How Does this work in Detail: Archiving the Standby Redo Log on the Standby Database

From: cfoughty <cfoughty_at_gmail.com>
Date: Thu, 22 Oct 2009 12:21:49 -0700 (PDT)
Message-ID: <c9a052bd-3c05-4c3a-b495-587e8d445b24_at_f10g2000vbl.googlegroups.com>



This is mainly just for my interest.

 The documentation says the following:

A log switch on the primary database triggers a log switch on the standby database, causing ARCn processes on the standby database to archive the standby redo log files to archived redo log files on the standby database.

So what process on the primary sends the message to what process on the standby telling the ARCH on the standby server to archive the current standby redo log?

Does the ARCH process on the primary send a message to the RFS process on the standby server, and then the RFS process sends a message to the ARCH process on the standby server telling the standby server ARCH to archive the current standby redo log?

OR

Does the ARCH process on the primary send a message to the ARCH process on the standby server telling the standby ARCH to archive the current standby redo log?

OR

Some other method to tell the ARCH process on the standby server to archive the current standby redo log?

I just want to know how it works.

Thanks,

Cy Foughty Received on Thu Oct 22 2009 - 14:21:49 CDT

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