Solution : https://service.sap.com/sap/support/notes/118059 (SAP Service marketplace login required)
Summary : 
      This SAP Note addresses issues related to the R3load process for system copies, database migration, or installation. It details how to manage R3load parameter files, such as changing storage parameters and table importing sequences to optimize tablespace utilization. Errors like ORA-1658 or ORA-1631 are discussed with solutions involving adjusting tablespace sizes or extent configurations. Users are cautioned to make changes only with proper expertise, and details on command files and parameters (.cmd, .dat, .icf, etc.), their formats, and recommendations for safe modifications are provided. Handling of database-independent and dependent structure files is also explained.
Key words : 
appl0   psapstabd      0000              appl1   psapbtabd      0000              appl2   psappoold      0000              clust   psapclud       0000              pool    psappoold      0000              sdic    psapddicd      0000, categorie    primary    secondary    age            buffer      tabkat      space      space        freespace      pool                  allocation  allocation, appl0 stab  appl1 btab  appl2 pool  clust clu  pool  pool, appl0 psapstab       appl1 psapbtab       appl2 psappool       clust psapclu       pool  psappool, structureora-1658 ora-1630 str tpl ext 001 002 ddl ora mss inf db2 db4 db6, 0  0000000016k  0000000040k  0001  0300              1  0000000016k  0000000160k  0001  0300              2  0000000016k  0000000640k  0001  0300              3  0000000016k  0000002560k  0001  0300for, menu option                        system -> open system -> gen-tools -> submenu, <load_dir>/data/ bs=1k fs=2000m          << remainsdir, <load_dir>/data/ bs=1k fs=2000m      << bleibtdir, table      size      size    minimum    maximum        categorie  initial
Related Notes : 
       
| 769476 | Poss. inconsistencies after termination of export processes | 
| 709389 | Problems during load of SAPVIEW | 
| 123546 | Extending the permitted size categories | 
| 101216 | INST: 3.1I R/3 Inst. - Heterogeneous System Copy | 
| 101215 | INST: 3.1I R/3 Inst. - Homogeneous System Copy | 
| 86860 | INST: 4.0A/B R/3 Inst. - Heterogeneous System Copy | 
| 86859 | INST: 4.0A/B R/3 Inst. - Homogeneous System Copy | 
| 73272 | ORA-01658 in database import | 
| 46272 | Implement new data class in technical settings |