A cluster consists of a group of computers connected so that in many respects they can be viewed as a single system.

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Create a high availability cluster configuration PostgreSQL for Windows

I want a server to be replicated, here is the scenario: When my primary server goes down or fail I want the secondary or the standby server to take over, I'm using Windows 7 for the primary server, ...
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343 views

Clients require instance name to connect to clustered instance

We have a clustered instance, say Instance1, assigned its own virtual network name and IP, via Failover Cluster Manager. This instance is configured to listen on port 1433 in SQL Server network ...
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446 views

How to shut down clustered SQL Server 2008 R2 with NOWAIT?

Is it possible to shutdown with nowait on a clustered instance? I want to delay recovery to when the instance starts, and I want to shut down as quickly as possible without issuing checkpoints to my ...
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1answer
413 views

SQL Server 2008 component is cluster-aware? [closed]

Which SQL Server 2008 components are cluster-aware? Notification Services Tuning Advisor Full Text Search Reporting Services Integration Service
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1answer
3k views

MariaDB Galera Cluster Replication error, no state received?

I have a very minimal, fresh out of the box setup for MariaDB with Galera clustering. My master node of the cluster is able to run, and is reporting that there is only one node attached to the ...
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1answer
450 views

When changing startup parameters on a cluster, does each node have to be updated manually?

When moving a SQL 2005 instance to new disks on a two-node Windows 2003 cluster, I changed startup params on the active node to reflect the new paths for the master DB files and error logs. I ...
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3answers
2k views

SQL Server 2012 Standard Edition - multiple instances and memory utilization

If we have multiple instances of a SQL Server 2012 Standard Edition (which has a 64 GB memory limit) on one server which has 192 GBs of RAM, do both instances only have access to the first 64 GBs of ...
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1answer
284 views

Oracle DB 11gR2 netca installation failing

I am getting below error when I run netca from command line cmd: /u01/app/oracle/product/11.2.0/db_1/bin/netca /silent /responsefile=/oracle_binaries/database/response/netca.rsp [main] [ 2013-05-17 ...
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196 views

How to setup a Postgres-xc streaming replication with master-slave(for HA)?

Can you guys please help me about how to make streaming replication with master-slave configuration using Postgres-xc to confirm an HA environment? Thanks
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1answer
654 views

PowerPivot doesn't install in SharePoint mode on an Active/Passive Cluster

We a provisioning a new SQL Failover Cluster. We have successfully configured the SQL instance, and have moved on to configuration of the PowerPivot for SharePoint instance. We run the configuration ...
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2answers
160 views

Is it possible to remove a database server from a cluster resource, but keep it running on the node

I was wondering if anyone knew whether it was possible to delete the cluster resource, but keep all of the disks and sql instance running on the node instead? So if I was to delete the cluster ...
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1answer
459 views

How to install and configure Postgres-XC in windows?

Can anybody suggest me any resources of the complete installation procedure of postgres-XC in windows. I've installed postgresql-9.2 in my windows and can use it. Now I need to know the installation ...
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1answer
144 views

Should we always prefer clustering over a master-slave configuration if the goal is high-availability?

Given: I have two virtual machines on a SAN that I can use to host RavenDB. Question: If my goal is high-availability, then should I always prefer clustering over a master-slave configuration? From ...
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1answer
887 views

What is the safest way to run SSIS on Multiple Named SQL Server Instances?

I have an Active/Active SQL Server 2008 R2 cluster. There are two named instances on each node and no default instance. I need to deploy SSIS packages to the different instances. To do this, I ...
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360 views

PostgreSQL: Slave doesn't replicate the Master's data

I'm using PostgreSQL 9.2.3 on both computers, both of which run Win2008R2. I've setup streaming replication by following this guide: ...
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1answer
332 views

Redo Logs Mysql Cluster

The mysql cluster has 4 directories namely D8 D9 D10 D11 for redo logfiles. But while inserting into table only one redo directory is used. I ran following command to get redo information "all dump ...
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1answer
774 views

Moving DBs (including System DBs) to new LUNs on a single node cluster

We have a single node cluster (SQL2K8 R2) currently utilizing storage on our old SAN. We'd like to migrate to storage on the new SAN without rebuilding or moving the user DB. The infrastructure ...
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1answer
976 views

SQL Server 2008 Cluster Across Two VMWARE Hosts

Vmware ESX 5 from a Vcenter Two Windows 2008 R2 VMs I am attempting to setup Failover Clustering using two VMs from within a Vcenter. Each virtual machine resides on a seperate physical host ...
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168 views

Error in alter table reorganize partition for MySQL Cluster

My cluster contains 48 million rows and cluster contains 4 storage nodes . After that I add online storage node and executed alter table 'customer_tbl' reorganize partition. Some parameters of ...
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337 views

Cannot start SQL Server service on SQL Server cluster [closed]

I have a SQL Server 2008 cluster with 2 nodes. I rebooted both machines and now I CANNOT start the SQL Server service from: Node1 or Node2 or ClusterSQL (the cluster SQL Server) I am getting an ...
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1answer
149 views

Data usage increases initially when reorganize partition mysql cluster

In my MySQL cluster, the data usage of 4 data nodes is approximately 77%. I added a new data node online, and attempted to reorganize partition to redistribute data among all data nodes. But before ...
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1answer
2k views

SQL Server cluster questions please

We have SQL Server 2008 R2 cluster active/active/active (a, b, c) and three instances run on this environment. We did a test on one of the instances, and failover test. Manual failover from node c ...
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1answer
405 views

SQL Server weird issue with indexes and query planner

We had a bunch of crashes and restorations a few days ago and following those, the SQL Server DB has been acting strangely. We know that there were some issues with the failover clusters due to which ...
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1answer
317 views

MySQL licensing [closed]

I have looked at a few questions posted in stackoverflow http://stackoverflow.com/questions/225987/can-someone-explain-mysqls-license-and-what-it-means-to-closed-source-developme ...
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2answers
2k views

Manually moving SQL instance to another node causes immediate database mirror failover

I have a two-node SQL cluster (2008 R2). Some of the databases within that SQL instance are mirrored to another server on a remote site, using the High safety with automatic failover. The mirroring ...
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1answer
208 views

Load balancing after clustering is failed in SQL Server cluster

This is what I have been asked today on my interview for a SQL Server DBA position: It is an active - active cluster configuration. The primary node is in NY and the other node is in Rio. The NY ...
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1answer
420 views

What are the parameters that are needed to be monitored for MYSQL Cluster

I am new to MySQL cluster. I had installed MySQL cluster successfully with 2 data nodes and 1 Management Node and 1 SQL node. I want to know where and how exactly the core data is getting stored. ...
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434 views

Storing logs on per day basis in PostgreSQL

Requirements here are to store historical logs. For the sake of simplicity I'll assume this sample scenario where we are selling some products on our website and we need to keep records of sales of ...
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1answer
472 views

AlwaysOn Availability Groups: Confusion with some concepts

In Sql Server 2012, I am trying to install Failover Clustering to configure AlwaysOn Availability Groups. When I run Cluster Validation test wizard, it comes back with a lot of errors. One of them ...
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1answer
184 views

memcached service stopped unexpectedly

I am working with MySQL Cluster 7.2.4 memcached 1.6 I started memcached service with ndb-caching option: memcached -E /usr/local/mysql/lib/ndb_engine.so -e ...
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1answer
1k views

What is the difference between Oracle clusterware and Real Application Clusters?

What is the difference between Oracle clusterware and Real Application Clusters? If we have 2 servers and want to join them into a cluster why there are two separate software products?
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1answer
1k views

How many database licenses do we need for setting 2 servers (nodes) into a cluster?

Suppose we have a server that has only 1 CPU with 1 core, so we need 1 Oracle database license for installing a database into it. Now, if we would need to add a second server, combine them into ...
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1answer
2k views

Continuing failovers on production server

At least a few times a day, my main production server has recently begun failing over. Only, the quorum doesn't move to the other node. I ran the validation report, and got a lot of info I don't ...
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1answer
598 views

Dual management node for mysql clustering

I currently have mysql cluster setup and running. Here is my current setup: 1 - management node 2 - data nodes 2 - mysql nodes I wish to incorporate a failover for the management node. The ...
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1answer
322 views

Redesigning a multi-instance MySQL server for performance and resiliency

I've got a single MySQL server which currently runs N separate MySQL instances on, which are rapidly growing beyond the capabilities of that box. Is it possible to have an active-active MySQL ...
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1answer
684 views

Executing Powershell SMO against a cluster with elevated privileges to update service accounts

I'm working on a Powershell script to update service accounts on named SQL instances in a failover cluster. I'm trying to use the SMO and WMI to update this so that I can update the service account ...
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2answers
177 views

New Cluster Testing - Best Practice

We've finished setup of a 4-node SQL Server 2005 cluster. We are using Windows 2008 R2 as the underlying OS. We are looking for suggestions on a set of tests we could perform to test failover of the ...
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2answers
2k views

Advantages of using PgBouncer vs HAProxy?

Are there any advantages for using one over the other? I'm only looking at options to hide the actual IP address of the master and slave servers from my processes, and not having to restart them if ...
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2answers
200 views

Teaching Slony replication to select slave nodes

There is a system with up to 256 nodes in db cluster. We need to replicate some data from one of them across to all others. But for every row to replicate there is a list of nodes where it must be ...
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1answer
971 views

What are the naming rules for named instances on a cluster?

I am planning to install two SQL Server 2008 instances on an active/passive cluster. Each instance is supporting the same application, but the DBs will be supporting specific geographic locations. I'd ...
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1answer
168 views

MySQL Cluster Steps To Recover Data If Catstrophic Failure Occurs

I want to know if a catstrophic failure occurs (like a power outage), and all nodes in MySQL Cluster are shutdown in cluster then data will be lost even though a backup was taken? Or it possible that ...
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2answers
4k views

Creating High Availability Cluster with PostgreSQL

I am new to database design. I have a task to create a high-availability cluster. I Googled a lot, however I haven't found any good way to do this on PostgreSQL. Where should I start and what are ...
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1answer
5k views

How many IP numbers are there for a SQL server active active cluster setup also a active passive setup?

How many IP numbers are required for a SQL server active/ active cluster setup also what in the case of an active/ passive setup? Correct me if I am wrong 2 for private network 2 for public network ...
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1answer
345 views

Move DTC from one node to another in Windows 2003 R2 Clustering

I have a Windows 2003 R2 two node cluster that is running MSDTC as part of the Cluster Group. Is it possible for me to change the current MSDTC owner without moving the entire Cluster Group to the ...
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1answer
129 views

Rolling changes to production databases

We're currently using Clustering to do fail over for our SQL environment. There are two servers that use the same shared drive. The SQL database is on a shared drive. This provides OS and hardware ...
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2answers
7k views

I cannot get SQL Server 2012 to install the database engine

SQL Server 2012 installation on a standard Windows 2008 R2 server. It refuses to install the database engine or sql replication. During the installation I got no errors saying that it wasn't ...
3
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1answer
152 views

Distribute MySQL in different cities?

We have our main MySQL server in city A. We have the bulk of our customer service staff in city B. The staff are complaining that the connection is too slow to the server. The options are: Have them ...
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1answer
756 views

De-Cluster SQL Server 2012

Is there any way to 'de-cluster' an instance of SQL Server 2012 that was installed using the 'New SQL Server Cluster Installation' option? We are having issues with the failover portion of clustering ...
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1answer
196 views

SQL Server Mirroring kicks in before cluster has time to fail over

I have two clusters each with two nodes configured in active/passive; the two clusters take part in a high-availability mirroring session using a separate server as the witness. When a node fails in ...
4
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1answer
501 views

SQL Server Agent fails to start in Failover cluter

The SQL server agent in a cluster (as a cluster resource) fails to start. I'm looking for error logs to give me a clue, but so far, all it says is: "failed to start". What could be the possible ...