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IBM 5695-DF1, 5655-DB2 manual Archive Logs, Example Vsam Definition of One Active Log

Models: 5695-DF1 5655-DB2

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DEFINE CLUSTER -

( NAME (DB2V610Z.LOGCOPY1.DS01) -

VOLUMES(SBOX09)

-

REUSE

-

RECORDS(8640)

-

LINEAR )

-

DATA

-

( NAME (DB2V610Z.LOGCOPY1.DS01.DATA) -

)

Figure 20. Example VSAM Definition of One Active Log

7.3.1 Storage Class

A Storage Class with guaranteed space set to yes, enables the DB2 administrator to decide the location of the active logs.

•SCDBACTL

7.3.2Management Class

The following Management Class has been defined for active logs, no SMS management is required.

•MCDBACTL

7.3.3Storage Group

The same Storage Groups used for the BSDSs with guaranteed space set to yes, are also used for the active logs.

•SGDBACTL for several DB2 subsystems

•SGDB2PLG for the DB2P susbsystem

7.3.4 ACS Example

An example of ACS routines to allocate these SMS classes and Storage Groups for active logs is shown in Appendix B, section B.1, “BSDS and Active Logs” on page 185.

7.4 Archive Logs

Archive log data sets are DB2 managed backups of the active log data sets. Archive log data sets are required for any recovery that spans a period of time in excess of the time covered by the active logs. This is illustrated in Figure 5 on page 19. Archive log data sets are created automatically by DB2 when an active log fills up, but they may also be created with the -ARCHIVE command.

Data Organization

Archive Log data sets are physical sequential data sets. Record size is 4096 and the block size is typically 28672 bytes. The allocation of archive logs is done dynamically by DB2. The DB2 system administrator can influence this process, specifying options in the DB2 parameter module (default name = DSNZPARM). Those parameters are defined on installation panel DSNTIPA. An example definition is shown in Figure 21 on page 70. On this panel, the DB2 administrator

Managing DB2 Recovery Data Sets with SMS 69

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IBM 5695-DF1, 5655-DB2 manual Archive Logs, Example Vsam Definition of One Active Log
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5695-DF1, 5655-DB2 specifications

IBM 5655-DB2 and 5695-DF1 are significant components within the IBM software ecosystem, predominantly focusing on data management and integration solutions. These offerings cater primarily to enterprise environments that require robust database management systems and associated frameworks to maintain and manipulate data efficiently.

IBM 5655-DB2 is a well-known relational database management system (RDBMS) that excels in managing large volumes of structured data. Its architecture is designed to support high availability, scalability, and performance, crucial for businesses operating in today’s data-driven world. Some of its main features include advanced indexing capabilities, support for complex queries, and dynamic workload management. Additionally, it provides strong concurrency controls, which enable multiple users to access and manipulate data simultaneously without compromising data integrity.

One of the key characteristics of DB2 is its support for various data types, including JSON and XML, making it versatile for modern applications that generate data in diverse formats. It also features robust security mechanisms to protect sensitive data, aligning with compliance standards across industries. Integration with analytics tools further allows businesses to derive insights from their data, enhancing decision-making processes.

On the other hand, IBM 5695-DF1, also known as the InfoSphere DataStage, is a powerful data integration tool that facilitates the extraction, transformation, and loading (ETL) of data from various sources to target systems. It empowers organizations to streamline their data flows, ensuring that clean, consistent information is available for analysis and operational use. Key features of 5695-DF1 include a user-friendly graphical interface that enhances developer productivity and a rich set of connectors for numerous data sources, enabling seamless data integration.

DataStage also supports real-time data integration, allowing businesses to keep their data synchronized across multiple platforms. Its parallel processing capabilities dedicatedly optimize performance, enabling organizations to handle vast datasets efficiently. It incorporates data quality tools that help in validating and cleansing data before it is used for decision-making processes.

Both IBM 5655-DB2 and 5695-DF1 are part of a broader strategy to accommodate the evolving landscape of data management. Businesses leverage these technologies to enhance their data architectures, fostering agility and competitive advantage in their respective markets. Their integration capabilities, along with a focus on security and scalability, position them as vital assets in modern enterprise environments. Whether managing critical data within a database or ensuring seamless data flow across systems, these IBM offerings provide a comprehensive approach to handling complex data challenges.