Solaristm 10 patching best practices course reference. The swap command provides a method of adding, deteting and monitoring the swap areas used by the kernel. According to this document, 16gb must suffice, but the dba insists that the swap space must be twice the ram now, heres the special part, this is an oracle db running inside a solaris 11 zone, which in turn is running on a sparc t54 with 512gb of ram. You certainly can get out of swap space with free ram still available. Boot process failed and system goes back to ok prompt. The reserved area of the disk is called swap space. For you information,from solaris 11 onward,zfs will be the default root filesystem.
I do not have the top command available and neither prstat nor swap seem to be able to provide information about how much swap space a given process is using. Adding swap space on a solaris system oracle solaris. Hello all, ive been having a discussion with our dba regarding the swap space requirements for oracle database running on solaris. For example rejuvenated kernel patches associated with solaris 10 update releases such as 11883336 sparc 11885536 x86, 12001114 sparc 12001214 x86, etc. Java project tutorial make login and register form step by step using netbeans and mysql database duration. Remove the entries related to svm from the etcsystem file. Jan 26, 2016 in the patch system test lab, we currently have solaris 10 systems with 7gb used in var and this will continue to grow over the lifetime of solaris 10. Creating a new boot environment with the lucreate command. It applies to solaris 10, but it deals with adding swap space to a zfs disk and should be valid for solaris 11. Although i can use showrev p, and get individual patch information, i cant find a quick, easy or consistent way to determine which cluster was last installed. The swap partition should not be added to the initramfs by the initramfs update script if the swap partition does not exist. Sun microsystems solaris jumpstart technology is used to automate the installation of the solaris operating system and other associated software on multiple nodes of.
Solaris 10 os patching using liveupgrade unixarena. Make more swap space available to perform the install. If we install from scratch, it is called initial installation, or we can upgrade solaris 7. Page space physical volume volume group size %used active auto type. Appendices list the product packages, the required patches, and the. To create a permanet swap are you need to add in the etc vfstab file. For information on mounting a file system, see mounting and unmounting oracle solaris file systems. Or, if the swap space is on a separate slice and you are sure you will not need it again, make a new file system and mount the file system. There were a total of 24 solaris 10 patches, including kernel updates, and 4 patchsets released on mos. Premium content you need an expert office subscription to comment. There are two kind of swap that can be configured on the solaris system. Since im only using this box as a desktop i really dont need the 768mb of swap space i have 768mb of main memory.
Oracle db on solaris utilizing swap memory when free ram available. Recover the disk space so that you can use it for something else. Solaris 10 extended support will run thru january 2021. Examining how much memory is being used and how much is free has always been a source of confusion in the solaris environment. Releasing the swap space solaris 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. This figure describes the commands for the solaris live upgrade process. These patches are the sun recommended patches for solaris 10 frozen from may 14th, 2010. Now you should modify the partition table and extend your main filesystem if you want to reclaim the unused space. By default, if run without any option or operand, pca shows a list of all patches which are not installed in their most recent revision. Jul 03, 2012 solaris os patching has been moved far away from the traditional methods from solaris 10 onwards. Find answers to how to extend swap space in solaris 10 from the expert community at experts exchange. Removing patches from zone nt4 removing patches from zone sfw removing patches from global zone removing patch idr14836326. Which command can analyze the patch requirements of a system and. How to add swap space to solaris zone without reboot.
Modify your swap space by configuring your linux machine. How to safely turn off swap permanently and reclaim the. Removing a swap file from use system administration. The only caveat is that i am running the 32 bit version of solaris 10, which has a limitation on maximum swap size of 2 gb. For example, if you were to patch a solaris 10 305 system with the latest recommended patch cluster, many of the patches relate to functionality introduced after solaris 10 305, and therefore, patches with the new functionality would fail to install. So i needed more swap space, but didnt have any more space on the current disk. If you have a solaris system that badly needs more swap but you dont have a free swap device available, you can create a file in the file system and add it as additional swap. A systems virtual memory is a combination of ram and disk space. If there is insufficient space in var of an existing system, the recommended solution is to extend the size of the var partition. H ow do i add swap space under solaris opensolais unix operating systems. Bu solaris has a very elegant idea of linking swap space and tmp.
Scsa 200 and scsa 202 exam material included with clear explanation package administration in solaris 10. Which file needs an entry to in order for the extra swap space to be available. Adding swap space on a solaris system oracle solaris studio. Always recommend to remove the additional swap from vfstab and reboot the server.
Solaris opensolaris add swap file last updated may 24, 2010 in categories solarisunix. The factory preinstall images provided on sun equipment now contain space. This is not the only but it is one of the method to modify your swap space in. How to add new swap in solaris 10 on fly unixarena.
These two factors often give rise to confusion and misinterpretation of the data, especially when queried via snmp. If you are using solaris 10 or later, system parameters are not in etcsystem anymore. This is good for speed, but not so good on a general purpose box where some applications may fill up tmp. Whenever you increase your ram, computer experts always suggest us to increase the swap accordingly because it is always beneficial to increase your swap space accordingly so that your linux machine perform smoothly even for memoryintensememory consuming operations and applications which consume more memory. Welcome to the patching documentation center oracle. Find answers to how to remove the solaris 10 sparc patch. We no need to bring down the server to single user mode if you are using live upgrade method during pathing and b efore choosing live upgrade,make sure you are using zfs as a root filesystem. This book is for anyone responsible for administering one or more systems that run the oracle solaris 10 release. Unlike most if not all unixunix like variants, swapon isnt the solaris way. In other words tmp in solaris is memory based filesystem and files in it disappear on reboot. Oracle db on solaris utilizing swap memory when free ram. That is what is does but given that on solaris the swap space also includes a portion of the physical memory, its less useful than you might think.
Unknown said i am trying to find a good way to determine which patch cluster is installed on a solaris 10 system. Starting with the oracle solaris 10 1009 release, you can install and boot the oracle. This procedure applies only to solaris 10 servers that have no zones or boot environments configured. Once thats done, swap should be disabled and not come back on the next boot. Scsa 200 and scsa 202 exam material included with clear explanation. Portions of the virtual memory are reserved as swap space. Not enough space solaris 10 by default places tmp on swap. Remove the entries related to svm from the etc system file. In above example, swap l command used to check the existing swap size space, you can use top command as well but using top command you can not find which swap named file are in used.
This is straight out of the man pages, but i had a hard time finding it the first time that i needed it. Is there any way i can reduce the swap space to 128mb and reclaim the space onto devhdb3 without destroying the contents of it. Device swap is assigning a dedicated partition for swap, and file swap is creating a file through mkfile command and adding it to the swap space, see the output of df gh coomand, which kind of swap it is, and then you can. Reserving swap just exhausts the disk based swap area for no reason and should not be doing this at all. May 18, 2017 how to increase a swap space on solaris server. Swap space is used as virtual memory storage areas when the system does not have enough physical memory to handle current processes. This can lead to trouble, run out of physical ram, and new processes may not. To remove the added disk from swap space use the following command. Swap area changes made from the command line are not permanent and are lost after reboot.
I had an interesting discussion with 2 colleagues about the possible interest of putting the swap space of a system on a ssd. Table 43 general disk space and swap space planning. As a first step, download the recommended patch cluster from the my oracle support mos site. This article describes the process of applying a solaris recommended patch cluster, or patchset as it is now called. Remove old patches january 26, 2016 this document tells you how to recover space in var, which is used for patch backout data. Solaris swap space and virtual memory softpanorama. In the patch system test lab, we currently have solaris 10 systems with 7gb used in var and this will continue to grow over the lifetime of solaris 10. As a workaround,we will add additional swap space to avoid the system hungpanic.
Partition tag flags sector count sector mount directory. Remove a patch from a solaris operating system my sysad. Class action scripts that install and remove service manifests are included in the. Removing a swap file from use system administration guide. It also gives instructions on installing the required operating systems patches. 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.
How to apply a solaris recommended patch cluster solaris. The other option is to add some swap space either by adding more raw disk space or else using the swapon1m command to make a swapfile in a volume with spare space although that is not as quick as real swapfs swap space. It is reserving swap on an operating system where swap and ram are combined into one virtual memory pool. Usually we can identify a memory shortfall by watching the system swap space usage. These patches are the sun recommended patches for solaris 10. Swap space adding and removing in solaris 10 blogger. Oct 26, 2012 h ow do i check swap page usage under sun oracle solaris unix operating systems using command line options. If i consider the gain in latency that an ssd brings versus a capacity disk in the region of 100x the solution seems obvious. There must be enough swap for all virtual memory reservations to fit.
Solaris os patching has been moved far away from the traditional methods from solaris 10 onwards. Monitoring ram and swap solaris 9 system monitoring and. Force unmount of a swap filesystem left over from bad live upgrade. The image packaging system, pkg5, is a framework that provides for software lifecycle management such as installation, upgrade, and removal of packages. May 24, 2010 solaris opensolaris add swap file last updated may 24, 2010 in categories solarisunix. When you are planning disk space, remember that you can add or remove individual.
All transitioning between ram and swap is handled by the solaris os itself. Sometimes due to applications,system may in to memory bottle neck. Or even better, how can i list all running processes sorted by swap space usage. If yes create new slice and follow the standart route, otherwise you can create file mkfile command and add it as swap, but the best solution is to. I would like to know what the size of the swap partition on the hard drive is and am concerned that these numbers are including physical memory in their calculations. You need to login as root and type the following commands. You can add the swap space as follows under solaris unix operating systems. Using the luactivate command to activate the new boot environment or fallback to the original boot environment.
It applies to solaris 10, but it deals with adding swap space to a zfs disk and should be valid for. Edit the etcvfstab file and delete the entry for the swap file. H ow do i check swap page usage under sun oracle solaris unix operating systems using command line options. Im having a tough time understanding swap space on solaris 10. Why youre monitoring solaris virtual memory wrong logicmonitor. Nov 23, 2009 i had an interesting discussion with 2 colleagues about the possible interest of putting the swap space of a system on a ssd. Swapping or more precisely paging must be much faster with an ssd. The swap file name is removed so that it is no longer available for swapping. Applying patches to the new boot environment with the luupgrade command. Do you want to see how future patch architecture is changing. How to add swap space to solaris zone without reboot unix.
Then delete your swap partition, remove it from etcfstab, and regenerate your initramfs and grub maybe unnecessary. My question is should i need to increase the swap space. Oracle solaris os software and application software can use some disk space for temporary storage rather than for file systems. Allocating disk and swap space oracle solaris 10 811 installation. We no need to bring down the server to single user mode if you are using live upgrade method during pathing and before choosing live upgrade,make sure you are using zfs as a root filesystem. See configuring swap for the newboot environment in solaris 10 1008 installation. How to use solaris live upgrade to install patches oracle.
How do i see virtual memory statistics including used and total swap space. Pca is a perl script which generates lists of installed and missing patches for oracle solaris systems and optionally downloads and installs patches. This can lead to trouble, run out of physical ram, and new processes may not start. Solaris unix supports various command to get the information about swap space. Using solaris jumpstart with the solaris 10 os for x86x64. Using solaris jumpstart with the solaris 10 os for x86x64 platforms. Im trying to find out a way to display the latest patches installed in a solaris box. On modern hardware with 32gb memory or more swap space is rarely used for its primary purpose. Which file on solaris 10 software cdrom 2 contains the software required to create a. Patching best practices for the solaris 10 os docdeveloppement. Removing patches from nonglobal zones removing patches from zone crisco removing patch idr14836326. That means that it is important for solaris administrators to understand the features of the solaris swap. Mar 14, 2007 unknown said i am trying to find a good way to determine which patch cluster is installed on a solaris 10 system. If you fill tmp, you essentially reduce the amount of available swap to 0.
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