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Conference orarep::nomahs::dbstars

Title:DBSTARS Conference
Moderator:BROKE::BASTINE
Created:Wed Feb 02 1994
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:791
Total number of notes:1521

790.0. "when to upgrade target dbs using rep opt v7" by BROKE::BITHER () Wed May 28 1997 16:02

Rep Option install manual 
-------------------------
On page 3-8 section 3.3 the paragraph:

"You do not need to upgrade your target database system to Replication
Option Version 7.0 even if you upgrade the source database system to Version
7.0.  However, if you decide to upgrade Replication Option on the system where
your target databases reside, then you must convert any existing Rdb target
databases to the latest Rdb version before executing transfers using
Replication Option Version 7.0."

Proposed rewrite:
----------------
"You do not need to upgrade your target database system to Rdb V7 or v6.1
(depending on which version you are using for your transfer database) even
if you upgrade the source database system to Rdb V7.0.  However, if you 
decide to upgrade to Replication Option V7 on the system where your target 
database resides, you either need to upgrade your target database to Rdb v7 
or Rdb v6.1 (depending on the Rdb version of the transfer database) or 
you need to ensure that all transfers to the target database do a remote 
login to the target database so that the version of Rdb can be set to the
version of the target database."

I tested this on DBS400.  Using Rep Option v7 and an Rdb v7 transfer
database, an extraction transfer was able to successfully run transferring
data to an Rdb v6.0 database on the same system (dbs400).  I did:

  ...to new filename dbs400"user pass"::dir:file.rdb.
T.RTitleUserPersonal
Name
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790.1source dbs tooBROKE::BITHERWed May 28 1997 17:2832
Modify same section on source dbs too.

From:	BROKE::BITHER       "Please reply to [email protected]" 28-MAY-1997 16:27:25.78
To:	PROTEAU, GREEN
CC:	BITHER
Subj:	another possible doc error in the rep option install guide

Hi Claude,

Also on page 3-8, section 3.2 "Preparing the Source Database" appears
to have some incorrect information.  I was trying to ignore it but
Don caught me!  It says "...you still need to convert Rdb source databases
to conform with the latest version of Rdb."

I interpret that to mean that you need to convert them to the same Rdb
version as your transfer database.  However, I conducted a test here on
dbs400 and found that not to be true.  

Rep Option v7, Rdb 6.1 transfer db.  Logged into an Rdb 6.1 account.
Attached remotely to an Rdb 6.0 source database and defined an extraction
transfer to transfer data from the 6.0 db to a 6.1 db.  This worked.

Could we modify the doc to something like:

"Source databases do not need to be upgraded to the version of Rdb that you are
using (7.0 or 6.1).  However, if you are not going to upgrade your source
databases to the same Rdb version as your transfer database, and they reside on
the same system as your transfer database, then, when defining a transfer, you
must attach to the source database through a remote login that sets the Rdb
version to the same Rdb version as the source database."

Thanks, Diane