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Oracle Solaris Administration: Common Tasks     Oracle Solaris 11 Information Library
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Document Information

About This Book

1.  Locating Information About Oracle Solaris Commands

2.  Managing User Accounts and Groups (Overview)

3.  Managing User Accounts and Groups (Tasks)

4.  Booting and Shutting Down an Oracle Solaris System

5.  Working With Oracle Configuration Manager

6.  Managing Services (Overview)

7.  Managing Services (Tasks)

8.  Using the Fault Manager

9.  Managing System Information (Tasks)

10.  Managing System Processes (Tasks)

11.  Monitoring System Performance (Tasks)

12.  Managing Software Packages (Tasks)

13.  Managing Disk Use (Tasks)

14.  Scheduling System Tasks (Tasks)

15.  Setting Up and Administering Printers by Using CUPS (Tasks)

16.  Managing the System Console, Terminal Devices, and Power Services (Tasks)

17.  Managing System Crash Information (Tasks)

18.  Managing Core Files (Tasks)

19.  Troubleshooting System and Software Problems (Tasks)

20.  Troubleshooting Miscellaneous System and Software Problems (Tasks)

What to Do If Rebooting Fails

What to Do If You Forgot the Root Password or Problem That Prevents System From Booting

What to Do If a System Hang Occurs

What to Do If a File System Fills Up

File System Fills Up Because a Large File or Directory Was Created

A TMPFS File System Is Full Because the System Ran Out of Memory

What to Do If File ACLs Are Lost After Copy or Restore


What to Do If a System Hang Occurs

A system can freeze or hang rather than crash completely if some software process is stuck. Follow these steps to recover from a hung system.

  1. Determine whether the system is running a window environment and follow these suggestions. If these suggestions do not solve the problem, go to step 2.

    • Make sure the pointer is in the window where you are typing the commands.

    • Press Control-q in case the user accidentally pressed Control-s, which freezes the screen. Control-s freezes only the window, not the entire screen. If a window is frozen, try using another window.

    • If possible, log in remotely from another system on the network. Use the pgrep command to look for the hung process. If it looks like the window system is hung, identify the process and kill it.

  2. Press Control-\ to force quit the running program and (probably) write out a core file.

  3. Press Control-c to interrupt the program that might be running.

  4. Log in remotely and attempt to identify and kill the process that is hanging the system.

  5. Log in remotely, become root and then reboot the system.

  6. If the system still does not respond, force a crash dump and reboot. For information about forcing a crash dump and booting, see Forcing a Crash Dump and Reboot of the System in Booting and Shutting Down Oracle Solaris on x86 Platforms.

  7. If the system still does not respond, turn the power off, wait a minute or so, then turn the power back on.

  8. If you cannot get the system to respond at all, contact your local service provider for help.