Oracle space management

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  • As a database management system, the management of Oracle file structures is critically important to the successful operation of any system. The Oracle administrator must understand all levels of Oracle file management, including data file management principles, tablespace management principles, and the storage of individual objects within the tablespaces. As Oracle has evolved into one of the world's most complex database management systems, it is imperative that all Oracle professionals understand how their information is stored both at the logical and physical level.

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  • Many times the Oracle DBA is hired once the database becomes to much to handle without one, inherits the position or is appointed to it “since they are so good with computers”. In any case, they usually get an undocumented system that follows no conventions and holds many traps for the unwary DBA.

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  • After completing this lesson, you should be able to do the following: Use automatic segment space management Use manual segment space management Manage extents and Oracle blocks Ensure effective use of space Determine the high-water mark Describe the use of Oracle block parameters Recover space from sparsely populated segments Describe and detect chaining and migration of Oracle blocks Perform index reorganization

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  • Profiles A profile is a named set of the following password and resource limits: Password aging and expiration Password history Password complexity verification Account locking CPU time Input/output (I/O) operations Idle time Connect time Memory space (private SQL area for Shared Server only) Concurrent sessions After a profile has been created, the database administrator can assign it to each user. If resource limits are enabled, the Oracle server limits the database usage and resources to the defined profile of the user....

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  • Software Installation Fast lightweight install Major redesign of installation process Single CD, 20 Minutes, CPU, memory, disk space consumption greatly reduced, Extremely lightweight client install (3 files) using Oracle Instant Client, Automation of All Pre and Post Install Steps, Validate OS Configuration, patches, resource availability etc

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  • People who administer the operation of an Oracle database system, known as database administrators (DBAs), are responsible for creating Oracle databases, ensuring their smooth operation, and monitoring their use. In addition to the many alerts and advisors Oracle provides, Oracle also offers the following features: Self-Managing Database Oracle Database provides a high degree of self-management - automating routine DBA tasks and reducing complexity of space, memory, and resource administration.

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  • After completing this lesson, you should be able to do the following: List the operations that use temporary space Create and monitor temporary tablespaces Identify actions that use the temporary tablespace Describe the use of disk and memory for sorting Identify the SQL operations that require sorts Differentiate between disk and memory sorts List ways to reduce total sorts and disk sorts Determine the number of memory sorts performed Set parameters to optimize sorts

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