Work database table spaces. When required, 8K and 16K pages are placed in a 32K table space of the Work database.

Figure 4 on page 16 shows how the size and number of table spaces in the Work database is defined. Parameters 13 through 16 on this figure show the default number of table spaces (one for each page size), and default sizes for the 4K table space (16 MB) and the 32K table space (4 MB).

DSNTIPD

INSTALL DB2 - SIZES

 

 

 

===>

 

 

 

 

 

Check numbers and reenter to change:

 

 

 

1

DATABASES

 

===> 200

In this subsystem

 

2

TABLES

 

===> 10

Per database (average)

 

3

COLUMNS

 

===> 10

Per table (average)

 

4

VIEWS

 

===> 3

Per table (average)

 

5

TABLE SPACES

===> 10

Per database (average)

 

6

PLANS

 

===> 200

In this subsystem

 

7

PLAN STATEMENTS

===> 30

SQL statements per plan (average)

8

PACKAGES

 

===> 300

In this subsystem

 

9

PACKAGE STATEMENTS

===> 10

SQL statements per package (average)

10

PACKAGE LISTS

===> 2

Package lists per plan (average)

11

EXECUTED STMTS

===> 15

SQL statements executed (average)

12

TABLES IN STMT

===> 2

Tables per SQL statement (average)

13

TEMP 4K SPACE

===> 16

Amount of 4K-page work space (megabytes)

14

TEMP 4K DATA SETS

===> 1

Number of data sets for 4K data

15

TEMP 32K SPACE

===> 4

Amount of 32K-page work space(megabytes)

16

TEMP 32K DATA SETS

===> 1

Number of data sets for 32K data

F1=HELP

F2=SPLIT

F3=END

F4=RETURN

F5=RFIND

F6=RCHANGE

F7=UP

F8=DOWN

F9=SWAP

F10=LEFT

F11=RIGHT

F12=RETRIEVE

Figure 4. Installation Panel for Sizing DB2 System Objects

3.4.3 SYSIBM.SYSCOPY

This table is a DB2 Catalog table. It is referred to by its short name: SYSCOPY.

The table space in which SYSCOPY is stored is called: DSNDB06.SYSCOPY.

SYSCOPY contains recovery related information for each table space. Its main purpose is to manage image copies, but other related recovery information is also recorded here. For example, SYSCOPY contains information of:

•Image copies

•Quiesce points

•LOAD executions

•REORG executions

•RECOVER executions

3.4.4SYSIBM.SYSLGRNX

This table is a DB2 Directory table. It is referred to by its short name:

SYSLGRNX. The table space in which SYSLGRNX is stored is called:

DSNDB01.SYSLGRNX.

SYSLGRNX stores records that serve to improve recovery performance by limiting the scan of the log to changes that must be applied. The SYSLGRNX records contain the first log RBA (or LRSN in a data sharing group) and the last

16Storage Management with DB2 for OS/390

Page 37 Page 39
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Image 38
IBM 5655-DB2, 5695-DF1 manual DSNDB01.SYSLGRNX
Page 37 Page 39

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.
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