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

By Dwaine R. Snow, Thomas Xuan Phan

Now, there is a definitive consultant to complicated DB2 UDB database management that still promises all of the intensity and perception you must organize for the cruel new IBM examination. instantly from the DB2 specialists at IBM, this e-book deals systematic and authoritative assurance of each examination aim and should function a reference once you have handed the test.For the 1st time, this booklet brings jointly IBM most sensible practices, concepts, counsel, guidance, and ideas of thumb for nearly each point of complicated 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 enforcing a backup and restoration strategyAbility to enforce a standby databaseMonitoring and tuning DB2Using and coping with 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 firm environmentRapid restoration within the occasion of desk area or desk point disastersEffective tracking and challenge determinationMaximizing functionality and scalability

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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. NOTE If a user temporary table space is created, it must be created in the IBMDEFAULTGROUP or another user-created partition group.

This can allow unused space to be freed back to the system for other file systems, or can also allow the reuse of the space for containers in another table space. 44 45 A container cannot be dropped from a table space if there will not be enough space in the table space to hold the existing data. Therefore, before dropping a container from a table space, it is a good idea to examine the table space high water mark and also to determine how much space is used and how much space is available to ensure that there is enough free space on the remainder of the containers to hold the data.

Alter Table Space Options The following options can be used to alter a table space: ADD: Used to add one or more containers to the specified table space. When adding a container to a table space, the container can be added to the last stripe set in the table space. If the container is added to an existing stripe set, the stripe set can be explicitly specified using the ADD TO STRIPE SET option. Otherwise, it will be added to the existing table space, based on the size of the existing containers and the size of the new container.

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