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Thursday, October 9, 2014

Exadata 11.2 Support

Попался  хороший документ:

page 6:
Oracle Database 11gR2:The Extended Support fee has been waived for the period of February 2015 – January 2016. During this period, you will receive Extended Support during these periods as described in the Oracle Technical Support Levels section below.

Oracle Exadata Storage Server Software 11.2 (program releases and above): The Extended Support fee will be waived from October 2014 – September 2015.

Что это значит: 
на 1 год продлена не Premier поддержка, а Extended поддержка освобождена от дополнительной оплаты в +10%. 
Т.е. Extended вступает в силу с января 15 года в любом случае.

For DB 11.2 - until January 1
For Storage Server Software - until September 2015.

Tuesday, October 7, 2014

timed out waiting for input: auto-logout

I connected to db node of Exadata and after some idle time I was disconnected from server with the message:

[root@ed02dbadm02 ~]# timed out waiting for input: auto-logout

Connection closed.

As I remember my terminal can stay connected to Exadata all day, many hours.  
Whats the matter ? It is something new ...

Internet explain this behaviour:

Auto-Logout Timeout in SSH

The ssh "timed out waiting for input: auto-logout" messages is generated by ssh upon reaching a auto-logout after an inactivity time specified by the TMOUT environment variable. If this variable is not set your session will not be auto-logged out due to inactivity. If the environment variable is set, your session will be automatically closed/logged out after the amount of seconds specified by the TMOUT variable.

To see if your auto-logout variable is set and/or see what it is set to issue the following command:
 $ echo $TMOUT

Often this value is defined in /etc/profile (globally) or your user's profile (~/.profile or ~/.bash_profile).

To alter the auto-logout amount, set the TMOUT environment variable accordingly:
* TMOUT=600   #set an auto-logout timeout for 10 minutes
* TMOUT=1200  #set an auto-logout timeout for 20 minutes
* TMOUT=   #turn off auto-logout (user session will not auto-logout due to session inactivity)

This value can be set globally (e.g. TMOUT=1200) in the /etc/profile file;

Monday, October 6, 2014

Exadata X5-2

Прошел OpenWorld но Х5-2 так и не появилась.
Тем не менее в продолжение предыдущей темы

В августе Seagate выпустил 8Т-диски.А Hitachi делает 10Т.

В общем, ответ на вопрос какие диски будут стоять в Экзадате Х5 - практически очевидный.
В 1/4 будет где-то от 36*8 до 36*18 = 280-350 Т сырой емкости.

Wednesday, September 24, 2014

Hard Drive Reliability Statistics

In Russian:

Tuesday, September 16, 2014

Is it good idea to connect production and standby Exadatas by Infiniband ?

Some time ago I used to think that the two Exadatas (production and standby) is better to bind by IB.
But from now i think otherwise:

"Primary and standby databases should NOT reside on the same IB Fabric"

Oracle Sun Database Machine Setup/Configuration Best Practices (Doc ID 1274318.1)