ISAM Calls

ISAM calls are the calls made at the lowest level of the OnLine server. One SQL statement can result in any number of ISAM calls, so this command cannot be used to monitor the performance of individual SQL statements in a typical production application. The statistics are grouped into ISAM call types and record the number of times that particular call type was made. They can be used to monitor the type of activity across the OnLine server.

Open Tablespace/s

Number of open tablespace calls made per second

Index position calls/s

Number of index position calls made.

Read calls/s

Number of read function calls made.

Write, Rewrite, Delete calls/s

Write Number of write function calls made.
Rewrite Number of rewrite function calls made when an update us requested
Delete Number of delete function calls made.

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