aspect for enterprise environments that rely on uninterrupted access to their data.

Both versions of DB2 leveraged advanced technologies such as multi-version concurrency control (MVCC), which enhanced transaction integrity and performance. Their ability to support various platforms, including Linux, UNIX, and Windows, demonstrated IBM's commitment to providing flexible solutions tailored to different environments.

In summary, both IBM DB2 9 and DB2 V8 established a strong foundation in the database management ecosystem. With features focused on XML data management, enhanced security, performance improvements, and high availability, these versions have equipped organizations with the tools necessary to handle contemporary data challenges efficiently and effectively. Their legacy continues to influence database technology today, highlighting IBM's enduring impact on data management solutions.