Category Archives: High-Availability

RAC, Clusterware, DataGuard, services.

How to install ASMLIB from Oracle’s public YUM

There are several ways to get ASMLIB, we can download it from the OTN here, or we can download it from from ULN (Unbreakable Linux Network). Also it comes in the the Unbreakable Linux media, but if you are not … Continue reading

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Exadata workshop – impressions and notes

I have read articles and specs on Exadata before, but now I have had the opportunity to assist to an Exadata Hands-On workshop. I’m writing these impressions without talking too much about the specs, they are everywhere, some links here. … Continue reading

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Commonly used srvctl commands

What is srvctl? it is the Server Control Utility, we use SRVCTL to start and stop the database and instances, manage configuration information, and to add, move or remove instances and services. These are some of the srvctl commands I … Continue reading

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OMS does not understand the timezone region of the agent – solved!

Hi, I was having problems starting up the management agent (10.2.0.5) in a RedHat 5 Linux, I was constantly getting the following error: 2009-12-15 19:19:47,406 Thread-1317072 WARN diagnostics.cpu: nmegam_ActivityManager_init: per-thread cpu usage not available for this platform 2009-12-15 19:19:50,251 Thread-1317072 … Continue reading

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ORA-00119: invalid specification for system parameter LOCAL_LISTENER

I was practicing in virtual machines a hardware/OS upgrade for an Oracle 10G RAC and when I was starting up the database I got this error: SQL> startup nomount ORA-01078: failure in processing system parameters ORA-00119: invalid specification for system … Continue reading

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Oracle Unveils Exadata Version 2: The First Database Machine for OLTP

The new Exadata 2, full with the SUN branding on it now brings new technology like theĀ  Sun FlashFire cards: “Exadata Smart Flash Cache addresses the disk random I/O bottleneck problem by transparently moving hot data to Sun FlashFire cards. … Continue reading

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RAC nodes reboot themselves randomly after upgrade to 10.2.0.4

RAC nodes reboot themselves randomly after upgrade to 10.2.0.4 due to a new process called OPROC. Continue reading

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