By Dwaine R. Snow, Thomas Xuan Phan
Now, there is a definitive consultant to complex DB2 UDB database management that still promises the entire intensity and perception you want to 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 may function a reference once you have handed the test.For the 1st time, this publication brings jointly IBM top practices, ideas, tips, guidance, and principles of thumb for nearly each point 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 dealing 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 company environmentRapid restoration within the occasion of desk area or desk point disastersEffective tracking and challenge determinationMaximizing functionality and scalability
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Extra resources for Advanced DBA Certification Guide and Reference for DB2 UDB v8 for Linux, Unix and Windows
Multi-partition partition groups: Partition groups that contain more than one database partition. 13 illustrates a database with three partition groups, pg123, pg3, and pg1234. Partition group pg3 is a single-partition partition group, because only database partition 3 is contained in it. Partition groups pg123 and pg1234 are multi-partition partition groups. In this example, pg123 spans partitions 1, 2, and 3; pg1234 spans all four database partitions. 13. Single- and multi-partition groups. NOTE Database partitions can be in more than one partition group.
Space map extent holding high water mark. 48 49 The dropping of existing table space containers is only allowed if the number of extents in the container(s) being dropped is less than or equal to the number of free extents above the high water mark in the table space. The number of free extents above the high water mark in the table space is important because all extents up to and including the high water mark must be able to fit in the same logical position within the table space. The altered table space must have enough space to hold all of the data.
3. When adding or removing space from a table space, the following rules must be followed: ♦ EXTEND and RESIZE can be used in the same statement, provided that the size of each specified container is increasing. ♦ REDUCE and RESIZE can be used in the same statement, provided that the size of each specified container is decreasing. ♦ EXTEND and REDUCE cannot be used in the same statement, unless they are being directed to different database partitions. ♦ ADD cannot be used with REDUCE or DROP in the same statement, unless they are being directed to different database partitions.