CDC Guide for z/OS

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EDMLRPRM Parameters

You can specify the EDMLRPRM DD statement in the JCL for the job that issues the Log-Read API (LRAPI) calls to the PowerExchange Logger. The parameters can be specified in-stream or in a sequential data set.

Use the following DCB attributes if you specify the parameters in a sequential data set that is referenced by the EDMLRPRM DD rather than instream:

RECFM=FB or RECFM=VB

LRECL less than or equal to 255

Any valid block size

Specify one parameter statement per record or line. For a comment, enter an asterisk (*) or a hash (#) character in column one. Use the following general syntax for a parameter entry:

parameter=parm_value

The following table describes the EDMLRPRM parameters:

Parameter	Description
INTLST	Specifies the time LRAPI spends waiting for the PowerExchange Logger to respond to a Resource Interest List command. This wait period starts after the PowerExchange Logger issues the PWXEDM172791I message. Default is 6000 hundredths of seconds (60 seconds).
REQTRN	Specifies the time LRAPI spends waiting for the PowerExchange Logger to start sending data. This wait period starts after the PowerExchange Logger issues the PWXEDM263011I message. Default is 24000 hundredths of seconds (240 seconds).
SIGNON	Specifies the time LRAPI spends trying to connect to the PowerExchange Logger. This time period starts after the PowerExchange Logger issues the PWXEDM263010I message. Default is 6000 hundredths of seconds (60 seconds).
STPTRN	Specifies the time LRAPI spends waiting for the PowerExchange Logger to stop sending more data. This wait period starts after the PowerExchange Logger issues the PWXEDM 263014I message. Default is 12000 hundredths of seconds (120 seconds).
TERM	Specifies the time LRAPI spends disconnecting from the PowerExchange Logger. This time period starts after the PowerExchange Logger issues the PWXEDM263012I message. Default is 4500 hundredths of seconds (45 seconds).

Usually, the Request Data Transfer (REQTRN) command is the command that is most likely to require additional time. When processing a REQTRN command, the PowerExchange Logger might have to wait for archive log data sets to be recalled or for a tape mount. If the PowerExchange Logger cannot access the required log data sets in 4 minutes and provide the data to the LRAPI, the LRAPI request times out, returns reason code 0x0A0E0062 (LoggerDidNotRespondToCommand), and ends the extraction request. In some environments, the LRAPI might frequently encounter this situation because of operational issues. In these environments, use the REQTRN command to extend the wait time.

You can set these parameter values in an EDMLRPRM DD statement in the PowerExchange Listener JCL. However, they then affect each instance of the LRAPI, and all extractions use the same values.

The following example specifies a value of 3 minutes for the REQTRN parameter:

//*
//* Set REQTRN timeout value to 3 minutes (i.e. 3*60*100 )
//*
//EDMLRPRM DD *
REQTRN=18000
/*

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CDC Guide for z/OS

CDC Guide for z/OS

EDMLRPRM Parameters

EDMLRPRM Parameters