Category: DB2

Most DBAs have struggled with the pros and cons of choosing one data type over another. This blog post discusses different situations.

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Craig Mullins' blog post maps out the process for developers who need to retrieve a limited number of qualifying rows from a table.

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The dirty read capability can provide relief to concurrency problems for faster performance. Make sure to understand the implications of the UR isolation level.

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It is important for DB2 DBAs and application programmers to know the four isolation levels and their impact on SQL in order to control concurrency and locking.

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Craig Mullins' blog post takes users through the different approaches to access path management in order to develop strategies on how to REBIND your programs.

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One of the most important areas for tuning DB2 subsystem performance is memory usage. This post shares buffering and memory guidelines for better DB2 performance.

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This blog post discusses costs vs. advantages of converting an existing application from IMS DB to DB2.

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Lock avoidance is a mechanism employed by DB2 for z/OS to access data without locking while maintaining data integrity. Avoiding locks can improve performance.

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The DB2 DISPLAY command is a powerful tool that gathers details about your DB2 subsystems and databases. DBAs should know how to use DISPLAY to simplify their job.

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A reminder about the VOLATILE keyword. It was added in DB2 Version 8 and can be specified on a table using CREATE TABLE and/or ALTER TABLE statements

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