Download PDF by Dwaine R. Snow, Thomas Xuan Phan: Advanced DBA Certification Guide and Reference for DB2 UDB

By Dwaine R. Snow, Thomas Xuan Phan

ISBN-10: 0130463884

ISBN-13: 9780130463883

Now, there is a definitive advisor to complex DB2 UDB database management that still promises all of the intensity and perception you must organize for the harsh new IBM examination. instantly from the DB2 specialists at IBM, this booklet deals systematic and authoritative insurance of each examination goal and may function a reference upon getting handed the test.For the 1st time, this booklet brings jointly IBM most sensible practices, strategies, tips, instructions, and principles of thumb for nearly each element of complex DB2 UDB v8 database administration-including all this and more:Ability to layout, create, and deal with desk spacesAbility to layout, create, and deal with buffer poolsWhen and the way to take advantage of parallelism in DB2 UDBConfiguring federated database accessDesigning and imposing a backup and restoration strategyAbility to enforce a standby databaseMonitoring and tuning DB2Using and handling tables with multidimensional clusteringDesigning and configuring a number of database partitionsImplementing authentication and encryption on a wide scaleLeveraging parallelism and symmetric multiprocessingPreparing for and executing restoration in an company environmentRapid restoration within the occasion of desk house or desk point disastersEffective tracking and challenge determinationMaximizing functionality and scalability

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For example, in the following table space extent map, Extent 70 is currently being rebalanced. Range [ 0] [ 1] [ 2] [ 3] MaxPage 2239 2271 5599 5887 MaxExtent 69 70 174 183 StartStripe 0 17 23 59 EndStripe 17 17 58 61 Adj 0 0 2 3 Containers 4 (0,1,2,3) 1 (2) 3 (0,1,2) 4 (0,1,2,3) 55 56 Rebalance Example 1 A table space has three containers of size 70, 50, and 90 pages, and an extent size of 10. Removing one extent from each of the containers for the container tag makes the space available for data in each container 6, 4, and 8 extents in size.

Rebalance Example 2 Using the original table space from Rebalance Example 1 above, if Container 1 is resized from 50 to 90 pages, the new table space extent map will look like the following: 57 58 The corresponding table space map, as shown in a table space snapshot, will look like this: Range Number [0] [1] Stripe Set [0] [0] Stripe Offset 0 0 Max Extent 15 21 Max Page 179 219 Start Stripe 0 6 End Adj. Stripe 5 0 7 0 Containers 3 (0, 1, 2) 2 (1, 2) When adding a container to a table space that has more than one stripe set, the container can be added to any of the existing stripe sets, using the ADD TO STRIPE SET option on the ALTER TABLE SPACE statement.

System-defined partition groups: These partition groups are created when the database is created. cfg file ◊ Holds temporary tables created during database processing on each database partition ◊ Cannot be dropped using the DROP DATABASE PARTITION GROUP statement ♦ IBMCATGROUP ◊ Restricted to the catalog partition. The catalog partition is the partition where the CREATE DATABASE command was executed ◊ Contains all of the system catalog tables ◊ Cannot be altered to span more partitions ◊ Cannot be dropped using the DROP DATABASE PARTITION GROUP statement NOTE To remain compatible with scripts and programs written for previous versions of DB2, NODEGROUP can be used in place of DATABASE PARTITION GROUP.

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Advanced DBA Certification Guide and Reference for DB2 UDB v8 for Linux, Unix and Windows by Dwaine R. Snow, Thomas Xuan Phan

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