HP OpenVMS 8.x manual Halt and Shutdown Procedures

4.At the DCL prompt, the system now accepts startup commands directly from the console. Enter the following two commands. These commands allow a normal system startup while you are left logged in on the console. Without the SPAWN command, you are logged out when the startup completes.

$ SPAWN

$ @SYS$SYSTEM:STARTUP

5.Once you log out of this session, the system completes the startup and can be used normally. Optionally, you can choose to reboot the system.

Example

SYSBOOT> SET/STARTUP OPA0: SYSBOOT> SET WINDOW_SYSTEM 0 SYSBOOT> SET WRITESYSPARAMS 0 SYSBOOT> CONTINUE

$ SPAWN

$ @SYS$SYSTEM:STARTUP

$

NOTE: Instead of using the SET/STARTUP OPA0: command in emergency conditions, you can set the UAFALTERNATE system parameter to use the alternate authorization file rather than the standard user authorization file. Setting the system parameter UAFALTERNATE defines the logical name SYSUAF to refer to the file SYS$SYSTEM:SYSUAFALT.DAT. If this file is found during a normal login, the system uses it to validate the account and prompts you for the user name and password.

HP does not recommend this method. If an alternate SYSUAFALT.DAT file has been configured on your system, the UAFALTERNATE method will likely fail (assuming you do not know the password for the privileged account stored within the SYSUAFALT.DAT file). In addition, the OPA0: system console is critical to system operations and system security and allows access when the SYSUAF system authorization database is unavailable or corrupted; when core product license PAKs are not registered, are expired, or are disabled; and in various system failures.

A.7 Halt and Shutdown Procedures

The following sections describe halt and shutdown procedures for Integrity servers and OpenVMS I64.

A.7.1 Halting the Integrity Server to Recover from Hangs and Crashes

If your system hangs and you want to force a crash, you can use MP, if available. Use the

tccommand. Confirm your intention when prompted. The tc command forces a crash dump. You can reset the machine (without forcing a crash) by using the MP rscommand.

For cell-based servers, when you enter the tc or rs command, you are first prompted to select the partition for which you want the operating system shut down.

Alternatively, when the operating system controls the console, press Ctrl/P. The next step taken by the system depends on whether XDELTA is loaded:

•If XDELTA is loaded, the system enters XDELTA after you press Ctrl/P. The system displays the instruction pointer and current instructions. You can force a crash from XDELTA by entering ;C, as in the following example:

$
Console Brk at 8068AD40
8068AD40!	add	r16 = r24, r16 ;; (New IPL = 3)
;C

•If XDELTA is not loaded, pressing Ctrl/P causes the system to enter the IPC facility. Pressing Ctrl/P within the utility brings the “Crash? (Y/N)” prompt. Enter Y to cause the system to crash and to bring you eventually to EFI. If you enter any other character, the system returns back to the IPC facility.

184 Configuring OpenVMS I64 Hardware Operation and Boot Operations, and Booting and Shutting Down Your System