Solution : https://service.sap.com/sap/support/notes/1049390 (SAP Service marketplace login required)
Key words :
index rowid coss index range scan coss~0in oracle 9, index rowid coss index range scan coss~1 table access, index rowid coss index range scan coss~0 table access, index rowid coss index range scan coss~0, concatenation inlist iterator table access, optimizer merge fix reason, current optimizer merge fix, shows significantly lower costs, table access, sapnet note 981875 oracle 9
Related Notes :
| 992261 | Optimizer merge fix for Oracle 9.2.0.8 |
| 981875 | Optimizer merge fix for Oracle 10.2.0.2 |