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Editorial Team
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Asked: 2026-06-07T19:13:07+00:00

In an JAVA web project hosted in Tomcat with a backend ORACLE/MYSQL We could

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In an JAVA web project hosted in Tomcat with a backend ORACLE/MYSQL We could add a <Resource> like below (consider connection an Oracle Server)

<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/myProject">

  <Resource auth="Container" driverClassName="oracle.jdbc.driver.OracleDriver" 
  factory="oracle.jdbc.pool.OracleDataSourceFactory" 
  maxActive="20" maxIdle="10" 
  maxWait="-1" name="jdbc/TestDB" password="dbPAss" type="oracle.jdbc.pool.OracleDataSource" 
  url="jdbc:oracle:thin:@DBHOST:PORT:SERVICENAME" 
  user="dbUser"/>

  <Loader delegate="true"/>
</Context>

in the context.xml of the project and only changing a few things if its connecting a MySQL
and
can used in a JAVA SERVLET by using 

Context initContext = new InitialContext();
Context envContext  = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/TestDB");

and then creating its Connection Object

What should be the correct syntax for using it for MongoDB?

I am intending to store the HOST,PORT, USERNAME and PASSWORD for the MongoDB server.

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1 Answer

  1. Editorial Team

    Tomcat only supports JDBC DataSources when using <Resource> elements (well, it supports other things like SMTP sessions, etc. but for databases, they must be JDBC-based). There is currently no JDBC driver for MongoDB (because it’s not a relational database, and the JDBC API makes no sense for it) (unless you want to try this thing: https://github.com/erh/mongo-jdbc), so you’ll have to manage your own resource pool for it.

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