Re: connection problem - why idle

I don't really know for sure but you should probably be a bit more
carefull when closing your connections.
I personnally am extremly anal and do it as follows.

Connection conn = null;
ResultSet rs = null;
Statement stmt = null;
try {
// initialize conn, statements and resultsets here
// then do sql
// ...
rs.close(); rs = null;
stmt.close(); rs = null;
conn.close(); conn = null;
// you may also want to include something like this to see if
connection are ever closed
System.out.println("connection successfully closed in try");
}finally {
if(rs!=null) {
try { rs.close(); } catch(Exception e) {}
}
if(stmt != null) {
try {stmt.close();} catch(Exception e) {}
}
if(conn != null) {
try {conn.close(); System.out.println("connection successfully closed
in finally");} catch(Exception e) {}
}
}

If worst comes to worse you could maybe configure the tomcat connection
pool to start blocking at 99 connections.

>>> dinakar <din_akar(at)yahoo(dot)com> 03/05/04 10:30PM >>>
Hi All,

We have hosted an web application and now it is live.

s/w used : Apache, Tomcat 4.1.x, Postgresql 7.x

It seems that there is a major problem with the
database connectivity.

What we are seeing is that over a period of time the
database reports more and more connections from the
our web application until the connection limit (100 on
our setup) is reached.

this is a sample code i am using across application.

whether we need to release the connection explicitly ?

As of now i have not released the connection only i
have closed it .... ?

/*****************************************************/

-------------my db class-----------------
try {

this.setConnection(ConnectionPool.getConnection());
ArrayList arrList = new ArrayList();

con.setAutoCommit(false);
preStmt = con.prepareStatement("SELECT * from t");
resultSet = preStmt.executeQuery();

while (resultSet.next()) {
.....
.....
}
return arrList;
}
catch(Exception ex) {
sberror.append(ex.getMessage());
return null;
}

finally {
try {
con.setAutoCommit(true);
resultSet.close();
preStmt.close();
con.close();
}
catch (SQLException e) {
sberror.append(e.getMessage());
return null;
}
}

-----------my Connectionpool class-----------

public static Connection getConnection() {

Connection con = null;
javax.sql.DataSource ds;
try {
InitialContext ctx = new InitialContext();
ds = (DataSource)
ctx.lookup("java:comp/env/jdbc/postgres");
if (ds != null) {
con = ds.getConnection();
}
else
return null;
}
catch (Exception e) {
return null;
}
return con;
}

/*****************************************************/

please help...

Thanks,
Dinakar

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