.net - What is the difference between CommandTimeout and QueryTimeout on the app.config file when using the iSeries Access ODBC Driver? -

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i working .net console application who's iseries datasource moved. after move application experienced timeouts led me believe 1 of timeouts needed increased (and yes network connections optimized).

this part of error console application started generating:

error message: error [hy000] [ibm][system access odbc driver][db2 i5/os]sql0666 - sql query exceeds specified time limit or storage limit.

when increased commandtimeout in code 60 120 worked. think it'd ideal set timeout @ connection string removed line.

at connection string added querytimeout=120. when ran program, received above error once again.

fyi, here's connection string looks like:

"driver=iseries access odbc driver;system=x.x.x.x;uid=something;pwd=something;querytimeout=120"

what noticed doing data fetch seemed not timeout when querytimeout set 0 on connection string. setting else fail. meanwhile commandtimeout property in .net code changed needed , work. bringing me question, difference between querytimeout , commandtimeout? , why querytimeout seem work when it's set 0 not else?

querytimeout boolean value indicates whether or not respect sql_attr_query_timeout value set through commandtimeout property.

querytimeout

specifies whether driver disable support query timeout attribute, sql_attr_query_timeout. if disabled, sql queries run until finish.

0 = disable support query timeout attribute
1 = allow query timeout attribute set

default 1.

commandtimeout

the time in seconds wait command execute. default 30 seconds.


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