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HP NonStop Shadowbase Command Definitions

Queue Manager Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

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Queue Manager Command Descriptions

Queue Manager commands are associated with the definition and control

of Queue Managers in a HP Shadowbase system. A Queue Manager is

an optional component of a HP Shadowbase replication system that

buffers and stores messages from the Collector to a Consumer on disk in

a First In – First Out (FIFO) queue. It provides several benefits within a

replication system:

 During a restart, it reduces the amount of data that must be read

from the audit trail. Data that was sent during the previous run and

stored in the queue is resent directly from the queue. If the Queue

Manager is configured to run on the target system, the restart data

is sent directly to the Consumer, reducing network traffic.

 By saving the data on the target system, the Queue Manager will

reduce the amount of data lost if the source system fails and cannot

be recovered.

 It prevents delays in the Collector reading and sending audit data

when a Consumer lags. The messages are buffered and written in

large blocks to unstructured files by the Queue Manager, allowing

the Collector to run at essentially full speed. A slow Consumer

associated with a Queue Manager does not impact the Collector.

Without a Queue Manager, a multi-threaded Collector can only run

as fast as the slowest Consumer.

 It allows the Consumer to be taken offline without taking the

associated Collector offline. This is particularly important in a multi-

threaded replication environment, where one Collector may be

feeding multiple Consumers.

Commands are available to add and delete Queue Managers; to start and

stop Queue Managers; to configure Queue Managers by setting and

modifying attributes; and to display information and operating status.

These commands are described below.

ADD QMGR Command

The ADD QMGR command enters a description of a Queue Manager into

the HP Shadowbase configuration. This command is entered after the

appropriate SET commands for the Queue Manager have been issued.

The syntax is:

ADD [ QMGR ] [<audmon_name>.]qmgr_name

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HP Integrity NonStop H-Series Guía de usuario Pagina 286