November 2009 Blog Posts (4)

Which is best ORACLE SCM or CRM

Hi,

I want to know about oracle SCM, soon i am going to learn this course. could you guys help me in this regard. which is best CRM or SCM. Eagerly waiting for your guidance.

Added by farooq on November 24, 2009 at 8:45am — 2 Comments

New Series of Articles on SQL Access Path Tuning

Just a quick note from your friendly ex-Oracle instructor...



I'll be publishing a 10 or 12 article series on SQL access path tuning. The first article discusses how we need to become "database performance scientists" and provides some hints and tips on the selection or creation of our test lab environment. The second article (coming next week) will show how easy it is to… Continue

Added by Chris Foot on November 18, 2009 at 11:48am — 3 Comments

Archiving In RAC Database.....?

Hi Friends,
How to enable archiving in a RAC Database in oracle 10g..?
i am working on 2 node clusters.
I am having some confusion...please help me in this issue.?
Waiting for your great Reply..

Thanks
Bhupendra

Added by Bhupendra Singh Koranga on November 15, 2009 at 9:00pm — 2 Comments

How to investigate with "ROW CACHE LOCK"

Database had the problem and found "ROW CACHE LOCK"

Top 5 Timed Events Avg %Total

~~~~~~~~~~~~~~~~~~ wait Call

Event Waits Time (s) (ms) Time Wait Class

------------------------- ------------ ----------- ------ ------ ----------

row cache lock 509,761 1,259,315 2470 71.8 Concurrenc



I found out event in v$session before check in v$rowcache... and resolved

Example:…

Continue

Added by Surachart Opun on November 8, 2009 at 4:42am — No Comments

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Blog Posts

Database hang and Row Cache Lock concurrency troubleshooting

This post will help to analyze Oracle database instance slowdown that can happen due to considerable row cache lock (enqueue) wait events. It’s is based on a real case of a database hang that I worked on recently. I must admit this type of situation does not appear often but it’s very dangerous since it can considerably slow down a database instance or even freeze it for a short period of time. In most cases SQL against ASH view and Systemstate dumps can help to nail down the problem unless…

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Posted by Kirill Loifman on April 15, 2014 at 12:53am

Creating standby database fast and easy

1.PURPOSE AND SCOPE

With 11gR2 rman duplication its really easy to create standby database.

2.PRACTICE

Information

Primary Database SID: PRIM

Primary Database Domain/IP: ABSO

Standby Database SID: PRIM_SBY

Standby Database Domain/IP: CROO…

Continue

Posted by Bugra Canbakal on April 3, 2014 at 10:30pm

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