Error Fork Not Enough Space
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Fork Not Enough Space Solaris 10
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space" 3 replies Latest Post - 2009-01-08T10:15:50Z by CRM Display:ConversationsBy Date 1-4 of 4 Previous Next ragh 270000SNDK 5 Posts Pinned topic "fork: Not enough space" 2009-01-05T06:53:49Z | Tags: check swap space solaris Answered question This question has been answered. Unanswered question This question has error 12 not enough space solaris not been answered yet. We are running weblogic product tests on AIX boxes. While running tests at some point
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test is going to hung mode and after that if user type any command its giving error "fork: Not enough space". Its clear that issue is with memory and we https://community.hpe.com/t5/Networking/sshd-1363-error-fork-Not-enough-space/td-p/4604527 use to hard reboot the machine to resolve this problem. With respect to this problem I have couple of questions. 1. At this type of situation even root user can't execute any commands at console, is there any way we can set some limit to user process,? at least it should allow root user to run the command. Note: when I run https://www.ibm.com/developerworks/community/forums/thread.jspa?threadID=238866 "ulimit -Ha" command ( on two servers I am getting below o/p for "max user processes") max user processes (-u) 262144 ---( On one server) max user processes (-u) 128 --- ( On another server) So I am not getting meaning of these two because our test goes to hung mode on both server approx at same point. Log in to reply. Updated on 2009-01-08T10:15:50Z at 2009-01-08T10:15:50Z by CRM SystemAdmin 110000D4XK 6902 Posts Re: "fork: Not enough space" 2009-01-06T09:49:14Z This is the accepted answer. This is the accepted answer. Hi ragh, First of all check your Paging Space using lsps -a, it should be nearly 1.5 to 2 times of your physical memory (RAM). Increase Paging Space by smitty chps if required. We get a fork error when memory usage is exceeded, try and reduce the traffic/requests on client side (if any) moving to server and the server will let you login or do activities after some time without rebooting. Ya....seems that you need to set your limits to "unlimited" status. Set all options under default column as -1 under /etc/secu
vC OPS VMware SDDC VMware vSphere 5.x vSphere Network vSphere DS vShield Suite VMware vSphere 6.0 VSAN Tutorials VXVM-Training ZFS-Tutorials NetApp cDot LVM Cisco UCS LDOM Oracle VM for x86 http://www.unixarena.com/2012/06/fork-error-on-solaris-sparcx86.html VXVM Man Page Oracle Solaris Oracle SuperCluster Exadata Solaris 10 Live upgrade Solaris Migrations Zones ZFS VXVM VCS Solaris11 Solaris 11.2 IPS-Solaris11 Solaris Cluster Solaris kernel zones Solaris Networking Redhat-Linux http://www.unix.com/solaris/132579-releasing-swap-space-solaris.html How to Articles Q&A Networking RHEL7 Download E-Books Virtualization Trend Hadoop & Big data Cloud Networking Tips & Tricks Advertise Contact Me Patners Vembu Home / Solaris 10 / Fork not enough Error on Solaris SPARC/X86 Fork Error on Solaris SPARC/X86 Solaris 10 In Solaris ,we may encounter a fork error issue very often if the system is not tuned well.Some times due to poor application configuration, system may not able to allocate the resource or system will end-up with insufficientresources.It happens because poor system design where the "system load" vs "system configuration" not enough space are not well balanced.For an example, if the system memory is full,thenkernelcan't create a new process/thread withouthaving enough free memory space.You can see the fork error messages on /var/adm/messages file. Possible Causes for fork error issue: 1. /tmp may be full 2. Swap space may be full 3. System reached max NLWP . 4. Insufficient File descriptor (ulimit -a) 1.Check /tmp is full or not bash-3.00$ df -h /tmpbash: fork: Resource temporarily unavailable# exec df -h /tmpFilesystem Size Used Avail Use% Mounted on/dev/mapper/rootvg-tmplv 3.9G 144M 3.6G 4% /tmp 2.Swap space If the system didn't get enough room to create a new process then system will log fork errors on the /var/adm/messages.Check the swap space using prstat ,top,swap -s commands and find out what are the processes are consuming more virtual memory. 3.Checking NLWP, Find the current NLWP use,(NLWP-Number of light weight process) #ps -ef -o nlwp|grep -v NLWP|awk '{ sum += $1 } END { print sum}' If you have Solaris zones,its better have zone wise NLWP output. Script to find the NLWP per zone, #for i in `z
known simply as Solaris, is a Unix-based operating system introduced by Sun Microsystems. The Solaris OS is now owned by Oracle. Search Forums Show Threads Show Posts Tag Search Advanced Search Unanswered Threads Find All Thanked Posts Go to Page... learn linux and unix commands - unix shell scripting Releasing the swap space Solaris Solaris Thread Tools Search this Thread Display Modes #1 03-20-2010 Paarth Registered User Join Date: Mar 2010 Last Activity: 5 March 2014, 9:39 PM EST Posts: 22 Thanks: 1 Thanked 2 Times in 2 Posts Releasing the swap space Solaris Hi Guys ! I have found this problem many times that the swap space (/tmp space more precisely )of my Server becomes full specially when i run a complete back up of the server . once the /tmp space is full I am not able to run simple commands as i get error like : fork no space on checking df -hk , i could see that /tmp space which is also the swap space becomes full . on checking /tmp directory i could see there was nothing in that , thus i realized that this was due toh the long activity of backup done before and the server is not releasing this space . In order to release this space i rebooted the system and the /tmp space was empty and probelm was fixed . Can anybody suggest any other way of releasing the /tmp space ? I am using Solaris 10 . Remove advertisements Sponsored Links Paarth View Public Profile Find all posts by Paarth #2 03-20-2010 jlliagre ɹǝsn sɹɐlos Join Date: Dec 2007 Last Activity: 11 October 2016, 7:34 AM EDT Location: Outside Paris Posts: 4,769 Thanks: 18 Thanked 579 Times in 516 Posts /tmp being full is likely only a side effect, not the root cause. Either there is a memory leak in your backup software or your swap is undersized. Are the backup processes finished when the problem occurs ? Remove advertisements Sponsored Links jlliagre View Public Profile Find all posts by jlliagre #3 03-20-2010 Paarth Registered User Join Date: Mar 2010 Last Activity: 5 March 2014, 9:39 PM EST Posts: 22 Thanks: 1 Thanked 2 Times in 2 Posts Earlier problem only used to occur after the backup was complete . Currently i am not backing up the server but the /tmp is be