About

Martin Klier

usn-it.de

Oracle on SLES12 SP2 – Avoiding Cgroup Task Limit

Once upon a time, there was an Oracle RAC cluster 12.2.0.1 on SUSE Linux Enterprise Server (SLES) 12 SP2, that did not do well. Its database and ASM instances used to fail with: ORA-27300: OS system dependent operation:fork failed with status: 11 ORA-27301: OS failure message: Resource temporarily unavailable ORA-27302: failure occurred at: skgpspawn3 Of […]

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Oracle 12.2 sysctl.conf Default Preinstall Settings

This are the currently active settings, the oracle-database-server-12cR2-preinstall.rpm delivers on Oracle Linux 7. Maybe it’s useful for you when setting up Oracle 12.2 on SUSE / SLES where you are on your own. Maybe you also want to add Huge Pages: # Performing Databases Huge Page Settings # for SGA size 200GB and huge page […]

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Oracle RAC 12.2 on SLES12 – How to disable Hardware Lock Elision Support

The Problem In the last week, I had to set up an Oracle RAC (and thus, the Clusterware) version 12.2.0.1 on SuSE Linux Enterprise Server 12 SP2 (SLES12 Sp2). The gridSetup.sh failed latest in root.sh of the first node with a kinda non-intuitive error: CRS-5804: Communication error with agent process CRS-4000: Command Start failed, or […]

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Chemnitzer Linux Tage 2015

Last weekend, I had the chance to attend the Linux Days Chemnitz. It’s an annual meeting of the German Linux family with roundabout 2,500 attendees and a FANTASTIC atmosphere. It was two days of hearing tech talks, enjoying rich nerd content and talkin’ shop. […]

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New German Linux Forum (forum.linux-talk.de)

In the last weeks, some folks were busy to build a new German Linux Forum “forum.linux-talk.de”, since the predecessor was systematically ruined by the commercial owners. Especially Jean (wdp) and Hendrik (Nilpferd) invested much time and money into building the new environment. So the new forum is completely free of ads and commercials, and the […]

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Oracle on Linux: How to hide your password when using a wrapper script

Sometimes, a DBA has to write an externally called wrapper script for various Oracle-supplied commands accepting password inputs. A prominent and simple example is SQL*plus (sqlplus). The Problem The process list shows all parameters of a command that’s currently executed. wrapper1.sh Accepts all connection infos on the command line: #!/bin/bash cmdstring=”sqlplus ${1}/${2}@${3}” echo “Executed command: […]

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Oracle Clusterware root.sh issue: USM driver install actions failed (oracleoks.ko)

As I already said in my last post about “Can’t install ohasd service“, setting up Oracle Clusterware 11.2.0.4 on SuSE Linux Enterprise Server (SLES) SP2 should work flawlessly, but sometimes it does not. 🙂 This time, it was about the USM drivers. USM driver install actions failed /u01/app/grid/11.2.0/perl/bin/perl -I/u01/app/grid/11.2.0/perl/lib -I/u01/app/grid/11.2.0/crs/install /u01/app/grid/11.2.0/crs/install/rootcrs.pl execution failed USM drivers […]

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