I've been trying to configure a connection pool for a SQL Server 2012 database. I currently have Informix and Oracle pools configured and working, only SQL Server is giving me a headache. This is how my resource on Context.xml looks so far:
<Resource name="jdbc/sqlserv"
auth="Container"
factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver"
type="javax.sql.DataSource"
maxActive="50"
maxIdle="10"
maxWait="15000"
username="username"
password="password"
url="jdbc:sqlserver://127.0.0.1:1433;databaseName=SQLDB;"
removeAbandoned="true"
removeAbandonedTimeout="30"
logAbandoned="true" />
That's using sqljdbc4 driver, of course. We already tried using jtds-1.3.0 with the driverClass="net.sourceforge.jtds.jdbc.Driver", but no go. All the resource-refs are also being correctly configured. Whenever I try to create a new connection using that Resource, it fails.
For comparison's sake, here's how our Informix and Oracle resources look like:
<Resource name="jdbc/infmx"
auth="Container"
type="javax.sql.DataSource"
factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
maxActive="50"
maxIdle="10"
maxWait="15000"
username="username"
password="password"
driverClassName="com.informix.jdbc.IfxDriver"
url="jdbc:informix-sqli://localhost:30091/infmx:informixserver=ol_infmx_soc"
removeAbandoned="true"
removeAbandonedTimeout="30"
logAbandoned="true"/>
<Resource name="jdbc/orcl"
auth="Container"
type="oracle.jdbc.pool.OracleDataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
url="jdbc:oracle:thin:#127.0.0.1:1521:orcl"
user="username"
password="password"
maxActive="50"
maxIdle="10"
maxWait="15000" />
So My question is: How can I correctly configure a connection pool for SQL Server 2012 on my tomcat context? I've searched high and low, attempted everything I've found, but nothing worked.
Thanks in advance.
[edit] Here's the stack trace: http://pastebin.com/w3rZSERs
[edit-2] It seems the problem is that Tomcat can't find the driver on his lib folder. We're pretty sure it's there, but we don't know to be sure of that. This happens with both sqljdbc4 and jtds-1.3.0. We're following every guideline we can find, but the problem persists.
We found our problem.
driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver"
Should have been
driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"
It seems to me that the java side is correctly configured.
Can you access the server using another JDBC connection (for example SquirrelSQL or similar software)?
If you can't access to the server using Squirrel, maybe you did not enable the TCP/IP access to your server, in this case, follow the accepted answer of Enable remote connections for SQL Server Express 2012
Related
We have an application provided by a 3rd party vendor that runs on Tomcat 8 and JDK 8 to an Oracle 12 DB with ojdbc7.jar & xdb6.jar driver. The application works, but is slower than expected. When investigating it appears the application is configured to use connection pooling, but it appears the application is creating new connections per query, and not using any of the initially created connections to the Database.
Unfortunately, I don't have access to the code of the 3rd party app. But, hoping for an idea on what I am missing in the Tomcat setting to have pooling work.
I've tried going through Apache's documentation for the older Oracle connections, and trying other options found on the web.
<Resource name="jdbc/DataSource" auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:#localhost:1521:XE"
username="myProxyUser" password="myPassword"
initialSize="5" maxTotal="100" maxIdle="-1"
maxWaitMillis="30000"
validationQuery="select 1 from dual"
testOnBorrow="true"
accessToUnderlyingConnectionAllowed = "true"
connectionProperties="defaultRowPrefetch=100"
removeAbandoned = "true"
removeAbandonedTimeout = "30"/>
You can check tomcat docs, mainly use factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
example on how to configure a resource for JNDI lookups
<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
testWhileIdle="true"
testOnBorrow="true"
testOnReturn="false"
validationQuery="SELECT 1"
validationInterval="30000"
timeBetweenEvictionRunsMillis="30000"
maxActive="100"
minIdle="10"
maxWait="10000"
initialSize="10"
removeAbandonedTimeout="60"
removeAbandoned="true"
logAbandoned="true"
minEvictableIdleTimeMillis="30000"
jmxEnabled="true"
jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;
org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
username="root"
password="password"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/mysql"/>
you can specify pooling by defining type and factory
type="javax.sql.DataSource"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
We are using tomcat jdbc pool in our project. The connection pool configuration is
<Resource name="jdbc/cc" auth="Container" type="javax.sql.DataSource" username="xx" password="plain text"
driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/xx?autoReconnect=true&useUnicode=true&characterEncoding=utf8"
maxActive="50" maxIdle="25" minIdle="10" maxWait="10000" testOnBorrow="true"
validationQuery="SELECT 1" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"/>
We want to use encrypted DB password in configuration rather than plain text. How we can do this, please help me on this. ( we know how to do this if we are using tomcat dbcp, but the same implementation is not working for tomcat jdbc)
I have an application that uses the built-in Tomcat connection pool, and for the most part it works. A problem arises when I'm trying to use another pool to get a different set of connection from the same database, but from a different username/password (It's an oracle database that uses 2 usernames to access different namespaces of tables and function).
The first pool is accepted, but for the second one, I'm getting this error
15:09:47.157 [http-nio-8081-exec-5] ERROR com.applicationname.providers.ConnectionManager - NamingException in MyDataSource
javax.naming.NameNotFoundException: Name [appdb_two] is not bound in this Context. Unable to find [appdb_two].
at org.apache.naming.NamingContext.lookup(NamingContext.java:818) ~[catalina.jar:8.0.15]
Here is my configuration:
server.xml
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users-->
<Resource name="UserDatabase"
auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
<Resource name="jdbc/appdb_two"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"/>
<Resource name="jdbc/appdb_one"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"/>
</GlobalNamingResources>
context.xml
<ResourceLink name="jdbc/appdb_two"
auth="Container"
username="DBONE"
password="xxxx"
type="javax.sql.DataSource"
url="jdbc:oracle:thin:#xx.xxx.xxx.xxx:1521:XE"
initialSize="20"
maxActive="50"
maxIdle="20"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"/>
<ResourceLink name="jdbc/appdb_one"
auth="Container"
username="DBTWO"
password="xxxx"
type="javax.sql.DataSource"
url="jdbc:oracle:thin:#xx.xxx.xxx.xxx:1521:XE"
initialSize="20"
maxActive="50"
maxIdle="20"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"/>
...
I think you're looking up the second datasource via name "appdb_two", but should be using "jdbc/appdb_two" - it's hard to see from the stacktrace alone, code for lookup would be helpful.
Also check that your web.xml has references to both data sources (<resource-ref> elements).
On one developer workstation running Eclipse Helios SR2, Windows 7 and Tomcat 6.0.32 we have a very strange case of duplicate JNDI connection pools
Running tomcat from Eclipse
server.xml
>
<Context docBase="path to web app" path="/ds-web" reloadable="true">
<Resource
name="jdbc/ds"
username="ds"
password="pass"
type="javax.sql.DataSource"
url="jdbc:postgresql://localhost:5432/ds"
auth="Container"
driverClassName="org.postgresql.Driver"
factory="org.apache.commons.dbcp.BasicDataSourceFactory"
logAbandoned="true"
maxActive="30"
maxIdle="10"
maxWait="1000"
removeAbandoned="true"
removeAbandonedTimeout="60"
validationQuery="SELECT 1"
testOnBorrow="true"
testOnReturn="true"/>
</Context>
When start server, on the console we see the following 3 times in a row
AbandonedObjectPool is used
(org.apache.commons.dbcp.AbandonedObjectPool#11aa58b)
LogAbandoned: true
RemoveAbandoned: true
RemoveAbandonedTimeout: 60
Application then fails to find the JNDI resource
If we remove the <Resource> in server.xml, then the console shows no connection pool is created at all
On another developer machine with the same hardware and OS we do not have this problem
Any ideas?
Thanks
Marc
My suggestion, Copy the whole <Context> from server.xml and create a blank context.xml inside your web application META-INF folder and paste the <Context> copied from server.xml there.
Restart your application and see if this works.
We re-installed postgresql on the machine and the problem got solved somehow.
We're thinking something in the original postgresql config had been messed up and tomcat was failing to connect to the BD somehow. I guess tomcat was simply "trying 3 times", thus the triple output.
Another unsolved mystery...
move
<Resource
name="jdbc/ds"
username="ds"
password="pass"
type="javax.sql.DataSource"
url="jdbc:postgresql://localhost:5432/ds"
auth="Container"
driverClassName="org.postgresql.Driver"
factory="org.apache.commons.dbcp.BasicDataSourceFactory"
logAbandoned="true"
maxActive="30"
maxIdle="10"
maxWait="1000"
removeAbandoned="true"
removeAbandonedTimeout="60"
validationQuery="SELECT 1"
testOnBorrow="true"
testOnReturn="true"/>
to server.xml namely the
<GlobalNamingResources>
element
in your conf/context.xml file you would instead specify
<ContextLink name="jdbc/ds" global="jdbc/ds"/>
and this way, the three contexts will share the same pool.
How can we configure JNDI using tomcat server similar to JBoss server using jboss-web.xml?
Please help me on this?
I want to know which file we need to write it? or is there any programmatic way to do this?
Thanks in Advance,
Pravin
Write a context.xml
<Context>
<Resource name="jdbc/dbConnection"
auth="Container"
type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
url="j<url to database>"
username="user"
password="pwdt"
validationQuery="select 1"
removeAbandoned="true"
removeAbandonedTimeout="120"
maxWait="60"
maxActive="20"
maxIdle="10" />
</Context>
Here's a JNDI HOWTO from Apache on how to configure JNDI on Tomcat 6.
Related topic.
If you want a JNDI data source or something else, read the docs. They are quite detailed.