Re: If you have a databaselink to a databae in the same server you should be using ipc
- From: "Yechiel Adar" <adar76@xxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 11 Oct 2004 19:24:31 +0200
Just to clarify:
I meant that in two or three years you are working in another company and a
new body is doing the dba work. When the time comes to move the database to
another server he will just install oracle, copy the database files and
tnsnames to the new server and will be sure that it will work. When he will
start to get errors he will spend time trying to find why the same database
with the same tnsnames that worked on the other server fails now.
Yechiel Adar
Mehish
----- Original Message -----
From: "Yechiel Adar" <adar76@xxxxxxxxxxxx>
To: <oracle-l@xxxxxxxxxxxxx>
Sent: Sunday, October 10, 2004 8:09 PM
Subject: Re: If you have a databaselink to a databae in the same server you
should be using ipc
> I think that you should not use IPC across database links.
> In two years time the load will increase and some dba will decide to move
> one database to another machine and then the link will not work and nobody
> will remember that it use IPC and now needs to be converted to tcp/ip.
>
> Yechiel Adar
> Mehish
> ----- Original Message -----
> From: "Juan Carlos Reyes Pacheco" <jreyes@xxxxxxxxxxxxxxxx>
> To: <sol.beach@xxxxxxxxx>; <oracle-l@xxxxxxxxxxxxx>
> Sent: Tuesday, October 05, 2004 11:25 PM
> Subject: Re: If you have a databaselink to a databae in the same server
you
> should be using ipc
>
>
> > Hi,
> > Exactly how do you change it fron the source DB to the target DB?
> > I think this answer your question
> >
> > fROM http://searchoracle.techtarget.com/originalContent/0,289142
> > sid41_gci940662,00.html
> > When a process is on the same machine as the server, use the IPC
protocol
> > for connectivity instead of TCP. Inner Process Communication on the same
> > machine does not have the overhead of packet building and deciphering
that
> > TCP has. I've seen a SQL job that runs in 10 minutes using TCP on a
local
> > machine run as fast as one minute using an IPC connection. The
difference
> in
> > time is most dramatic when the Oracle process has to send and/or receive
> > large amounts of data to and from the database. For example, a SQL*Plus
> > connection that counts the number of rows of some tables will run about
> the
> > same amount of time, whether the database connection is made via IPC or
> TCP.
> > But if the SQL*Plus connection spools much data to a file, the IPC
> > connection will often be much faster -- depending on the data
transmitted
> > and the machine workload on the TCP stack.
> >
> > You can set up your tnsnames file like this on a local machine so that
> local
> > connection with use IPC connections first and then TCP connection
second.
> >
> > PROD =
> > (DESCRIPTION =
> > (ADDRESS_LIST =
> > (ADDRESS = (PROTOCOL = IPC)(Key = IPCKEY))
> > (ADDRESS = (PROTOCOL = TCP)(HOST = MYHOST)(PORT = 1521))
> > )
> > (CONNECT_DATA =
> > (SID = PROD)
> > )
> > )
> >
> > To see if the connections are being made via IPC or TCP, turn on
listener
> > logging and review the listener log file.
> >
> >
> > I only ask if someone has something against doing this when using
database
> > links?
> >
> > Juan Carlos Reyes Pacheco
> > OCP
> > -------Original Message-------
> >
> > From: sol beach
> > Date: 10/05/04 17:09:28
> > To: jreyes@xxxxxxxxxxxxxxxx
> > Subject: Re: If you have a databaselink to a databae in the same server
> you
> > should be using ipc
> >
> > IPC depends upon the value of ORACLE_SID. Right?
> > Exactly how do you change it fron the source DB to the target DB?
> >
> > Ready, Fire, Aim!
> >
> >
> > On Tue, 5 Oct 2004 16:59:22 -0400, Juan Carlos Reyes Pacheco
> > <jreyes@xxxxxxxxxxxxxxxx> wrote:
> > > Hi, one question please, if you have some comment about this.
> > >
> > > I think if you have a databaselink to a database in the same server
you
> > > should be using ipc conection or
> > > there is something saying it is not advisable
> > >
> > > Thanks in advance.
> > >
> > > Juan Carlos Reyes Pacheco
> > > OCP
> > > --
> > > //www.freelists.org/webpage/oracle-l
> > >
> > --
> > //www.freelists.org/webpage/oracle-l
>
> --
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