DataSource for Replicated Database

Hi, first, of all, I don't know if this forum is the right place to post my question, so sorry for bothering you!
I'm working in a project where I'm thinking about using two Oracle databases one replicating the other. I read somewhere that this using Multimaster Replication is a good way to obtain more availability. But I don't know how to create a DataSource in OC4J that can use both databases and choose the one that's not down. If I were using Weblogic, I could create a connection pool for each database, and then create a MultiPool that uses the already created pools.
I don't know if I miss something in the documentation of Multimaster Replication, but I don't see how to create a single point of access for the Replicated databases, and neither how to create a DataSource for OC4J that can access more than one database. I'm totally new in Oracle world! Perhaps it isn't the better way to obtain more availabilty, perhaps I need to use a third component to provide a single point of access for the databases. I really don't know!
Thanks in advance,
RGB

Roberto,
Multi-master replication is for distributed datbase. The best thing to have a better database availability is 9i Real Application Cluster.
Please follow http://otn.oracle.com/products/oracle9i/content.html to read more about RAC.
regards
Debu

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What's the best MS SQL tool(s) for managing (creation, updating, deletion, pausing, starting, etc) a bunch of replicated databases?

I'm looking for recommendations on how best to program (scripts, procedures, anything else) managing a set of databases across multiple datacenters. The tasks I would like to be able to do database by database is...
copy a specified database from one server to another ("import") without the user access rights
add replication to the "imported" database objects based on an extended property
update the replicating "imported" database, including changes to the data values, and changes in schema, without bringing down the database (rolling updates across the various datacenters is permitted)
adding/modifying a standard set of maintenance plans for each Database
removing replication from a selected database
I'm familiar with the standard SQL product but have no exposure to the other SQL components like SSIS. I have to date several SQL batch scripts that do parts of the above but it seems there must be a better way. Assume that there is one Enterprise Edition
SQL instance at each datacenter. Replication is transactional Peer 2 Peer. We are also considering if we want to add DB mirroring but have decided not to do so at this time.
BTW I'm one of those people that can't get the "copy database" menu option in SSMS to work. I'm not a DBA but it looks like I'm going to need how to act like one.
Developer Frog Haven Enterprises

I would recommend you to get involve DBA for any such tasks. The task which are listed it's not going to be simple thing. If you don't have prior experience in High availability configuration, it's really difficulty to manage even if you've any third party.
But you can rely on backup and restore for any third party tools.
To manage database ,configure and maintain HA you need to have SQL Server HA knowledge.
My testing so far seems to show that it's quite easy to break the replication with changes
to the databases. Using SSMS "canned" wizards and procedures to delete and recreate replication leaves many vestiges behind cluttering up the database instance.
You can create a script to cleanup the replication and re-create it from the scratch
http://www.mssqltips.com/sqlservertip/1808/sql-server-replication-scripts-to-get-replication-configuration-information/
http://support.microsoft.com/default.aspx?scid=kb;en-us;324401
--Prashanth

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==============
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oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:138)
oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:316)
oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:282)
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The issue is resolved now.
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Shall I use one datasource for multiple connection pool?

Hi,
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Actually, now (after the GRANT described in my reply before) the Exception has changed to:
Caused by: com.sap.sql.log.OpenSQLException: Error while
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createPooledConnection(PooledConnectionFactory.java:119)
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getPooledConnection(DriverPooledConnectionFactory.java:38)
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createPooledConnection(DBDataSourceImpl.java:685)
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getConnection(DBDataSourcePoolImpl.java:67)
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Best practice for replicating Partitioned table

Hi SQL Gurus,
Requesting your help on the design consideration for replicating a partitioned table.
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I can think of
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Ganesh

Plz refer to
http://msdn.microsoft.com/en-us/library/cc280940.aspx

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Hi,
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Hi
I am after some help with multiple processes and replicated databases.
I have a primary and secondary database replicated across a pair of servers and this seems to be working well. I'm trying to run another process on one of the machines that opens the environment and databases to view and/or modify the data.
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in the utility process causes DB_EVENT_PANIC in the server process.
Can anybody spot what I am doing wrong? I am using DB Version 4.7
Thanks
Ashley
open_env() {
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int flags = DB_CREATE | DB_INIT_LOCK |
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dbenv->repmgr_set_local_site(dbenv, listen_host, port, 0);
dbenv->rep_set_priority(dbenv, 100);
dbenv->repmgr_set_ack_policy(dbenv, DB_REPMGR_ACKS_ONE);
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dbenv->rep_set_nsites(dbenv, num_peers + 1);
dbenv->open(dbenv, ".", flags, S_IRUSR | S_IWUSR);
dbenv->repmgr_start(dbenv, 3, DB_REP_ELECTION);
sleep(SLEEPTIME);
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... Wait for db if slave and ENOENT ...
primary = dbp;
dbp->open(dbp, NULL, "secondary", NULL, DB_BTREE, flags, 0);
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secondary = dbp;
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sleep(SLEEPTIME);
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Running recovery (DB_RECOVER flag to env->open()) must be done only in the first process to open the environment.
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https://technet.microsoft.com/en-us/library/dd979782%28v=exchg.141%29.aspx
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Thanks in advance for your feedback!
FT
FT

Hi there,
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way and remove the legacy files afterwards.
Oliver Moazzezi | Exchange MVP, MCSA:M, MCITP:Exchange 2010,Exchange 2013, BA (Hons) Anim | http://www.exchange2010.com | http://www.cobweb.com | http://twitter.com/OliverMoazzezi

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Replicated database deadlocks.

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How do you collect stats to prove or disprove this statement?
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