Solution : https://service.sap.com/sap/support/notes/180605 (SAP Service marketplace login required)
Key words : 
hash_area_size                      sort_area_size 2hash_join_enabled                  truehash_multiblock_io_count            32log_archive_start                  truelog_buffer                          1048576log_checkpoint_interval             3000000000log_checkpoint_timeout              0´log_checkpoints_to_alert            truelog_simultaneous_copies             # cpus 2max_dump_file_size                  20000open_cursors                        800optimizer_index_cost_adj            < delete, note 128221hash_area_size                      sort_area_size 2hash_join_enabled                  truehash_multiblock_io_count            32log_archive_start                  truelog_buffer                          1048576log_checkpoint_interval             3000000000log_checkpoint_timeout              0log_checkpoints_to_alert            truelog_simultaneous_copies             # cpus 2max_dump_file_size                  20000, profile>optimizer_mode                      chooseoptimizer_percent_parallel          100parallel_broadcast_enabled          trueparallel_execution_message_size     16384parallel_max_servers                # cpus 2processes                          >, db_block_checkpoint_batch           >= 8db_block_lru_latches                # cpus 2db_block_size                      8192db_file_multiblock_read_count       32distributed_transactions            0, profile >parallel_max_servers                # cpus 8parallel_threads_per_cpu            1processes                          >, cpus 2db_block_size                      8192db_file_multiblock_read_count       32distributed_transactions            0, sort_direct_writes                  truesort_write_buffers                  4sort_write_buffer_size              262144star_transformation_enabled         true, ensure error-free database operation, numerous sap/oracle customer systems, ---------------------------         ------------------------------always_anti_join                    hashbitmap_merge_area_size              33554432b_tree_bitmap_plans                  < delete
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