[erlang-questions] Mnesia table replication

Dana.RUBINO <>
Mon Nov 17 12:18:02 CET 2008

Thanks Chandru,

I guess I just wanted a way to verify that any process on nodeB for example would be reading from a RAM copy and not one on disk.

If a ram copy is definitely created on the node where each disk copy is stored then its not a problem.

Thanks for the help.


From: Chandru [mailto:]
Sent: 17 November 2008 11:13
Subject: Re: [erlang-questions] Mnesia table replication

Hi Dan,

2008/11/17 <<mailto:>>
Hi all,

Is it possible to have two nodes with each node containing a RAM copy AND and DISK copy?

I am thinking a command such as:

mnesia:create_table(xyz, [Attrs,
                                        {disc_copies, [nodeA, nodeB]},
                                        {ram_copies, [nodeA, nodeB]}

Would this work?

There is no need to do that. A copy of disc_copies table is also stored in RAM.

Also, is there a way to verify which tables are being accessed i.e. through tv?

I don't think so. Out of curiosity, why would you want to do that?


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