IBM 000-8697 Manual de usuario descargar pdf (Pagina 571)

100

101

Utilities 7-93

Option Descriptions

The next portion of the -p display tabulates the number of times different

ISAM callswereexecuted.The calls occur atthelowestlevelofoperationand

do not necessarily correspond one-to-one with SQL statement execution. A

singlequerymightgeneratemultipleISAMcalls.Thesestatisticsaregathered

across the OnLine system and cannot be used to monitor activity on a single

database unless only one database is active or only one database exists.

isamtot is the total number of calls.

open increments when a tblspace is opened.

start increments when positioning within an index.

read increments when the read function is called.

write increments with each write call.

rewrite increments when an update occurs.

delete increments when a row is deleted.

commit increments each time an iscommit() call is made. There is not

a one-to-one correspondence between this value and the

number of explicit COMMIT WORK statements that are

executed.

rollbk increments when a transaction is rolled back.

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