Unable connect to SQLServer

Question

I using JDBC driver (Microsoft SQL Server 2000 Driver for
JDBC) to access Database (SQLServer 2000).
I using NonXA-Datasource
driver: com.microsoft.jdbc.sqlserver.SQLServerDriver
INDI name : jdbc/SqlServer
url : jdbc.microsoft.sqlserver://local:1433;user=testuser;password=testpass;databasename=TestDB
reference name: jdbc/TestDB
I had set J2EE_CLASSPATH to classpath of jar file (msbase.jar,mssqlserver.jar,msutil.jar)
function makeconnection :
private void makeConnection() throws NamingException, SQLException {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup(dbName);
con = ds.getConnection("testuser","testpass");
with dbname
private String dbName = "java:comp/env/jdbc/TestDB";
But when I run application, I receive exception 'unable to connect to database'
Can you help me? Thanhs.
Leb.

Answer 1

What is your JNDI provider? Is it Weblogic? Or some LDAP scheme?
The reason I ask is that you specify
DataSource ds = (DataSource) ic.lookup(dbName);which means that should already have loaded a 'pool' ( even if you just specified one )? So some application server is managing a 'pool' of DataSources for you. Which also means that if you arent getting a connection with
ds.getConnection();The pool is never being built properly.
Now it is my understanding that you should typically provide your pool with username and password so it can actually load the pool ( test connections even ) when the app server starts or the context loads. If you don't, then you arent getting connected, and the pool return empty DataSource objects which you'll try to connect to afterward as you are doing unsuccessfully.
So by this rationale, there is a problem in your configuration of the datasource itself. Check that in fact the class is in your classpath and being loaded, and that the datasource configuration is valid.
If you can though, please be more specific about the situation ( app server etc ).
L
I using JDBC driver (Microsoft SQL Server 2000 Driver
for
JDBC) to access Database (SQLServer 2000).
I using NonXA-Datasource
driver: com.microsoft.jdbc.sqlserver.SQLServerDriver
INDI name : jdbc/SqlServer
url :
jdbc.microsoft.sqlserver://local:1433;user=testuser;pas
word=testpass;databasename=TestDB
reference name: jdbc/TestDB
I had set J2EE_CLASSPATH to classpath of jar file
(msbase.jar,mssqlserver.jar,msutil.jar)
function makeconnection :
private void makeConnection() throws
s NamingException, SQLException {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup(dbName);
con = ds.getConnection("testuser","testpass");
with dbname
private String dbName = "java:comp/env/jdbc/TestDB";
But when I run application, I receive exception
'unable to connect to database'
Can you help me? Thanhs.
Leb.