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LTM Vs Rep Agent

3 posts in Replication Agent Last posting was on 2006-10-12 05:50:10.0Z
<KRV> Posted on 2006-10-11 13:47:55.0Z
From: <KRV>
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Subject: LTM Vs Rep Agent
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I'm using RS 12.6. Never worked with previous versions.

I would like to know what is the major difference between Rep Agent and an
LTM

Thank
KRV


"Mark A. Parsons" <iron_horse Posted on 2006-10-11 23:52:19.0Z
From: "Mark A. Parsons" <iron_horse@no_spamola_compuserve.com>
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Subject: Re: LTM Vs Rep Agent
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LTM was an external OS process that had to 'log into' the dataserver to do it's thing.

Rep Agent ... actually has a couple different meanings depending on your environment ...

1 - Rep Agent as an internal thread within the ASE dataserver; no external OS process, less overhead for communications

2 - Rep Agent as a separate OS process which 'reads the log' of non-ASE databases (eg, Oracle, UDB, etc.); used in heterogenous replication when the replicate/source database is something other than ASE

3 - Mirror Rep Agent; separate OS process used by the Mirror Activator product (logs into the primary database for catalog-type info; reads actual log activity straight from the device - or a mirror of said device - on which the database log resides)

-------------------

RA's are the preferred method for reading the transaction log now-a-days.

I see the LTM binary in the new RepServer software bin directory ... usually used for backwards compatibility with older ASE's which do not have the abilty to spawn/support an internal RA thread.

KRV wrote:

> I'm using RS 12.6. Never worked with previous versions.
>
> I would like to know what is the major difference between Rep Agent and an
> LTM
>
> Thank
> KRV
>
>


<SCGIB> Posted on 2006-10-12 05:50:10.0Z
From: <SCGIB>
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Thanks Mark.

"Mark A. Parsons" <iron_horse@no_spamola_compuserve.com> wrote in message
news:452d83b3$1@forums-1-dub...
> LTM was an external OS process that had to 'log into' the dataserver to do
> it's thing.
>
> Rep Agent ... actually has a couple different meanings depending on your
> environment ...
>
> 1 - Rep Agent as an internal thread within the ASE dataserver; no external
> OS process, less overhead for communications
>
> 2 - Rep Agent as a separate OS process which 'reads the log' of non-ASE
> databases (eg, Oracle, UDB, etc.); used in heterogenous replication when
> the replicate/source database is something other than ASE
>
> 3 - Mirror Rep Agent; separate OS process used by the Mirror Activator
> product (logs into the primary database for catalog-type info; reads
> actual log activity straight from the device - or a mirror of said
> device - on which the database log resides)
> -------------------
>
> RA's are the preferred method for reading the transaction log now-a-days.
>
> I see the LTM binary in the new RepServer software bin directory ...
> usually used for backwards compatibility with older ASE's which do not
> have the abilty to spawn/support an internal RA thread.
>
> KRV wrote:
>
>> I'm using RS 12.6. Never worked with previous versions.
>>
>> I would like to know what is the major difference between Rep Agent and
>> an LTM
>>
>> Thank
>> KRV