HP BA322 90087 - Manual (Page 223)

The last command causes the booting to continue.
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.
B.7 Halt and Shutdown Procedures
The following sections describe halt and shutdown procedures for Integrity servers and OpenVMS
Integrity servers.
B.7.1 Halting the Integrity servers 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 tc
command. 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 rs command.
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
B.7 Halt and Shutdown Procedures 223