Pathway/XM System Management Manual

Compaq NonStop™ Pathway/XM System Management Manual—426761-001

E-1

Migrating Pathway Applications to the

Pathway/XM Environment

To migrate existing Pathway applications (managed by a PATHMON process, using the

NonStop

TS/MP and Compaq NonStop™ Pathway/iTS products without Compaq

NonStop™ Pathway/XM) to the Pathway/XM environment, the Pathway/XM product

includes an intelligent migration utility program called PXMCNVRT. This utility

allows you to migrate your applications gradually, step by step.

Used together with its accompanying PATHCOM command (OBEY) file, BUILDCFG,

PXMCNVRT takes a running Pathway application, extracts the necessary information

from it, and creates a Pathway/XM configuration equivalent to your existing

PATHMON environment. This configuration is a first step; it provides improvements in

availability and limited load balancing.

After you have built an initial Pathway/XM configuration based on the output from

PXMCNVRT, you can edit this configuration to incorporate further manageability

improvements made possible by Pathway/XM. If your application is large and consists

of multiple PATHMON environments, you can use BUILDCFG and PXMCNVRT on

each PATHMON environment and then combine them all into one Pathway/XM

configuration.

The following is a recommended approach for stepwise migration of a Pathway

application to use the features of Pathway/XM.

1. If your application consists of multiple PATHMON environments, select one

PATHMON environment for initial migration.

2. Reset the statistics counters in your running PATHMON environment. You can do

this by using a sequence of PATHCOM commands such as the following:

STATS TCP *, RESET

STATS TERM *, RESET

STATS SERVER *, RESET

3. Allow your PATHMON environment to run for some length of time, preferably

during a period of typical transaction workload.

4. Run the BUILDCFG command (OBEY) file (provided with the Pathway/XM

product) by using the following PATHCOM command:

OBEY BUILDCFG

This command file collects information about your application to be used by

PXMCNVRT and stores it in an EDIT file named PCFGSRC.