Hi Pawel,

We do, indeed, duplex the Lock and SCA structures.  I am not able to
pull out the overhead of doing this but my feeling is that it is very
low.  We have two data sharing groups.  The SCA and Lock structures of
both are in one ICF and duplexed to the other ICF.  I highly recommend
doing this.

Mark Ediger
Acxiom CDC

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Pawel Leszczynski
Sent: Tuesday, December 11, 2007 10:21 AM
To: [email protected]
Subject: db2 lock structures duplexing

Hello everybody,
I've got a question to guys running DB2 in parallel sysplex environment.
Do you duplex DB2 lock structures i.e. _LOCK and _SCA structure?
What is the overhead connected with it?
In our 2-node PS environment we don't have stand-alnone CF, only
internal CF in two different footprints.
We want to avoid situation when damage of one of the boxes 
will bring the whole DB2 sharing group down.

Regards,
Pawel Leszczynski
PKO BP SA

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