I work with Spring and Hibernate and I used Oracle 11g as database and I used JBoss 5. I have a problem to re-establish the connection automatically I used c3p0-0.9.1.1.jar This my config in my application : But I have this error : my application works correctly using the previous database configuration but m…
Tag: jdbc
ResultSet to HashMap
I am trying to pass the output of a ResultSet to Java HashMap. While the Output1 is showing all the records(from the DB). The put command only takes the last value from the ResultSet in. Output1: Output2: How do I make the put command to iterate over the results from the ResultSet? Answer All your IDs are ide…
org.hibernate.internal.util.config.ConfigurationException: Could not locate cfg.xml resource [/HibernateTest/src/hibernate.cfg.xml]
I am trying to connect to Postgresql9.1 in ubuntu with pgadmin3. My Pgadmin3 GUI tool does not give any option to create tables by right clicking the database, but it is available in some videos I saw. Therefore, I used terminal to create the database and it showed up in pgadmin3. my file structure My Userdet…
How to SSH tunnel and connect to a database using IntelliJ and JDBC?
I’m having issues connecting to a database hosted on a server using IntelliJ and JDBC. With the command line, the command: creates a tunnel successfully and the command: connects to the database fine and allows me to use it. How would this be translated correctly into the IntelliJ Data Sources and the S…
Can we fetch the results using one RowMapper object instead of creating objects everytime?
When fetching results from database through SpringJdbcTemplate, everywhere I have seen that they are passing the new object of RowMapper` every time. Is this required? Or can we just use one object and pass it again and again? Example: I know this object will be garbage collected later on, but I didn’t …
How do I configure PostgreSQL with Grails 3.0?
I am using IntelliJ IDEA 15.0.2 as an IDE. I have created a Grails 3.0 application and changed it a bit to configure PostgreSQL. Here is my dataSource: And in my build.gradle I added runtime “postgresql:postgresql:9.4-1207.jdbc4”. But that gives errors when I run: What have I missed? Answer Data s…
PostgreSQL throws “Connection has been abandoned” -> “An I/O error occurred while sending to the backend”
I know that there are a lot of topics about abandoned connections , however I can’t figure out what is the problem in my case, so I really hope for some help. I have a Java application with Spring, which fetches some data from external services, and tries to save it in database. I have the following con…
No suitable driver found for Oracle Database connection
I have small Java Application, which execute every day and checks for data in database using Cronj Schedular and everything works fine, but recently I have observed that, it is failing due to At the same time, when I run my test code to check Database connectivity that works fine without above exception. I…
Use JDBC/Mysql Connector in intellij idea
I’m new in Java, and I need to establish a connection to a MySQL server (local), I have add the libraries in Intellij idea but it seems not work, the IDE can’t find the class i think… I become crazy I’m searching since two hours… I come from visual studio/c# dev environment and i…
How configure connection existence check in C3P0?
I am using the below code to get Connection. I have used the c3p0 library for connection pooling. Now my question is, this code is not checking whether the connection is existing or not. Most likely this will get hit by the famous connection closed error after 8 hours. While I was using C3P0 with hibernate, t…