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Memory Parameter


We have SAP on HP-UX.

While tuning the memory parameters, I read the documentation of em/max_size_MB in RZ11.

It says -

Limitations for operating systems:
Parameter is only valid for Windows NT

So, is this not valid in HP-UX?

We have set em/initial_size_MB = 4096

But the limit for em/initial_size_MB is also 8GB.

How do I set the maximum size of Extended Memory in HP-UX beyond 8GB?


Actually, em/initial_size_MB can go up to 1 TB.

Read [Note 835474 - More than 32 GB extended memory|] and [Note 146289 - Parameter Recommendations for 64-Bit SAP Kernel|] for further information.

Since you're using HP-UX make sure you read [Note 172747 - SAP on HP-UX: OS kernel parameter recommendations|] too.


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