Solution : https://service.sap.com/sap/support/notes/72638 (SAP Service marketplace login required)
Key words :
$oracle_home/bin/lsnrctl stop $oracle_home/bin/lsnrctl start 2, file ~ftp/general/3rdparty/oracle/all_os/protocol, file ~ftp/general/3rdparty/oracle/all_os/protocol, delay sending half-empty tcp packages, 3/bug395122 ~ftp/general/3rdparty/oracle/hp_ux/7, 3/bug330388 ~ftp/general/3rdparty/oracle/aix/7, ~ftp/general/3rdparty/oracle/hp_ux/7, ~ftp/general/3rdparty/oracle/aix/7, ~ftp/general/3rdparty/oracle/solaris/7, ~ftp/general/3rdparty/oracle/dec_unix/7
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