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Former Member
May 10, 2010 at 09:21 AM

SAP Extended memory on iSeries


Hello, last week, checking a system with performance problems, I detected the customer has the parameter em/initial_size_MB (extended menory), in my opiniion, too high

The history of the parameter shows that the maximum ext. mem. reached is quite lower than the size of em/initial_size_MB parameter

Some colleages in Spain say it is not a problem, because SAP doesn't lock the extended memory not used, so the iSeries can use it

I'm not sure because if my colleages are true, then we always should give a very high value to em/initial_size_MB

SAP version is ECC 6.0 and iSeries version is V6R1

Does the parameter em/initial_size_MB lock or reserve the memory so the iSeries can't use it?

I've read oss 808.607, but I don't see my question clearly answered

Thanks in advance, Ximo Escobedo,

IBM Spain