CDC Guide for z/OS

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Configuring AGENTREP Parameters

The AGENTREP data set, which is created during the installation, specifies PowerExchange Agent parameters that are related to controlling the capture registration subtask.

The AGENTREP data set is created as a sequential data set. Do not change it to a PDS member.

The AGENTREP data set name is specified in the RepositoryDSN parameter in the AGENTCTL parameters, as follows:

RepositoryDSN=hlq.AGENTREP

The hlq
variable is the PowerExchange high-level qualifier that is specified in the z/OS Installation Assistant during installation.

Alternatively, you can specify the name of the PowerExchange CCT data set in the RepositoryDSN parameter, as follows:

RepositoryDSN=hlqvs.CCT

The hlqvs
variable is the PowerExchange high-level qualifier for VSAM, which is specified in the z/OS Installation Assistance.

For improved performance and resource usage, Informatica recommends that you use the AGENTREP data set rather than the CCT data set as the PowerExchange Agent repository.

If you use the AGENTREP data set as the PowerExchange Agent repository, the PowerExchange Agent only retrieves the capture registrations from the PowerExchange Listener during each registration update interval, when no changes have occurred.

If you use the CCT data set as the PowerExchange Agent repository, the PowerExchange Agent must read the entire CCT during each registration update interval to determine if any changes have occurred. This activity results in unnecessary I/O activity and CPU overhead in the PowerExchange Agent address space.

The following table describes the AGENTREP parameters:

Parameter	Description
BackToBackDelay	Determines the minimum time interval between update notifications. You can use this parameter to reduce or eliminate the number of registration change messages in environments where repositories are modified frequently. When messages are suppressed, you can use the Repository Display command to display the latest change information. Default is 0, which does not suppress any messages.
Cache1	Copy 1 of the sequential cache data set. No default value.
Cache2	Copy 2 of the sequential cache data set. No default value.
Location	The name of the PowerExchange Listener that is retrieved from the PowerExchange configuration member. No default value.
RestartInterval	Interval at which the Agent subtask that interrogates the PowerExchange Listener for capture registration changes is restarted. This interval is expressed as the number of UpdateInterval intervals. Restarting effectively frees memory that was allocated to the TCP/IP layer. Default is 60.
UpdateInterval	The interval, in minutes, at which PowerExchange checks for registration changes. PowerExchange issues messages in the Agent output when it checks for changes. Default is 1.

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CDC Guide for z/OS

CDC Guide for z/OS

Configuring AGENTREP Parameters

Configuring AGENTREP Parameters