System service definitions listed in Table 7-1 can be changed while restarting. The specified values of all other definitions not listed cannot be changed.

Table 7-1 System service definitions changeable upon restart

No.	Definition	Specified value	Allowable changes
1	System environment definition	mode_conf	C
		static_shmpool_size	C#1
		dynamic_shmpool_size	C#1
		shmpool_attribute	C
		user_command	C
		dcstart_wakeup_retry_count	C (when dcstart has not been executed)
		dcstart_wakeup_retry_interval	C (when dcstart has not been executed)
		putenv DCCONFPATH	C
		putenv DCUAPCONFPATH	C
		dcputenv DC CONFPATH	C
		dcputenv DCUAPCONFPATH	C
2	System common definition	all_node	C1
		nam_prf_trace_level	C
		fil_prf_trace_option	C
		fil_prf_trace_delay_time	C
		jnl_prf_event_trace_level	C
3	Lock service definition	lck_prf_trace_level	C
4	Name service definition	name_total_size	C2
		name_cache_size	C
		name_nodeid_check_message	C
		name_cache_validity_time	C
5	Process service definition	prc_process_count	C
		prc_recovery_resident	C
		prcsvpath	C
6	Schedule service definition	scd_hold_recovery_count	C (Only for change from or to 0)
		scd_hold_recovery	C
7	Status service definition	sts_initial_error_switch	C
		sts_single_operation_switch	C
		sts_last_active_file	C
		sts_last_active_side	C
8	Journal service definition	jnl_watch_time	C
9	System journal service definition	jnl_cdinterval	C
		jnl_rerun_swap	C
		jnl_arc_terminate_check	C
		jnl_auto_unload	C
		jnl_auto_unload_path	C
		jnladdfg	A
		jnladdpf	A
10	Log service definition	log_filesize	C
		log_msg_console	C
		log_msg_allno	C
		log_msg_prcid	C
		log_msg_prcno	C
		log_msg_sysid	C
		log_msg_date	C
		log_msg_time	C
		log_msg_hostname	C
		log_msg_pgmid	C
		log_netm_out	C
		log_netm_allno	C
		log_netm_prcid	C
		log_netm_prcno	C
		log_netm_sysid	C
		log_netm_date	C
		log_netm_time	C
		log_netm_hostname	C
		log_netm_pgmid	C
		log_audit_out	C
		log_audit_path	C
		log_audit_size	C
		log_audit_count	C
		log_audit_message	C
		putenv TZ	C
11	Transaction service definition	trn_rm_open_close_scope	C
		trn_optimum_item	C
		trn_processing_in_rm_error	C
		trn_recovery_list_remove	C
		trn_recovery_list_remove_level	C
		trn_watch_time	C
		trn_rollback_information_put	C
		trn_limit_time	C
		trn_rollback_response_receive	C
		trn_partial_recovery_type	C
		max_socket_descriptors	C
		trn_recovery_failmsg_interval	C
		trn_wait_rm_open	C
		trn_retry_interval_rm_open	C
		trn_retry_count_rm_open	C
		thread_stack_size	C
		polling_control_data	C
		groups	C
		trn_xa_commit_error	C
		trn_prf_event_trace_level	C
		trn_prf_event_trace_condition	C
		watch_time	C
		thread_yield_interval	C
		trn_start_recovery_mode	C
		trn_start_recovery_watch_time	C
		trn_start_recovery_interval	C
		trn_extend_function	C
		trnstring -m	C
		trnstring -r	C
		putenv	C#2
		dcputenv	C#2
12	XA resource service definition	xar_eventtrace_level	C
		xar_eventtrace_record	C
		xar_session_time	C
		xar_prf_trace_level	C
		xarfile	C
13	Global archive journal service definition	jnl_watch_time	C
14	Archive journal service definition	jnl_rerun_swap	C
		jnladdfg	A
		jnladdpf	A
15	User service network definition	dcsvgdef	C
16	RAP-processing listener service definition	rap_listen_port	C
		rap_parallel_server	C
		rap_watch_time	C
		rap_inquire_time	C
		nice	C
		uap_trace_max	C
		uid	C
		rpc_response_statistics	C
		rpc_trace	C
		rpc_trace_name	C
		rpc_trace_size	C
		trn_expiration_time	C
		trn_expiration_time_suspend	C
		trn_cpu_time	C
		trf_put	C
		trn_statistics_item	C
		trn_optimum_item	C
		trn_watch_time	C
		trn_rollback_information_put	C
		trn_limit_time	C
		trn_rollback_response_receive	C
		trn_partial_recovery_type	C
		rap_inquire_timeout_message	C
		rap_connection_assign_type	C
		rap_max_client	C
		rap_notify	C
		rap_client_manager_node	C
		rap_max_buff_size	C
		rap_io_retry_interval	C
		rap_sock_count	C
		rap_sock_interval	C
		rap_connect_retry_count	C
		rap_connect_retry_interval	C
		rap_listen_backlog	C
		rap_msg_output_interval	C
		rap_recovery_server	C
		rap_connect_interval	C
		rpc_extend_function	C
		max_socket_descriptors	C
		trn_completion_limit_time	C
		rap_message_id_change_level	C
		rap_term_disconnect_time	C
		rap_stay_watch_time	C
		rap_stay_warning_interval	C
		log_audit_out_suppress	C
		log_audit_message	C
		ipc_sockctl_highwater	C
		ipc_sockctl_watchtime	C
		watch_time	C
17	RAP-processing client manager service definition	rap_client_manager_port	C
		rap_listen_inf	C
		uid	C
		log_audit_out_suppress	C
		log_audit_message	C
		rap_watch_time	C
18	Performance verification trace definition	prf_file_size	C
		prf_information_level	C
		prf_file_count	C#3
		prf_trace_backup	C
19	XAR performance verification trace definition	prf_file_size	C
		prf_information_level	C
		prf_file_count	C#3
20	JNL performance verification trace definition	prf_file_size	C
		prf_file_count	C#3
		prf_trace_backup	C
21	LCK performance verification trace definition	prf_file_size	C
		prf_information_level	C
		prf_file_count	C#3
22	Real-time statistics service definition	rts_trcput_interval	C
		rts_service_max	C#4
		rts_item_max	C#4
		rts_log_file	C
		rts_log_file_name	C
		rts_log_file_size	C
		rts_log_file_count	C
		rts_log_file_backup	C
		rts_swap_message	C
		rtsput	C
23	User service default definition	watch_next_chain_time	C
		max_socket_msg	C
		max_socket_msglen	C
		rpc_response_statistics	C
		rpc_service_retry_count	C
		rpc_extend_function	C
		max_socket_descriptors	C
		max_open_fds	C
		watch_time	C
		rpc_destination_mode	C
		rpc_rap_auto_connect	C
		rpc_rap_inquire_time	C
		rpc_request_cancel_for_timedout	C
		service_expiration_time	C
		ipc_sockctl_highwater	C
		ipc_sockctl_watchtime	C
		ipc_conn_interval	C
		ipc_send_interval	C
		ipc_send_count	C
		ipc_header_recv_time	C
		rpc_send_retry_count	C
		rpc_send_retry_interval	C
		ipc_recvbuf_size	C
		ipc_sendbuf_size	C
		thread_yield_interval	C
		ipc_backlog_count	C
		rpc_buffer_pool_max	C
		message_buflen	C
		message_store_buflen	C
		trn_expiration_time	C
		trn_limit_time	C
		trn_cpu_time	C
		trn_completion_limit_time	C
		rap_autoconnect_con_error_msg	C
		rap_message_id_change_level	C
		log_audit_out_suppress	C
		log_audit_message	C
		mcf_prf_trace	C
		scdsvcdef	C
24	User service definition	watch_next_chain_time	C
		uid	C
		max_socket_msg	C
		max_socket_msglen	C
		rpc_response_statistics	C
		rpc_service_retry_count	C
		rpc_extend_function	C
		max_socket_descriptors	C
		max_open_fds	C
		watch_time	C
		rpc_destination_mode	C
		rpc_rap_auto_connect	C
		rpc_rap_inquire_time	C
		rpc_request_cancel_for_timedout	C
		service_expiration_time	C
		ipc_sockctl_highwater	C
		ipc_sockctl_watchtime	C
		ipc_conn_interval	C
		ipc_send_interval	C
		ipc_send_count	C
		ipc_header_recv_time	C
		rpc_send_retry_count	C
		rpc_send_retry_interval	C
		ipc_recvbuf_size	C
		ipc_sendbuf_size	C
		thread_yield_interval	C
		ipc_backlog_count	C
		rpc_buffer_pool_max	C
		message_buflen	C
		message_store_buflen	C
		trn_expiration_time	C
		trn_limit_time	C
		trn_cpu_time	C
		trn_completion_limit_time	C
		rap_autoconnect_con_error_msg	C
		rap_message_id_change_level	C
		log_audit_out_suppress	C
		log_audit_message	C
		mcf_prf_trace	C
		scdsvcdef	C
		putenv	C
		dcputenv	C
25	MCF performance verification trace definition	prf_file_size	C
		prf_file_count	C
26	System service information definition	mcf_prf_trace	C
27	System service common information definition	mcf_prf_trace_level	C

Legend:

C: Changeable

C₁: Changeable, but a valid value must be specified at restart.

C₂: Changeable, but the value to be specified must be calculated based on the number of service items to be registered in the system service and user server.

A: Additions only; deletions or updates are not allowed.

#1

Making the memory smaller could make a restart impossible.

#2

For the environment variable names and values that can be changed, see the resource manager specifications.

#3

When a small value is specified, the system controls trace files for only the latest generations, and as a result, trace files outside this range may remain unused. In this case, delete the files outside the range as needed.

#4

Increasing this value may prevent the real-time statistics service from starting.