AS400 Basic questions

Hello Team,

I have following doubts on the below questions . Kindly please answer

-What is the difference between private authority and object authority?
- How do we delete temporary and permanent PTF ? Does it depend on the PTF type?
-PTF install has failed and what is the roll back plan?
-what is PSP and use of it?
-How do we connect HMC to server? I mean how HMC will talk to all the Hardware?
-Do you have document to configure HMC from scratch?
-Difference between capped and uncapped processor?
-what is processor pool and memory pool?
-what is CPW and how do we calculate the CPW of our LPAR/server?
-How to check how much memory is being used currently? using WRKSYSACT?
-In some point of time the ASP has been reached from 40 to 90, so how do we identify which object has been caused/saved?
- What is MIMIX Application Group and Data group?
Avinash Chandra MandavilliAsked:
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Gary PattersonVP Technology / Senior Consultant Commented:
That is 12 questions - mostly unrealated.  You will probably get a better response if you post them individually.
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Avinash Chandra MandavilliAuthor Commented:
Hi Gary,

I think you can answer to those questions . Please help . Actually , i was waiting for your response.
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Gary PattersonVP Technology / Senior Consultant Commented:
-What is the difference between private authority and object authority?

Private authority is authority granted to an individual user or group profile.
Object authority is the collection of authorities assigned to an individual object.
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Gary PattersonVP Technology / Senior Consultant Commented:
- How do we delete temporary and permanent PTF ? Does it depend on the PTF type?

Not sure why you would want to delete PTFs, can you explain?  Perhaps you want to clean up PTF save files and PTF cover letters after PTFs have been installed?  Documentation for all these types of activities are in the IBM Knowledge Center.  You don't mention your OS version, so heere is an example for V7R3:

https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzam8/rzam8fixcleanup1.htm
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Gary PattersonVP Technology / Senior Consultant Commented:
-PTF install has failed and what is the roll back plan?

PTF installs rarely fail. When they do, the best approach is to contact IBM support for assistance.  There are multiple different types of PTF installs (CUME, HIPER, Group, and Individual).  Generally only one specific PTF will have a problem, and if install fails, it will generally not be applied.  IBM provides documentation of various scenarios:

https://www-01.ibm.com/support/docview.wss?uid=nas8N1018906
http://www-01.ibm.com/support/docview.wss?uid=nas8N1014960
http://www-01.ibm.com/support/docview.wss?uid=nas8N1010681
https://www.ibm.com/support/knowledgecenter/ssw_i5_54/cl/rmvptf.htm

PTFs are not a trivial topic, there is a whole manual on software maintenance, including PTF management:

https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzam8/rzam8pdf.pdf
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Gary PattersonVP Technology / Senior Consultant Commented:
-what is PSP and use of it?

Preventive Service Planning document.  IBM-supplied documentation used to plan PTF installation.
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Gary PattersonVP Technology / Senior Consultant Commented:
-How do we connect HMC to server? I mean how HMC will talk to all the Hardware?

Depends on the HMC.  On older systems, HMC is attached using a serial connection.  On newer hardware, it is Ethernet.

https://www.ibm.com/developerworks/community/wikis/home/wiki/Power+Systems/page/Hardware+Management+Console
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Gary PattersonVP Technology / Senior Consultant Commented:
-Do you have document to configure HMC from scratch?

Yes, IBM supplies complete documentation for HMC installation and configuration.  Specific instructions depends on your hardware ad software versions.  Here is an example:

https://www.ibm.com/support/knowledgecenter/POWER6/iphai/iphai.pdf
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Gary PattersonVP Technology / Senior Consultant Commented:
-Difference between capped and uncapped processor?
-what is processor pool and memory pool?

This IBM article explains various partitioning concepts, including capped/uncapped:

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Power+Systems/page/Virtualization+Concepts
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Gary PattersonVP Technology / Senior Consultant Commented:
-what is CPW and how do we calculate the CPW of our LPAR/server?

You don't calculate CPW - is is a specification.  

One good resource is the "Performance Capabilities" manual:

https://www-03.ibm.com/systems/resources/systems_power_software_i_perfmgmt_pcrm_feb2017.pdf

Also, here is another reference with historical values.

https://www.ibm.com/developerworks/community/blogs/6eaa2884-e28a-4e0a-a158-7931abe2da4f/entry/ibm_power_rperf_and_cpw_consolidated_data?lang=en
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Gary PattersonVP Technology / Senior Consultant Commented:
-How to check how much memory is being used currently? using WRKSYSACT?

IBM i OS generally utilizes all available memory in all but the most idle systems.  You can check the configured sizes of various memory pools:

https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzaks/rzakschkmemuse.htm

Work management. memory management, and performance are complex topics, and IBM i doesn't work like Linux or Windows.  Reading the Work Management guide is a good place to start:

https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_71/rzaks/rzaks1.htm
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Gary PattersonVP Technology / Senior Consultant Commented:
-In some point of time the ASP has been reached from 40 to 90, so how do we identify which object has been caused/saved?

It depends on what records, if any, you keep of disk space usage.  For that kind of growth, the most common causes are probably journal receivers (database log files, security audit log), database files, or spooled files.

Here is an article on ASP disk space management that might be useful:

http://www-01.ibm.com/support/docview.wss?uid=nas8N1019466
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Gary PattersonVP Technology / Senior Consultant Commented:
- What is MIMIX Application Group and Data group?

Data Group

The concept of a data group  is used to control replication activities. A data group is a logical grouping of database files, data areas, objects, IFS objects, DLOs, or a combination thereof that defines a unit of work by which MIMIX replication activity is controlled. A data group may represent an application, a set of one or more libraries, or all of the critical data on a given system. Application environments may define a
data group as a specific set of files and objects.  Data Groups are a list of objects grouped together for replication purposes, and may contain a single application, multiple applications, or an entire system.


Application Group

Application groups provide support for consolidating multiple data groups under one application group, which enables switching multiple data groups with one command

The name "Mimix" covers multiple products and versions.  The best source of information is the product User Guide and Reference for your version.  If you don't have them, you can obtain them from Vision Solutions.  It is generally a good idea to specify the particular product and version if you post questions.
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