Informatica workflow architecture - question

One of my MANAGER recently discussed with me regarding a process improvement for migrating only the required session not the entire workflow. For example, if a workflow has 50 sessions. He is suggesting to convert all session tasks into a child workflows; i.e if a workflow has 10 sessions there will be one parent workflow to trigger the 10 child workflows. In this way, he said that if there any changes for one session we can make only in one workflow and move that changes.
I am not convinced with this, please provide your suggestions.

The drive in which I installed informatica ran out of disc space. So I found this in the error log SF_34125 Error in writing storage file [C:\Informatica\9.0.1\server\infa_shared\Storage\pmservice_Domain_ssintr01_INT_SSINTR01_1314615470_0.dat]. System returns error code [errno = 28], error message [No space left on device]. Then I tried to shut down the integration service and then freeup some space on the disc. I got the following message in the log file LM_36047 Waiting for all running workflows to complete.SF_34014 Service [INT_SSINTR01] on node [node01_ssintr01] shut down. Then when I tried to start the integration service again, I got the following error Could not execute action... The Service INT_SSINTR01 could not be enabled due to the following error: [DOM_10079] Unable to start service [INT_SSINTR01] on any node specified for the service After this I am not able to find any entry in the log file for the integration service. So I went to the domain log to find out more details. I found these in the domain log DOM_10126 Request to disable [SERVICE] [INT_SSINTR01] in [COMPLETE] mode.DOM_10130 Stop service process for [SERVICE] [INT_SSINTR01] on node [node01_ssintr01].LIC_10040 Service [INT_SSINTR01] is stopping on node [node01_ssintr01].SPC_10015 Request to stop process for service [INT_SSINTR01] with mode [COMPLETE] on node [node01_ssintr01].DOM_10127 Request to disable service [INT_SSINTR01] completed.DOM_10126 Request to disable [SERVICE] [Repo_SSINTR01] in [ABORT] mode.DOM_10130 Stop service process for [SERVICE] [Repo_SSINTR01] on node [node01_ssintr01].LIC_10042 Repository instance [Repo_SSINTR01] is stopping on node [node01_ssintr01].SPC_10015 Request to stop process for service [Repo_SSINTR01] with mode [ABORT] on node [node01_ssintr01].DOM_10127 Request to disable service [Repo_SSINTR01] completed.DOM_10115 Request to enable [service] [Repo_SSINTR01].DOM_10117 Starting service process for service [Repo_SSINTR01] on node [node01_ssintr01].SPC_10014 Request to start process for service [Repo_SSINTR01] on node [node01_ssintr01].SPC_10018 Request to start process for service [Repo_SSINTR01] was successful.SPC_10051 Service [Repo_SSINTR01] started on port [6,019] successfully.DOM_10118 Service process started for service [Repo_SSINTR01] on node [node01_ssintr01].DOM_10121 Selecting a primary service process for service [Repo_SSINTR01].DOM_10120 Service process on node [node01_ssintr01] has been set as the primary node of service [Repo_SSINTR01].DOM_10122 Request to enable service [Repo_SSINTR01] completed.LIC_10041 Repository instance [Repo_SSINTR01] has started on node [node01_ssintr01].DOM_10115 Request to enable [service] [INT_SSINTR01].DOM_10117 Starting service process for service [INT_SSINTR01] on node [node01_ssintr01].SPC_10014 Request to start process for service [INT_SSINTR01] on node [node01_ssintr01].DOM_10055 Unable to start service process [INT_SSINTR01] on node [node01_ssintr01].DOM_10079 Unable to start service [INT_SSINTR01] on any node specified for the service.DOM_10126 Request to disable [SERVICE] [INT_SSINTR01] in [COMPLETE] mode.DOM_10130 Stop service process for [SERVICE] [INT_SSINTR01] on node [node01_ssintr01].LIC_10040 Service [INT_SSINTR01] is stopping on node [node01_ssintr01].SPC_10015 Request to stop process for service [INT_SSINTR01] with mode [COMPLETE] on node [node01_ssintr01].DOM_10127 Request to disable service [INT_SSINTR01] completed.DOM_10126 Request to disable [SERVICE] [Repo_SSINTR01] in [ABORT] mode.DOM_10130 Stop service process for [SERVICE] [Repo_SSINTR01] on node [node01_ssintr01].LIC_10042 Repository instance [Repo_SSINTR01] is stopping on node [node01_ssintr01].SPC_10015 Request to stop process for service [Repo_SSINTR01] with mode [ABORT] on node [node01_ssintr01].DOM_10127 Request to disable service [Repo_SSINTR01] completed.DOM_10115 Request to enable [service] [Repo_SSINTR01].DOM_10117 Starting service process for service [Repo_SSINTR01] on node [node01_ssintr01].SPC_10014 Request to start process for service [Repo_SSINTR01] on node [node01_ssintr01].SPC_10018 Request to start process for service [Repo_SSINTR01] was successful.SPC_10051 Service [Repo_SSINTR01] started on port [6,019] successfully.DOM_10118 Service process started for service [Repo_SSINTR01] on node [node01_ssintr01].DOM_10121 Selecting a primary service process for service [Repo_SSINTR01].DOM_10120 Service process on node [node01_ssintr01] has been set as the primary node of service [Repo_SSINTR01].DOM_10122 Request to enable service [Repo_SSINTR01] completed.LIC_10041 Repository instance [Repo_SSINTR01] has started on node [node01_ssintr01].DOM_10115 Request to enable [service] [INT_SSINTR01].DOM_10117 Starting service process for service [INT_SSINTR01] on node [node01_ssintr01].SPC_10014 Request to start process for service [INT_SSINTR01] on node [node01_ssintr01].DOM_10055 Unable to start service process [INT_SSINTR01] on node [node01_ssintr01].DOM_10079 Unable to start service [INT_SSINTR01] on any node specified for the service.Then I tried shutting down the domain and restarting the informatica service again. I got the following error when the Integration service was initializedDOM_10115 Request to enable [service] [INT_SSINTR01].DOM_10117 Starting service process for service [INT_SSINTR01] on node [node01_ssintr01].SPC_10014 Request to start process for service [INT_SSINTR01] on node [node01_ssintr01].SPC_10009 Service process [INT_SSINTR01] output [Informatica(r) Integration Service, version [9.0.1], build [184.0604], Windows 32-bit].SPC_10009 Service process [INT_SSINTR01] output [Service [INT_SSINTR01] on node [node01_ssintr01] starting up.].SPC_10009 Service process [INT_SSINTR01] output [Logging to the Windows Application Event Log with source as [PmServer].].SPC_10009 Service process [INT_SSINTR01] output [Please check the log to make sure the service initialized successfully.].SPC_10008 Service Process [INT_SSINTR01] output error [ERROR: Unexpected condition at file:[..\utils\pmmetrics.cpp] line:[2118]. Application terminating. Contact Informatica Technical Support for assistance.].SPC_10012 Process for service [INT_SSINTR01] terminated unexpectedly.DOM_10055 Unable to start service process [INT_SSINTR01] on node [node01_ssintr01].DOM_10079 Unable to start service [INT_SSINTR01] on any node specified for the service. I tried creating a new integration service and associating it with the same repository. Even then I got the same error. So I tried creating a new repository and a new integration service. Even then I got the same error. What might be the workaround to start the integration service?

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Hi,
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Frustrating isn't it?
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Let me tell you the real story:
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Little architectural question: why is all the stuff
that is needed to render a page put into the
constructor of a backing bean? Why is there no
beforeRender method, analogous to the
afterRenderResponse method? That method
can then be called if and only if a page has to be
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>
Reason I bring up this question is that I have to do
a query in the constructor in a page backing bean.
Every time the backing bean is created the query is
executed, including when the page will not be
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