Need you help.I am doing Failover Management for DB2 9.7. The platform is Linux. I am using WebSphere App Server, IBM HTTP Server, DB2 9.7.I need to do workload management and failover management. I am not sure how to start on it.
DB2 9.7 allows failover through HADR. When a failover event occurs, the applications connected to the primary DB2 server will encounter a failure in their open transaction, and automatically reconnect to the standby DB2 server.
Here is a page describing DB2's built-in workload management feature
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I'm trying to determine if database replication is supported by Kentico 11, I see documentation from 7.0 regarding database replication, but nothing for version 8 onward. If it is supported, does it only still support merge replication? We want to have a warm site that runs off of a replicated database that we can fail over to in the case that our primary site is down.
this was removed from the documentation as it is not related to Kentico. The DB replication or also DB mirroring is SQL server side configuration. If it is configured correctly, Kentico will not even notice that the fail-over DB is used. This is all handled on the SQL server side.
I have a aws ubuntu server with 4gb RAM and 2gb internal memory. I want the wso2 iot server with postgresql configuration. What kind of configuration needed for aws ubuntu server for this requirement. As per the wso2 iot documentation, 4gb RAM and 1gb, I have configured with that configuration which is not good right now. Please do any one tell me the what kind of server optimisation needed for my requirement.
When dealing with wso2 modules, I have found that they only work for me when deployed as individual servers. I was using local VirtualBox vms so that I had Data Services on one vm, Enterprise Service Bus on another, etc. Any attempt to combine them in the installer would result in Java dependency hell.
I need to set up real time sync process between a on premise postgresql instance with cloud postgresql instance. Please let me know what are all the options available through which i can achieve it.
Do i have to use any specific tool or it can be managed through replication .
Please advice
Use PgPool
http://www.pgpool.net/mediawiki/index.php/Main_Page
from their web page:
pgpool-II can manage multiple PostgreSQL servers. Using the replication function enables creating a realtime backup on 2 or more physical disks, so that the service can continue without stopping servers in case of a disk failure.
We have setup a community postgresql service on Cloud Foundry (IBM Blumix). This is a free service and no automated backup and recovery is supported out of the box.
Is there a way to set up a standby server or a regular backup in case there is any data corruption/failure?
IBM compose and ElephantSQL can provide this service at a cost, butwe are not ready for it yet.
PostgreSQL is an experimental service and there is not a dashboard and other advanced features (Daily backup for example) that you can find in other services that you mentioned. If you want to do a backup you could write an ad-hoc script that 'saves'\exports all tables as you want and run it every day.
If you need PostegreSQL you can create a PostegreSQL by compose service $17.50 / mo for the first GB and $12 for Extra GB )
We used Postgresql Studio and deployed it on IBM Bluemix. The database service was connected to the pgstudio interface (This restricts the access to only connected databases). We also had to make minor changes to pgstudio so that we could use pg_dump with the interface.
The result: We could manually dump the data. This solution works well as we could take regular dumps (though manually).
In the free tier you are right in saying that you cant get the backup. Those features are available only in Compose for PostgresSQL service - but that's a paid service.
I'd like to host a Windows service application using e.g. Azure on AWS. I know I can modify my application to be an Azure worker role. Can I do the same thing with AWS or is there a better hosting provider. My application uses a database preferably SQL Server.
AWS is an IaaS - Infrastructure as a service, you can very much take a Windows Server 2008 R2 - EC2 instance and treat it as your own laptop or computer or server(just take RD) and deploy your windows service.
Regarding the DB, you can install SQL Server or MySql in the same instance (if you are fine with performance) or put the DB server in a separate EC2 instance. If you are worried about adding more EC2 instances, RDS is also an option available.
Since the AWS AMI (Amazon Machine Image) is a standard Windows 2008 operating system (various editions) you can create and deploy a Windows service as you normally would - and in the .NET world, Windows Service is still the way to go. Azure worker roles only work in Windows Azure.
With SQL Server on AWS you can use an AMI with SQL on already or install your own (see the pricing options for windows/SQL instances) but you will not have failover functionality as you can only have express or standard. To have redundant SQL servers you would need to do something like database mirroring or replication and keep it running yourself. There is no database service for SQL on AWS like there is with RDS (mySQL and Oracle) or SQL Azure