You can enter DB2 Server for VSE & VM operator commands in multiple user mode only. When you enter an operator command, a completion message or an error message is always given.
You can enter any DB2 Server for VSE operator command from the system console.
More than one application server can be running at the same time. Each application server has its own operator console, the DB2 Server for VM operator console. The user who operates this console is the DB2 Server for VM operator.
You access the operator console by logging onto the application server. The operator uses this console to perform I/O operations (such as archives and archive restores), and to monitor the operation of the application server.
When more than one application server is active, you can have more than one DB2 Server for VM operator. VM facilities, however, allow one person to operate more than one application server. For example, you can operate many application servers by running the virtual machines disconnected. You can reconnect to the various machines as required. You can also use the VM Single Console Image Facility and the programmable operator facility to run more than one application server from a single operator console.
If you want to have the VM system console serve as the DB2 Server for VM operator console, use the existing VM facilities. After initialization, disconnect the database machine and route console communications to the VM system console (or any other virtual machine) using the Single Console Image Facility (SCIF). For information on disconnecting from the database machine, see Disconnecting the Application Server. For additional information on the SCIF, refer to the VM/ESA: Planning and Administration If you are a VM/ESA user, see the VM/ESA CP Planning and Administration for 370 or VM/ESA: Planning and Administration manual.
To use SCIF, the VM directory console control statement for the database machine must identify a virtual machine as the secondary user to receive DB2 Server for VM messages. See the VM/ESA: Planning and Administration manual for more information about the console control statement.
The system operator can enter DB2 Server for VSE & VM commands by entering the CP SEND command. See the VM/ESA: CP Command and Utility Reference for information on the CP SEND command.
You can enter any operator command from the DB2 Server for VM operator console. After initialization finishes, a message is issued indicating that it is ready for operator communications. At this point, you can enter any appropriate DB2 Server for VM operator command. Whenever the application server has processed an operator command, it issues a message indicating that processing is complete, and then the next operator command can be processed.
If you stack commands, they must be valid DB2 Server for VM operator commands or responses. The application server treats any unexpected response (because of an incorrectly ordered stack) as an incorrect command or message reply. The application server continues reading and processing stack entries until there are no more entries in the stack. To stack commands, type the LINEND character, usually #, between each command on the same command line. For example, to stack the SHOW SYSTEM, SHOW POOL, and SHOW USERS commands, enter the following:
show system#show pool#show users |
You can use the CP command Q TERMINAL to determine your setting of the LINEND character.
The DB2 Server for VSE product provides an optional component called Interactive Structured Query Language (ISQL) that allows CICS terminal users to access an application server. ISQL uses CICS for terminal control and runs as a CICS transaction.
A user can enter the SHOW and COUNTER operator commands in ISQL. You use these commands to monitor system performance; this chapter describes them.
The ISQL SHOW and COUNTER commands can be used when the target application server is either a local or a remote DB2 Server for VSE & VM application server. For information on using ISQL, consult the DB2 Server for VSE & VM Interactive SQL Guide and Reference manual.
The DB2 Server for VM product provides a component called Interactive Structured Query Language (ISQL) that allows CMS terminal display users to access an application server. The ISQL facility runs as an application of CMS.
Terminal display users can enter the SHOW and COUNTER operator commands through the ISQL facility; you use these commands to monitor system performance. While you can enter the SHOW and COUNTER commands from the operator console when you are using DRDA protocol, you cannot use them with the ISQL facility. The DB2 Server for VSE & VM Interactive SQL Guide and Reference manual explains the ISQL facility.