Solution : https://service.sap.com/sap/support/notes/585277 (SAP Service marketplace login required)
Summary : 
      This SAP note provides guidance on performing a homogeneous system copy for SAP systems running on IBM eServer iSeries. Key points include detailing two primary system copy methods: the SAP R3Load/JLoad and the iSeries-specific SAVLIB/RSTLIB. While R3Load and JLoad cater to both homogeneous and heterogeneous system copies across all platforms, the SAVLIB/RSTLIB approach is suitable only for homogeneous copies on iSeries, facilitating system installation from a saved database library. The note also specifies prerequisites, such as ensuring the availability of the relevant Patch Collection and SAPinst compatibility. Additionally, it highlights procedural steps and critical post-installation checks to ensure system integrity, adhering to specific kernel releases and providing troubleshooting guidelines, notably in scenarios involving Java components.
Key words : 
savlib/rstlib methodiv post installation steps, sap web application server java 6, common homogeneous/heterogeneous system copy documentation, selecting database tool export option, call qsys2/qsqxrlf parm, optional exported sdm part, iv post installation stepsmake, property sapinst_use_hostname=<virtual host>, java part release nw04, dlt r3<sid>data
Related Notes : 
       
| 1620515 | System Copy for Systems Based on SAP NetWeaver 7.3 EHP1 | 
| 1490839 | OBSOLETE: Hom./Het.System Copy for Syst. Based on SAP NW 7.3 | 
| 1386639 | Hom./Het.System Copy for SAP NetWeaver based on Kernel 7.2 | 
| 1259011 | Hom./Het.System Copy for SAP Systems Based on SAP NW 7.11 | 
| 1238351 | Hom./Het.System Copy SAP NW 7.0 incl. Enhancement Package 1 | 
| 1120872 | Hom./Het.System Copy SAP NetWeaver 7.0 SR3 | 
| 1042437 | Hom./Het.System Copy for SAP NetWeaver Based on Kernel 7.10 | 
| 971646 | 6.40 Patch Collection Hom./Het.System Copy ABAP | 
| 971645 | 6.40 Patch Collection Hom./Het.System Copy Java | 
| 744055 | iSeries: Changing the default journal | 
| 717376 | iSeries: VM Settings for SAP WebAS Java (IBM Classic JVM) | 
| 708864 | iSeries: SAPinst kit for system copy of 620 Products | 
| 707805 | iSeries: Patches for SAPinst installation kits | 
| 516246 | INST: System Copy for SAP Systems based on SAP Web AS 6.20 |