About

Martin Klier

usn-it.de

Oracle 12c InMemory – don’t stop thinking about performance

Oracle has released its new database version 12.1.0.2 that includes the famous in-memory column store. InMemory option  promises a big advantage for OLAP-like work loads by keeping table contents in a columnar in-memory structure. InMemory is not new, they did that for decades, but the interesting part is “columnar”. There’s much writing about that on […]

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Oracle 12.1.0.2 with In Memory Option available for Linux

As of today, the Oracle Database 12.1.0.2 with InMemory Columnar Store is available at https://edelivery.oracle.com. According to the price list of July 10th, it will be sold as an option for Enterprise Edition (Exadata NOT mandatory), for US$ 23,000 per CPU (calculation like EE). Hope it will do well, beta demos were extremely impressive. Yours […]

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Oracle Core für Einsteiger: Datenbank I/O at DOAG 2014

Proud to announce, that DOAG accepted my tech talk “Oracle Core für Einsteiger: Datenbank I/O” for DOAG Conference 2014 in Nuremberg. It’s my next contribution to DOAGs thread aiming at beginners and part-time database people. The talk will be in German, here comes its abstract: Oracle Core für Einsteiger: Datenbank I/O Wir kennen verschiedene I/O-Typen, […]

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Oracle SQL Developer: New window, new session. Bad behavior?

Yay, it’s there. SQL Developer 4 is usable. It brings a new session for a new window (“unshared worksheet” in Oracle terms) – I was told lately SQL Developer 3 already had this. Did you know? Now we are kind of stable in 4: The 4.0.2 build 1521 (hehe) works good, so it’s time to […]

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Oracle 11.2 PSU2 Grid Infrastructure stack start … failed to complete at crsconfig_lib.pm line 11814

Oh, sometimes it’s just (own or close-people’s) PEBKAC that costs you time and gray hair… Patching 11.2.0.4.x to PSU2 on Linux was such an issue. Problem “opatch auto” with all comfort worked well, applied the patch, but re-starting the clusterware failed with: Starting CRS… Installing Trace File Analyzer CRS-4123: Oracle High Availability Services has been […]

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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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Slides for COLLABORATE 2014 IOUG forum talk #C14LV

Hi folks, here’s my slides for “YOUR machine and MY databases – a performing relationship?!” at Collaborate 2014 Las Vegas. Any feedback is greatly appreciated! 2014_141_Klier_odp_v1 2014_141_Klier_v1_doc Some pictures to come soon! You may want to follow the #C14LV hashtag to see what’s going on. 🙂   […]

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Oracle Dataguard: ORA-00600 [krsu_upi_atc.7] – crash when primary ships the first time

After setting up a new Oracle Dataguard system (primary plus one standby DB), everything looked promising. But after activating the log shipping from primary, and after archiving a redo log for the first time, the primary instance crashed with ORA-00600 [krsu_upi_atc.7]. Without the standby system available (DB idle or listener off), no error occurred. ****************************************************************** […]

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