Download - Profile Maintenance and Operation Mode
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What is profile???
SAP profiles are operating system files that contain instance
configuration information. SAP systems can consist of one or more
instances. Individual configuration parameters can be customized to
the requirements of each instance.
The profile file is structured as follows:Parametername1 = Value1
Parametername2 = Value2
Parameter names that logically belong together have a common
root. For example, the parameters that control the dispatcher
within an application server have the root: rdisp/. The SAP profiles are stored in a special file directory.
UNIX systems:/usr/sap//SYS/profile
Microsoft Windows NT
systems:\\\sapmnt\\sys\profile\
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START Profile:When you start an SAP instance on a host, the start profile defines
which SAP services are started (message server, dialog, gateway or
enqueue process. for example). The startsap program is responsiblefor starting these service processes, and it uses a start profile to
begin the startup process.
Apart from the general profile parameters, such as the name of the
SAP System ( SAPSYSTEMNAME ), instance number ( SAPSYSTEM )and name of the SAP instance (INSTANCE_NAME ), the onlyparameter names that are permitted in a start profile are:
Execute_XX (XX: 00-99)
Start_program_XXX (XX: 00-99)
Stop_Program_XX (XX: 00-99)
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Default Profile:
If you want to assign the same parameter value for all application
servers (such as the name of the database host, or the host on which
the message server is running), enter it in the default profile. Ingeneral, you can list any parameter you like here.
SAP recommends that you use the following values:
Parameter Definition Parameter Name in Profile
Name of the database host SAPDBHOST
Name of the update server rdisp/vbname
Name of the enqueue server rdisp/enqname
Name of the server for handling background processing
eventsrdisp/btcname
Name of the computer on which the message server is
runningrdisp/msname
Name of the TCP service under which the message servercan be reached
rdisp/msserv
Name of the computer on which the SNA Gateway is
runningrdisp/sna_gateway
Name of the TCP Service under which the SNA Gateway
can be reachedrdisp/sna_gw_service
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Instance Profile:
Instance profiles provide an application server with additional
configuration parameters that complement the settings in
the default profile. Typically, these are parameter settings that areadapted to the instance according to the required resources and
applications. They also define the available instance resources (main
memory, shared memory, roll memory, and so on), and how to
allocate memory to the SAP application buffers. You can choose any name for an instance profile. The SAP naming
convention has the following
structure:_ or __
Eg: ECP_DVEBMGS12.
ECP_DVEBMGS12_host01
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Transaction code: RZ10
Importing Profiles:
When you first install an SAP System, upgrade to a new SAP release oradd a new application server, the system automatically generates orupdates SAP instance profile at operating system level. Unfortunately,the installation program cannot save these profiles directly to thedatabase. You must therefore import the SAP instance profiles before
you can then edited them.
Editing Profile:
There are two modes for editing profiles:
In basic mode, you can edit a set of parameters that are changedmost frequently. You do not need to know the technical parameter
names. Interdependent parameters are grouped together. If youchange a parameter, any parameters that depend on it are adjustedautomatically. The basic maintenance option displays general data onthe profile and the parameters for the buffer sizes, number of workprocesses and the swap requirement.
In extended mode, you can use a editing tool. You need to know thetechnical names of parameters and their dependencies. It displays all
individual parameter values for the profile.
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Creating New profiles:
To create a new profile manually: Call the RZ10. Specify the name of the profile that you want to
create and choose Create. The system creates the version numberautomatically. Enter a short description of the profile, the filename
into which the profile should be activated, a reference server and
the profile type. Then choose Copy. You can maintain parameters and
their values by flagging either Basic or Extended maintenance and
choosing Maintain.
Changing Profile Parameters: Call Transaction RZ10. Specify the name of the profile whose
parameters you want to change in the Profile field. If you want to
change the name of the file in which the profile should be activated,
checkAdministration data and choose Change. Once you have made
the changes, choose Copy. If SAP System profiles are importedautomatically, the system creates administration data automatically.
Maintain the most important profile parameters by checking Basic
maintenance and choosing Change. Once you have made the
changes, choose Copy. You can create, change or delete all
parameters in a profile by choosing Extended maintenance. Once you
have made the changes, choose Copy.
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Important Profile Parameters:
To check all the parameters name:tcode : sa38----> program name: rsparam---->Execute----> Execute.
Parameter Description Defaultvalue
sapsystemname System ID of 3 characters.
sapdbhost Name of Database server.
rdisp/mshost Message Server name.
Rdisp/enqname Instance that provide Enqueue service.
Rdisp/wp_no_dia Specifies no. of Dialog process. 2
Rdisp/wp_no_spo Specifies no. of Spool process. 0Rspo/host_spool/
print
OS command for printing.
Rdisp/wp_no_vb Specifies no. of Update process. 0
Rdisp/wp_no_btc Specifies no. of Background process. 0
Rdisp/wp_no_enq Specifies no. of Enqueue process. 0
Abap/buffersize Size of ABAP program buffer. 300000
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Rdisp/roll_maxfs Size of Roll area. Recommended/Default
Rdisp/pg_maxfs Size of Paging area. 16000
Ztta/roll_first Size of first allocated memory area
from roll area.
1
Ztta/roll_area Size of roll area (in bytes) 2,000,000
bytes for NT
Abap/heap_area_tot
al
Maximum heap process of all Work
Process.
8236842496
Login/fails_to_sessio
n_end
No. of permitted failed logon attempts
before SAPGUI closed.
3
Login/fails_to_user_l
ock
No. of permitted failed logon attempts
after which user will lock out.
12
Login/min_password
/lng
Minimum length of password required. 3
Login/system_client Default logon client. 200
Rslg/max_diskspace/local
Max size of file for local system log. 1000000
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You can define operation modes to suit specific system requirements, for
example, to provide additional dialog or background processing resources
during a particular period of time without having to restart the system. Operation modes define:
The number of work processes used for each service in the instance
The times that the services are available
Operation modes support:
24 hour uninterrupted system operation
Automatic switching of work process types
Switching Operation Modes
When operation modes are switched, the work processes are redistributedautomatically without stopping and restarting the instances.
Only the work process types are changed. For example, a work process
used as a dialog process can be switched for use as a background process.
Processing is not interrupted. Normal system operation continues
uninterrupted during the operation mode switch.
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Switching Operation Modes Automatically (RZ04)
Two ways:
Normal Operation: The time interval defined for Op mode arerepeated in 24 hours.
Exception operation: The time intervals defined for the operationmodes are activated once for a specified time period
Switching Operation Modes Manually (RZ03)
Call transaction RZ03. The system displays information about
operation modes and server status.
Choose Operation Mode. The system displays a list of defined
operation modes. Choose the operation mode that you want to switch to. You return to
the list of operation modes and servers.
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Step 1: Call transaction rz04
Step 2: Click on create
Step 3: Fill Operation Mode as day and give short description and Save.
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Step 4: Repeat Step 2 and Step 3 for Night Operation.
Step 5: Click on instance/Operation Mode
Step 6: Go to Settings based on current status Existing or New
instance.
Step7:Save
Step 8:Double click on defined on Operation Mode and adjust
Background Job and Save.
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Step9: Go to Operation Mode Timetable and select Normal or
Exception mode as per requirement and click on change.
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Step10: Select time interval and assign the operation mode.
Step 11:Select day and night operation Modes for particular time
interval and Save.
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