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Database Forum / Oracle / Oracle Server / January 2006

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Oracle Streams v Advanced Queuing/Replication

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johnleslie@madasafish.com - 27 Jan 2006 10:19 GMT
Anyone using Oracle Streams? Anyone know if it is available in 9i
Standard Engine?

Should I be using Oracle Streams rather tha Advanded Queueing nd Basic
Replication?

Anyone know the pros and cons?
Ranko.Mosic@gmail.com - 27 Jan 2006 14:43 GMT
Check this:
http://asktom.oracle.com/pls/ask/f?p=4950:8:17721303307492342743::NO::F4950_P8_D
ISPLAYID,F4950_P8_CRITERIA:14672061404704


Streams is available in 9i.

Streams is Oracle's replacement for Replication.
Streams is implemented using Advanced Queuing.

Check otn, Mishra's article for basic Streams setup.

Regards, Ranko
Ranko.Mosic@gmail.com - 27 Jan 2006 14:43 GMT
Check this:
http://asktom.oracle.com/pls/ask/f?p=4950:8:17721303307492342743::NO::F4950_P8_D
ISPLAYID,F4950_P8_CRITERIA:14672061404704


Streams is available in 9i.

Streams is Oracle's replacement for Replication.
Streams is implemented using Advanced Queuing.

Check otn, Mishra's article for basic Streams setup.

Regards, Ranko
DA Morgan - 27 Jan 2006 22:11 GMT
> Anyone using Oracle Streams? Anyone know if it is available in 9i
> Standard Engine?

No.

> Should I be using Oracle Streams rather tha Advanded Queueing nd Basic
> Replication?
>
> Anyone know the pros and cons?

AQ is not replication.

Signature

Daniel A. Morgan
http://www.psoug.org
damorgan@x.washington.edu
(replace x with u to respond)

DA Morgan - 27 Jan 2006 22:13 GMT
> Anyone using Oracle Streams? Anyone know if it is available in 9i
> Standard Engine?
[quoted text clipped - 3 lines]
>
> Anyone know the pros and cons?

Correction. Streams is available for 9i. I am not sure if it is
part of the Standard Edition license.
Signature

Daniel A. Morgan
http://www.psoug.org
damorgan@x.washington.edu
(replace x with u to respond)

neil.isenberg@gmail.com - 31 Jan 2006 04:18 GMT
Greetings,

Be aware that any kind of replication be it streams, advanced
replication, Quest's Shareplex, etc. has a serious learning curve to
really get up to speed on the details.  If you have the money, go to
the classes on the options considered before committing.  If you plan
to do a true master-to-master, peer-to-peer, active-to-active, whatever
you choose to call it, bidirectional environment, the learning curve is
much steeper and the opportunities for something to go wrong much
greater.

Issues to consider for each option:

(1)  Which datatypes do they allow?  Which datatypes will you need?  Do
you use the XML datatype?  LOBs?  Raw? Long Raw?  Those are some
datatypes to ask about.
(2)  What limitations will the replication option impose on developers?
(3)  What transactional load capacity do you need (if heavy, probably
steer away from AR).
(4)  How do they handle triggers?
(5)  Will you need a built-in compare/repair functionality (find and
fix synch issues)?
(6)  Ask if a DML statement that processes 100 million rows will become
100 million individual inserts on the target.  If so, consider the
performance hit and potential for falling behind in replication.  Do
you even care about non-fatal lag-time?

There are lots of other considerations to make in choosing a
replication tool, but those are a few good ones to think about.  Hope
that helps.

neilx.xisenbergx@gxmail.coxmx
(remove x's)
neil.isenberg@gmail.com - 31 Jan 2006 04:23 GMT
Greetings,

Be aware that any kind of replication be it streams, advanced
replication, Quest's Shareplex, etc. has a serious learning curve to
really get up to speed on the details.  If you have the money, go to
the classes on the options considered before committing.  If you plan
to do a true master-to-master, peer-to-peer, active-to-active, whatever
you choose to call it, bidirectional environment, the learning curve is
much steeper and the opportunities for something to go wrong much
greater.

Issues to consider for each option:

(1)  Which datatypes do they allow?  Which datatypes will you need?  Do
you use the XML datatype?  LOBs?  Raw? Long Raw?  Those are some
datatypes to ask about.
(2)  What limitations will the replication option impose on developers?
(3)  What transactional load capacity do you need (if heavy, probably
steer away from AR).
(4)  How do they handle triggers?
(5)  Will you need a built-in compare/repair functionality (find and
fix synch issues)?
(6)  Ask if a DML statement that processes 100 million rows will become
100 million individual inserts on the target.  If so, consider the
performance hit and potential for falling behind in replication.  Do
you even care about non-fatal lag-time?

There are lots of other considerations to make in choosing a
replication tool, but those are a few good ones to think about.  Hope
that helps.

neilx.xisenbergx@gxmail.coxmx
(remove x's)
 
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