What can be the size of a page in DB2?

Pages can be four sizes: 4, 8, 16, and 32 KB.

How do I find the size of a DB2 database?

The database size is calculated as follows: dbsize = sum (used_pages * page_size) for each table space (SMS & DMS). An output parameter of type BIGINT that returns the database capacity (in bytes). This value is not available on partitioned database systems.

What are pages in DB2?

Pages are the unit of management within a buffer pool. The unit of I/O is one or more pages chained together. Db2 makes a getpage request operation whenever there is a need to access data in a page, either in an index or a table, such as when executing an SQL statement.

How do I find the size of a DB2 database in Linux?

To execute this procedure you should follow these three steps:

Connect to the database for which you want to know the size and maximum capacity.
Execute the procedure GET_DBSIZE_INFO.
Close the connection.

What are the mandatory components of Db2?

The complex DB2 internal structure has been divided into 5 major components / Address Spaces:

System Services component / System Services Address Space (Job: DSN1MSTR)
Locking Services component/ Locking Services Address Space (Job: IRLMPROC)
Database Services component/ Database Services Address Space (DSN1DBM1)

What is LRG file in Db2?

Answer: The LRG file is large tablespace container. To decrease the size of file : delete the data in the table , commit an offline REORG using the LONGLOBDATA option. An Inplace REORG will not work.

How do I run db2top?

To run in replay mode, db2top must be first run in data collector mode, either in batch mode by running db2top from the command line with the -C parameter, or by activating or deactivating data collection from an interactive session by pressing C. This will create a file

What are the mandatory components of DB2?

Is DB2 A Rdbms?

IBM Db2 is a family of data management products, including database servers, developed by IBM. It is a Relational Database Management System (RDBMS) which supports object-oriented features and non relational structure with XML. Db2 is designed to store, analyze and retrieve the data efficiently.

What are catalog tables in DB2?

The catalog tables describe such things as table spaces, tables, columns, indexes, privileges, application plans, and packages. Authorized users can query the catalog; however, it is primarily intended for use by Db2 and is therefore subject to change. All catalog tables are qualified by SYSIBM.

What is index in DB2?

Index is a set of pointers, which can refer to rows in a table, blocks in MDC or ITC tables, XML data in an XML storage object that are logically ordered by the values of one or more keys. It is created on DB2 table columns to speed up the data access for the queries, and to cluster and partition the data efficiently.

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