on 05-24-2010 9:17 PM
I have been trying to find a list of production like parameters setting for ITS like CPIC connection and gw parameters like gw/max_overflow_size, CPIC_MAX_CONV etc etc.
We have a large number of connection into the gateway and want to make sure it is sized accordingly.
I checked not 316877 however it is only relevant for WAS 6.20.
Thanks
Weyland Yutani
Hi Weyland,
This is more a Netweaver-related question rather than an ITS-related one.
You can increase the profile parameter gw/max_sys. This parameter specifies the max. number of clients connected at a time. From the documentation there is no specific maximum mentioned:
Limitations for database systems: None
Limitations for operating systems: None
However, if you increase the setting of gw/max_sys to a higher value you should also increase the parameter gw/max_conn with the same value.
You need also review the timeout and keepalive parameters - gw/cpic_timeout and gw/keepalive. These parameters are used to make sure that the connections do not remain connected for too long but also do not get disconnected too quickly.
gw/cpic_timeout
Determines the maximum wait time during connection setup. The wait time must not exceed the interval defined by the parameter (in seconds). Otherwise the connection is terminated with a timeout.
gw/keepalive:
Specifies the maximum time period (in seconds) before the system checks, using a ping, whether the partner is still alive when there is no data transfer across a CPI-C connection.
You can go to the gateway monitor smgw, use GOTO -> show parameter, mark an entry and press the F1 button to get an explanation of the parameter. This will tell you what the dafault values are and give you a better explanation.
Try increasing the gw/max_sys and gw/max_conn with the same value, also please review the other above mentioned parameters.
You can also review SAP note 314530 - Number of RFC/CPIC connections for external client
Then ensure that the environment variable CPIC_MAX_CONV is set to an appropriately high level (2000) on ALL servers in this landscape.
I hope this information helps.
All the best,
Cristiano
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How do I do the following?
Set the env variable CPIC_MAX_CONV to 5000 in the .login profile file located in the home folder of <sid>adm.
I have tried everything and still get 100 max conversation error from Loadrunner scripts
Thanks
Weyland Yutani
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Thanks for the information. I do have additional question?
Where do I set this variable:
"Then ensure that the environment variable CPIC_MAX_CONV is set to an appropriately high level (2000) on ALL servers in this landscape."
I run unix so do I set it in .sapenv_host.sh and csh scripts?
thanks
Weyland Yutani
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Hi Weyland,
Yes, updating the scripts should do the trick.
All the best,
Cristiano
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Thanks for the information. I do have additional question?
Where do I set this variable:
"Then ensure that the environment variable CPIC_MAX_CONV is set to an appropriately high level (2000) on ALL servers in this landscape."
I run unix so do I set it in .sapenv_host.sh and csh scripts?
thanks
Weyland Yutani
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