system hung

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check if the process is Hung?

I wish to monitor if my Tomcat process if Running, Hung, or Shutdown. I cannot use any third party monitoring tools so i decided to use one of these to test if the tomcat server is responding or not . 1. nslookup 2. telnet 3. ps The reason I do not use wget / curl is because it will...

2. Solaris

Hung ILOM - e2900

While trying to perform a firmware upgrade on this ilom, the system refused to allow uploading of more than ~900k or so... We tried multiple approaches using FTP and all failed. I decided to start this morning by firing up Apache on another box and trying the same process via HTTP but when I went...

3. Red Hat

How to find the process which is caused system hung state?

when system is hung state due to swap, we will reboot it through ILO. i want to know which process caused system hung.

4. HP-UX

ssh session getting hung (smilar to hpux telnet session is getting hung after about 15 minutes)

Our network administrators implemented some sort of check to kill idle sessions and now burden is on us to run some sort of keep alive. Client based keep alive doesn't do a very good job. I have same issue with ssh. Does solution 2 provided above apply for ssh sessions also?

5. Programming

Subroutine Hung

Hi friends I am Administrator for a system works with uinx OS but, many times I get messages from server console inform me about Subroutine is Hanging so what can I do to reset this Subroutine? Note: always when I got that I restart the server but I think that is not professional solution.

6. Shell Programming and Scripting

Monitoring for a hung process

A coworker has a shell script that runs from a scheduler at the 3am. The shell script runs sqlplus passing in a sql statement, which generate a file. This is done 21 times for 21 different sql statements. Recently, one of the sqlplus processes got hung. Is there a way to monitor how long the...

7. HP-UX

Hung Port

Here's a difficult one for you. I am on HPUX 11.0. I have a hung port, it is stuck in FIN_WAIT_2. Short of rebooting, how can I terminate the connection the system thinks still exists? I found a script online that uses adb but have not been able to get it to work. I am still open to using...

8. HP-UX

Server hung

So my server was hung when I came in this morning. It was responding to pings, but the console and telnet sessions would not respond. There was no disk activity. The display said FA1F which I discovered that the "A" represents a high CPU load. I tired several things to get it going but was forced...

9. Solaris

SUN is hung/dead

What do you do if the system will not respond to commands? I'm using SUN Fire v210. We had a power hit, so i think it caused a problem. The monitor does not come up anymore. So i plugged in on a laptop via serial port, rebooted. The system seems to start to boot, but comes up to message "SC...

10. UNIX for Dummies Questions & Answers

SCSI bus is hung

Anyone have any ideas what could be causing me to get the error "The SCSI bus is hung. Perhaps an external device is turned off"? This is occuring when I try to boot off of my external CDROM. I have tried this CDROM on 3 different systems, tried different SCSI cables, and different terminators...

LEARN ABOUT HPUX

tcphashsz

tcphashsz(5)							File Formats Manual						      tcphashsz(5)

NAME

       tcphashsz - determines the size of the networking hash tables

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
       A  value  of  0	(default) will adjust the in proportion to the number of cores in the system.  If is set to a non zero value, it should be
       specified as a power of two.  Otherwise, it will be rounded down to the nearest power of two.

DESCRIPTION

       This variable is used to set the size of the networking hash tables.  HP recommends that the value of be set to 0 so that  the  system  can
       choose  an  optimal  value.   A	system	that  is going to have a large number of connections on it all of the time may see some benefit of
       increasing this value, beyond the number determined by the system.

       If this tunable is not set to zero, then it needs to be a power of two.	If it is not specified as a power of two, then it is rounded  down
       to the nearest power of two.  If this tunable is set in the range of 1 to 255, then it will be increased to 256.

   Who Is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect at the next reboot.

   When Should the Value of This Tunable Be Raised?
       This value may be raised in the case of a machine with a large number of connections that last for an extended period of time.

   What Are the Side Effects of Raising the Value?
       More memory is used when this value is raised.

   When Should the Value of This Tunable Be Lowered?
       If a system is tight on memory and it has just a few connections on it, then lowering the value may reclaim some memory.

   What Are the Side Effects of Lowering the Value?
       If is set too low, the system will have long hash chains which will slow it down.

   What Other Tunables Should Be Changed at the Same Time?
       None.

WARNINGS

       All  HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases of
       HP-UX.

       Installation of optional kernel software, from HP or other vendors, may cause changes to tunable  parameter  values.   After  installation,
       some  tunable  parameters may no longer be at the default or recommended values.  For information about the effects of installation on tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

							     Tunable Kernel Parameters						      tcphashsz(5)

IP Networking