Platform compatibility checks during Upgrade & Unicode conversion projects.
Sometimes the approach for Upgrade & Unicode conversion project dependents on platform compatibility. I recently came across such situation & thought of sharing this with everyone.
If you are planning to perform Upgrade, OS/DB migration & Unicode conversion from existing SAP R/3 4.7 to ERP 6.0, the below mentioned approaches will come to your mind.
The approach will change if you find below scenario
Source system –
SAP – R/3 4.7
OS – UNIX
DB – Informix
Environment – Non Unicode
Target System –
SAP – ERP 6.0 EhP4
OS – Linux
DB – DB2
Environment – Unicode
In the above situation you are left with only one option that is two step approach, as Informix database is not compatible with ERP 6.0 environment (refer http://service.sap.com/pam for more information). You may combine both the steps in single downtime window, provided your DB size is less & you have bigger downtime window.
The approach will further change if the source environment is on SAP R/3 4.6C, as we will not able to combine the OS/DB migration along with Unicode conversion (SAP R/3 4.6C is not Unicode compatible). In such scenario you may need to perform the platform migration first & in second step perform CU&UC.