Initially, after reading books on the subject, I firmly believed that the algorithm for working with a database from a servlet is as follows: create a connection -> connect to the database -> form a request -> send the request to the database -> get the query results -> process them -> close connection -> OK. Now, with a better unde...
Following is the configuration details: <property name="hibernateProperties"> <props> <prop key="hibernate.dialect"> org.hibernate.dialect.Oracle9iDialect </prop> <prop key="hibernate.show_sql">false</prop> <prop key="hibernate.cache.provider_class"> org.hibernate.cache.OSCacheProvider </prop> <prop ...
When working with NHibernate and Sql Compact in a Windows Form application I am wondering what is the best practice for managing connections. With SQL CE I have read that you should keep your connection open vs closing it as one would typically do with standard SQL. If that is the case and your using a IoC, would you make your repositori...
When opening a connection to SQL Server 2005 from our web app, we occasionally see this error: "Impersonate Session Security Context" cannot be called in this batch because a simultaneous batch has called it. We use MARS and connection pooling. The exception originates from the following piece of code: protected SqlConnection Open()...
Hello, Updated below I couldn't describe the question any better without going into detail. I am having major issues with development/deployment of projects using SubSonic. Up until now everything has been fine but this is seriously hampering my progress. The project, while not important, is a CMS/Shopping Cart. I am using Visu...
I'd like to know how to properly use connection pooling with Active MQ. Currently I have a Connection Factory that creates a new connection every time I want to send a message. I'd like to be able to pool Connections so I don't incur the overhead of connecting every time. ...
I get a communication link failure while application tries to establish a connection with DB. [#|2010-04-08T20:09:57.825+0300|SEVERE|glassfish3.0|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=24;_ThreadName=Thread-1;|Cannot connect to database server = com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: ...
Is there a ruby gem or such for MySQL connection pooling that isn't part of rails? I simply have a ruby script (again, I don't do anything with rails). ...
We are using Entity Framework 1.0. In some cases we need to explicitly open connections, and then need to explicitly close connections. See http://msdn.microsoft.com/en-us/library/bb738582.aspx My question is, when we call "close" does the connection actually get closed, or is it just returned to the connection pool? ...
Dear all, Kindly look at the following code as this sample code gives an error when i hosted it on Hostexcellence , but locally it runs perfect, and the error is as the following: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in u...
I am using weblogic JDBC datasource and my DB is oracle 10g,below is the configuration. It used to work fine but suddenly it started giving problem,please see below exception. Weblogic JDBC datasource,java.sql.SQLException: Cannot obtain XAConnection weblogic.common.resourcepool.ResourceLimitException: No resources currently...
Hows does Drupal 6 interact with MySQL for connections and transactions? Does connection pooling get used? How are transactions handled? At what level are these things managed by Drupal vs being handed off to be handled by MySQL? I did a good amount of searching on the web and within Stack Overflow, but mainly, I only found articles ...
My ASP.NET website while trying to connect to the database for first time after a period of inactivity throws an time out exception. I understand the connections in the connection pool get terminated after some idle time for some reason (Firewall or Oracle settings) and the pool or app doesn't have a clue about it. Is there any way to v...
In the application that I am making right now, I am getting this error: error connecting: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. Evidently I am touching max-count in the co...
I have two web applications. Both of yhem use oracle.ucp.UniversalConnectionPool. When I deploy these applications on JBoss I get following exception: java.sql.SQLException: Unable to start the Universal Connection Pool: java.sql.SQLException: Unable to start the Universal Connection Pool: oracle.ucp.UniversalConnectionPoolException: ...
I have the following code, If I use conn == null in finally do I still use connection pooling? I know it is a good practice to close your connection but how about disposing the whole connection object? public void ExecuteNonQuery(SqlCommand Cmd) { //========== Connection ==========// SqlConnection Conn = new Sql...
Can anyone share the origin and meaning of the jdbc connection pool named c3p0. Was it inspired from star wars?. ...
We are running several calls against a SQL Server database within a transaction scope using entity framework. Are we right is assuming that the SPID will be held for the duration of the transaction and that all calls will be made on the same SPID? ...
Can a SPID be used by two connections, while both connections are open? If a connection is returned to a connection pool, will it hold on to the SPID? ...
I understand that a typical .NET application that accesses a(n SQL Server) database doesn't have to do anything in particular in order to benefit from the connection pooling. Even if an application repeatedly opens and closes database connections, they do get pooled by the framework (assuming that things such as credentials do not change...