When you are planning an upgrade or update to a higher SAP release, you have always been advised to test carefully and check SAP Notes for potential additional resources that may be required for the new release. For example, SAP Note 1974405 explains that you may need 5 to 10 percent more CPU resources when upgrading to SAP ERP Central Component 6.0 EHP7. However, SAP recently got feedback from customers, that the additional CPU resources may exceed that in some cases. These customers have experienced longer response times after upgrading to a release that contains SAP_BASIS at release 7.40 and a kernel at release 7.40 or higher (for example by upgrading to SAP ERP Central Component 6.0 EHP7).
Compared to release 7.2x, the SAP kernel has undergone major changes in 7.4x, in particular in the area of memory management and process communication. To get the best performance from this kernel, SAP has put together SAP Note 2098347 with a list of recommendations, among them:
SAP Note 1387644 recommends setting the profile parameter SETENV_xx = LDR_CNTRL=DATAPSIZE=64K@TEXTPSIZE=64K@STACKPSIZE=64K@SHMPSIZE=64K for the operating system AIX. For the operating system IBM i, no significant improvement was noticed as a result of setting this parameter. Therefore, we do not recommend setting this parameter. If you still want to set the parameter, make sure that the PTFs 5770999-MF59805 for IBM i 7.1 or 5770999-MF59810 for IBM i 7.2 are applied.
If additional settings that help the overall performance of the 7.4x kernel are identified, SAP will update SAP Note 2098347. Please always reference the note to get the latest information.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
User | Count |
---|---|
40 | |
25 | |
17 | |
14 | |
8 | |
7 | |
7 | |
7 | |
6 | |
6 |