GET DATABASE MANAGER MONITOR SWITCHES command

The GET DATABASE MANAGER MONITOR SWITCHES command displays the status of the database system monitor switches that are currently active. Monitor switches instruct the database manager to collect database activity information.

Each application using the database system monitor interface has its own set of monitor switches. A database system monitor switch is ON when any of the monitoring applications has turned it ON. This command is used to determine what data the database system monitor is currently collecting. It is possible that more data is being collected than is specified in the default monitor switches that are set in the database manager configuration because an application has a switch set to ON in its view.

Scope

This command is issued on the currently attached member and, by default, returns information only for that member. In the case of multiple members per host, the currently attached member is the first member that is listed in the db2nodes.cfg file on that host.

To issue the command for a specific member that is not the currently attached member, specify the ATTACH_MEMBER parameter. To issue the command for all members and receive an aggregated result, specify the GLOBAL parameter.

To change the currently attached member, issue the SET CLIENT command with the ATTACH_MEMBER parameter . You must issue the DETACH command followed by the ATTACH command from your application for this change to take effect.

Authorization

One of the following authorities:
  • SYSADM
  • SYSCTRL
  • SYSMAINT
  • SYSMON

Required connection

Instance or database:
  • If there is neither an attachment to an instance, nor a connection to a database, a default instance attachment is created.
  • If there is both an attachment to an instance, and a database connection, the instance attachment is used.

To display the settings for a remote instance, or for a different local instance, it is necessary to first attach to that instance.

Command syntax

Read syntax diagramSkip visual syntax diagramGET DATABASE MANAGERDB MANAGERDBM MONITOR SWITCHESAT MEMBERmember-numberGLOBAL

Command parameters

AT MEMBER member-number
Specifies the member for which the status of the database manager monitor switches is to be displayed.
GLOBAL
Returns the status of the database manager monitor switches from all members.

Examples

The following is sample output from GET DATABASE MANAGER MONITOR SWITCHES:

            DBM System Monitor Information Collected            

Switch list for member number 1                                                                
Buffer Pool Activity Information (BUFFERPOOL) = ON   06-11-2003 10:11:01.738377                                     
Lock Information                       (LOCK) = OFF             
Sorting Information                    (SORT) = ON   06-11-2003 10:11:01.738400                                     
SQL Statement Information         (STATEMENT) = OFF             
Table Activity Information            (TABLE) = OFF             
Take Timestamp Information        (TIMESTAMP) = ON   06-11-2003 10:11:01.738525
Unit of Work Information                (UOW) = ON   06-11-2003 10:11:01.738353

Usage notes

The recording switches BUFFERPOOL, LOCK, SORT, STATEMENT, TABLE, and UOW are OFF by default, but can be switched ON using the UPDATE MONITOR SWITCHES command. If any of these switches are ON, this command also displays the time stamp for when the switch was turned ON.

The recording switch TIMESTAMP is ON by default, but can be switched OFF using UPDATE MONITOR SWITCHES. When this switch is ON, the system issues timestamp calls when collecting information for timestamp monitor elements. Examples of these elements are:
  • agent_sys_cpu_time
  • agent_usr_cpu_time
  • appl_con_time
  • con_elapsed_time
  • con_response_time
  • conn_complete_time
  • db_conn_time
  • elapsed_exec_time
  • gw_comm_error_time
  • gw_con_time
  • gw_exec_time
  • host_response_time
  • last_backup
  • last_reset
  • lock_wait_start_time
  • network_time_bottom
  • network_time_top
  • prev_uow_stop_time
  • rf_timestamp
  • ss_sys_cpu_time
  • ss_usr_cpu_time
  • status_change_time
  • stmt_elapsed_time
  • stmt_start
  • stmt_stop
  • stmt_sys_cpu_time
  • stmt_usr_cpu_time
  • uow_elapsed_time
  • uow_start_time
  • uow_stop_time

If the TIMESTAMP switch is OFF, timestamp operating system calls are not issued to determine these elements and these elements will contain zero. Turning this switch OFF becomes important as CPU utilization approaches 100%; when this occurs, the CPU time required for issuing timestamps increases dramatically.

Compatibilities

For compatibility with previous versions:
  • DBPARTITIONNUM or NODE can be substituted for MEMBER, except when the DB2_ENFORCE_MEMBER_SYNTAX registry variable is set to ON.