System Replication(DR): procedure to monitor the difference among the 3 different log modes

Is there any procedure to check the influence of the selected log replication mode (sync, syncmem or async) to the primary system?
Details about the replication seem to be provided only in the system view M_SERVICE_REPLICATION. Which kind of queries might be useful to track the difference?
And taking about the view M_SERVICE_REPLICATION: what are the “Delta Replicas” and why are they triggered if logs are replicated after an initial full replication?

Hi Sue,
I am setting DB_LEGACY for all sites. I loop over the list of sites, create a dbsite object and do this:
209 int eid;
212 DbSite *dbsite;
213 m_env.repmgr_site(e.host.c_str(), e.port, &dbsite, 0);
214 dbsite->set_config(DB_BOOTSTRAP_HELPER, 1);
215 dbsite->set_config(DB_LEGACY, 1);
216 dbsite->get_eid(&eid);
217 dbsite->close();
221 m_replication_info.replica_map[eid] = e.host;
Here is a full code listing https://github.com/hypertable/hypertable/blob/master/src/cc/Hyperspace/BerkeleyDbFilesystem.cc, the relevant code is in the constructor BerkeleyDbFilesystem::BerkeleyDbFilesystem(...) starting on line 74. The same code is run on all the replication sites simultaneously.
Is there some other logging flag I should enable to get more debug info?

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Did you search the documentation ?
http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96521/ds_concepts.htm#15997

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hi, experts
i have read the standard courses HR310 and HR311,but i am still confused about the difference among the three standard TM schemas TM00,TM01 and TM04.
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Hi,
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can anyone tell me ?
for example.
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thanks a lot.

Hi,
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Just check these link:
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hi,
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Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
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Maintenance View ( SE54 )
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Please have a look at below link. It will help you.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
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3. Create
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8 copy
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The followings are different types of views:
Database View (SE11)
Database views are implement an inner join, that is, only records of the primary table (selected via the join operation) for which the corresponding records of the secondary tables also exist are fetched. Inconsistencies between primary and secondary table could, therefore, lead to a reduced selection set.
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Help View ( SE54)
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Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
Projection View
Projection views are used to suppress or mask certain fields in a table (projection), thus minimizing the number of interfaces. This means that only the data that is actually required is exchanged when the database is accessed.
A projection view can draw upon only one table. Selection conditions cannot be specified for projection views.
Maintenance View ( SE54 )
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Please have a look at below link. It will help you.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
Go thru this link plzz
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
Hope this is helpful, Do reward

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Hi,
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Regards,
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From SAP Notes
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System Replication(DR): procedure to monitor the difference among the 3 different log modes

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