Recent Posts

July, 2012

  • 2 July

    Solaris 10’s Resource Management and Shell Limit(ulimit)

    Solaris 10’s Resource Management One of the best known features in Solaris is Resource management. This mechanism allows controlling resource for each and every process which is big advantage in system administration.System precious resources like CPU & memory also can be controlled by using projects and newtask feature. Resource Management:A resource controls are identified by following prefix1.  zone (Ex:zone.cpu-shares)2.  project (Ex:project.max-shm-memory)3. task …

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  • 1 July

    lucreate failed due to – Zones residing on top level of the dataset.

    Live-upgrade:Oracle Solaris 10 has come with ZFS and live-upgrade features to eliminate the down time for OS patching.But still this feature need lot of maturity in order to use in critical production environment.It has so many bugs and many restricted configuration setup. I would say oracle Solaris is completely moved to next generation OS patching method and its just need …

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June, 2012

  • 21 June

    how to take sun M-series XSCF snapshot

    Oracle SUN M-series has an new extended System Control Facility (XSCF) firmware with powerful console prompt. XSCF has its own processor to monitor the server hardware.Even though the server is down,XSCF will be always available until power supply coming to the server. When you are running XSCF snapshot,it will collect complete physical server information not with specific domains which you …

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  • 15 June

    Veritas cluster Agents (VCS agents)

    VCS agents: VCS agent use to communicate to the HAD (high availability daemon) with all the configuration and attributes.For an example, Mount agent should be able to monitor the filesystem and able to mount/umount the filesystem according to the given commands.  Agents are multi-threaded processes that provide the logic to manage resources. VCS has one agent per resource type. The agent monitors all resources of that …

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  • 15 June

    How to kill zombie process in solaris

    A zombie process or defunct process is a dead process that has completed execution but still it may be in the process table. Defunct processes are child processes that terminated. The process image in the kernel for that process is no more. It no longer exists. Defunct processes do not take up any CPU time, RAM or IO.The reason for still …

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  • 14 June

    Fork Error on Solaris SPARC/X86

    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 insufficient resources.It happens because poor system design where the “system load” vs “system configuration” are not well balanced.For an example, if the system memory …

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  • 14 June

    How to get SUN server serial number ?

    Are you breaking your head to find the Sun/oracle server serial number from Solaris operating system  ? Many times it is required to get support from hardware vendor and every time we can’t go back to look at the server builds books to find it. Here I am just sharing few tips to find the server serial number from Oracle Solaris. …

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