Posts Categorized: Oracle
So you have swallowed the standby bait. You have used RMAN duplicate to create a sparkling new standby and things are looking rosy. Then, when you check the lag between the primary and standby (in MAXIMUM PERFORMANCE mode), you discover the standby is miles behind. Oracle (at least from 9iG) rides to the rescue again. The parameter ARCHIVE_LAG_TARGET tells Oracle to make sure to switch a log every n seconds.
In this new installment of Pythian Goodies Doug Burns discusses Parallel Basics. This video is a good introduction to using Oracle Parallel features and most importantly, what problems you may have with it.
As usual, Oracle introduces new features, and we read the documentation about how they work and we start using them… but what about what is not in the documentation? That we find out by practice, experience, or accident. And that is exactly what happened to me today.
Last week, we discovered a bug related to the rollback of the Java DST patch for 9206 on Linux x86. If you’re in the unfortunate position of needing to roll this patch back, you won’t be able to. When you rollback, you need to restore both of these files, and then do a create or replace java system. Otherwise you risk hitting a dreaded ORA-03114 End of file on communication channel. Those of you familiar with DST patching will have seen this, but for those who haven’t, here are the scripts you need to check for a successful Java implementation:
Unfortunately, I’m too slow to blog about news and can never make it first. Today is no exception and Doug Burns has already posted about “one of the best Oracle Conferences of all times”: I can tell you – I’m so excited to see all those bright people presenting. It’s especially a pleasure to see that Doug (who recently joined my team here at Pythian) is presenting there.
Two weeks ago, I released a video about Flash Recovery Area as part of the Pythian Goodies project. Here is the next video in the sequence, Oracle I/O Basics.
Oracle CRS 10.2.0.3 patchset brings long awaited removal of previously required dependencies of databases and ASM instances on a VIP. Actually, 10.2.0.2 patchset lifted the requirement for dependency between ASM instance and VIP but not for database instances. In 10.2.0.2 this dependency wasn’t removed by default. For those who don’t know…
This is a follow up on my previous post about SYSDBA keeping invoker rights when calling PL/SQL procedure. Working on the previous test case a bit more I figured that the same anomaly is observed with triggers. So here is one way to get your PL/SQL code called by a SYSDBA. In this case you need to be able to create trigger on database, i. e. need privileges ADMINISTER DATABASE TRIGGER and CREATE TRIGGER.
Oracle CRS 10.2.0.3 patchset changed the logging of missed heartbeats by CSS. Here is example how heartbeats misses are logged in ocssd.log in 10.2.0.3:
Over-the-Top Tales from the Trenches: Bringing order to the chaos of every day DBA life. Ever heard this during a recovery of a downed database? The poor thing has either a minor scratch, requires immediate attention, or is dead on arrival (DOA).
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