SAPFPAR - ***ERROR: Maximum shared memory segment size exceeded

[Former Member]

Hi Experts,

We're currently in the process of migrating our systems, so I've taken the opportunity to run sappfpar check pf= <instance profile>.

This profile contains the parameter values that we ultimately wish to run on our new host.

However, the output of sappfpar highlights one error:

***ERROR: Maximum shared memory segment size exceeded

================================================================

Shared memories exceeding size limit

Key: 6 Size: 1224704000 (1168.0 MB) ABAP program buffer

SOLUTIONS: (1) reconfigure your operating system for shared memory

segment size of 2048.0 MB minimum

(2) configure smaller SAP buffers

I don't want to decrease this program buffer value, as it has been tuned correctly - and if anything, I would want to increase it over time.

So, the question is:

How do I increase the maximum shared memory segment size (Windows 2008).

Thanks for your help,

Chris W

[Former Member · Accepted solution]

Hi,

After reviewing this situation, I don't think that there is an actual problem.

It appears that there is an issue with the sappfpar software, displaying an out of date warning regarding address space.

We are running Windows 2008 that fis 64bit and therefore the warning doesn't apply in this case.

In our case, there have not been any adverse performance issues as a result of setting a large memory segment size.

Chris

[Former Member]

Hi Chris,

ALL you have to do is take the program buffer out of pool and then restart the app it will do.

Thanks,

Sanjay

[Former Member]

Hello,

Did you solve this error?

Regards,

Abhilash

[Former Member]

Hi, can you post your profile parameter's кelated to memory management ?

As you have win2008 i think you use 64 bit version , on 64 bit version are not have restrictions as 32 bit in Shared Memory ,

Try to read

Note 146289 - Parameter Recommendations for 64-Bit SAP Kernel

Regards.