Solution : https://service.sap.com/sap/support/notes/584952 (SAP Service marketplace login required)
Key words : 
> fenced_pool         >= 5> num_initfenced       = 0> indexrec             = restart> tm_database          = 1st_conn             [cust]> resync_interval      = 180                  [cust]> spm_name             =                      [cust]> spm_log_file_sz      = 256                  [cust]> spm_max_resync      = 20                   [cust]> spm_log_path         =                      [cust]> svcename            = sapdb2<dbsid>        [cust]note, ]> fcm_num_buffers      = 4096                 [cust]> fcm_num_rqb          = automatic            [cust]> fcm_num_connect      = automatic            [cust]> fcm_num_anchors      = automatic            [cust]> conn_elapse          = 10                   [cust]> max_connretries      = 5                    [cust]> max_time_diff        = 60                   [cust]> start_stop_time      = 10                   [cust] database configuration parameters, [cust]> sysadm_group          = db<dbsid>adm> sysctrl_group         = db<dbsid>ctl> sysmaint_group        = db<dbsid>mnt> authentication        = server_encrypt      [cust]> catalog_noauth        =, ]> applheapsz           >= 3072> pckcachesz           >= 5120> stat_heap_sz         >= 15000> dlchktime            = 10000              [cust]> maxlocks              = 90                 [cust]> locktimeout          = 3600               [cust]> chngpgs_thresh        = 20                 [cust]> num_iocleaners       >= 1note, jdk>       [cust]> diaglevel             = 3> notifylevel           = 3> diagpath        = /db2/<dbsid>/db2dump         [os=unix]  diagpath        = <drive>, > dft_refresh_age       = 0> dft_mttb_types        = system> num_freqvalues        = 10> num_quantiles         = 20> dl_expint             = 60> dl_wt_iexpint         = 60> dl_num_copies         = 1> dl_time_drop          = 1> dl_upper              =, > indexrec               = restart> dft_loadrec_ses        = 1                 [cust]> num_db_backups        = 12                [cust]> rec_his_retentn        = 60                [cust]note, [cust]> tp_mon_name          = <empty>             [cust]> dft_account_str      = <empty>             [cust]> jdk_path              = <path, > instance_memory       = automatic> backbufsz            = 1024                [cust]> restbufsz            = 1024                [cust]> agent_stack_sz       >= 64                  [os=windows], > aslheapsz             = 16> rqrioblk              = 65000> query_heap_sz        >= 2000> util_impact_lim      = 10                  [cust]> agentpri              = system> maxagents            >= 1024> num_poolagents        = <
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