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REORGCHK

REORGCHK

REORGCHK

REORGCHK

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In some cases , the reorgchk command can also be used to update the database statistics with one simple command , as shown in Listing 11 .

某些情况下，reorgchk 命令也可用来更新数据库统计，只需一个简单的命令，如清单 11 所示。

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Run REORGCHK periodically , or when users notice degraded performance .

要定期运行 REORGCHK ，或者在用户注意到性能下降时运行它。

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To update statistics on all the tables or a group of tables in DB2, you can use the REORGCHK command with the UPDATE STATISTICS option .

要对 DB2 中所有表或一组表的统计信息进行更新，可使用 REORGCHK 命令以及 UPDATESTATISTICS 选项。

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REORGCHK can also invoke RUNSTATS before examining the statistics .

REORGCHK 还可以在检查统计信息之前调用 RUNSTATS 。

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Similar to RUNSTATS, you should always run REORGCHK when significant changes to data occur .

与 RUNSTATS 类似，当发生重大的数据更改时，应该始终运行 REORGCHK 。

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Example 33. Collect catalog statistics for a table using REORGCHK

使用 REORGCHK 收集一个表的目录统计信息

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Example 32. Collect catalog statistics for all tables using REORGCHK

使用 REORGCHK 收集所有表的目录统计信息

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