Solution : https://service.sap.com/sap/support/notes/593582 (SAP Service marketplace login required)
Key words :
/oracle/client/81x_<bits>/lib tools linked, /oracle/client/81x_<bits>/lib, /oracle/client/92x_<bits>/lib, /usr/lib/pa20_64/dld, dbatl<release>o81_<suffix>, dbatl<release>o92_<suffix>, 1 -> dbatl<release>o81_<suffix>, 2 -> dbatl<release>o92_<suffix>, correct oracle client software, oracle client libraries installed
Related Notes :
521230 | FAQ: Client software 9i or lower on UNIX |
180430 | Installing the ORACLE client software for UNIX |
12741 | Current versions of BR*Tools and SAPDBA |