Database Monitoring

本文介绍了进行数据库性能监控时所需关注的重要功能,包括数据库缓冲区状态概览、当前运行操作及SQL语句统计、读写访问分布、锁情况以及数据库索引和优化器统计等。

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The most important functions that you require for performance monitoring of the database include the following:

->Overview of the database buffers' status

->Overview of the currently running database operations, particularly the SQL statements

->Statistics on the executed SQL statements and their costs

->Overview of the distribution of read and write accesses at the logical (tablespaces) and physical level (for example, container for DB2 for Linux, UNIX, and Windows or datafiles for Oracle) and thus about the hard drives

->Overview of the current lock situations

->Overview of whether the database indexes and optimizer statistics are up to date

->Access to the database's error log and logging of parameter changes



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