Solution : https://service.sap.com/sap/support/notes/905614 (SAP Service marketplace login required)
Key words :
form -loadprocedure fast loadcompress, db2 supports data compression, standard mode internally, r3load automatically loads, r3load switches back, -loadprocedure fast compress, option remains ineffective, decfloat data types, optimal compression rate, attribute compression='r'
Related Notes :
1156514 | DB6: Possible data loss during system copy of SAP BI |
1058437 | DB6: R3load options for compact installation |
988087 | DB6: Buffered insert in "R3load -loadprocedure fast" |