Database Connection problem in WLS 7.0 Service Pack 7

Hi Guys,
I am a newbie in this forum. Currently, I tested running application using WLS 7.0 Service Pack 7 in Development environment. And for database I used Oracle 9i Release 2 v9.2.0.6 which is running on AIX OS. After WLS started, I had some error in connecting to database. This is the error that I found from log file :
java.sql.SQLException: Bigger type length than Maximum
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
at oracle.jdbc.driver.DatabaseError.check_error(DatabaseError.java:884)
at oracle.jdbc.driver.T4CMAREngine.buffer2Value(T4CMAREngine.java:2230)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB2(T4CMAREngine.java:1047)
at oracle.jdbc.driver.T4CTTIdcb.receiveCommon(T4CTTIdcb.java:111)
at oracle.jdbc.driver.T4CTTIdcb.receiveFromRefCursor(T4CTTIdcb.java:103)
at oracle.jdbc.driver.T4CResultSetAccessor.unmarshalOneRow(T4CResultSetAccessor.java:165)
at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:787)
at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:704)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:526)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:179)
at oracle.jdbc.driver.T4CCallableStatement.execute_for_rows(T4CCallableStatement.java:782)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1027)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2887)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:2978)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4102)
at weblogic.jdbc.pool.Statement.execute(Statement.java:298)
at EJB.Engine.EAIManagerBean.mtdRequest(EAIManagerBean.java:204)
at EJB.Engine.EAIManagerBean_lt8oqo_EOImpl.mtdRequest(EAIManagerBean_lt8oqo_EOImpl.java:46)
So, I need someone to solve my problem. Thanks...

First thing, most of BEA's forums are terrible as people rarely reply. I noticed your post through google searching for the same fix. You have likely done the same things as me and have learned that your Oracle JDBC Client driver has some bugs interacting with certain version of Oracle Server. For us, this problem occured when we migrated from Solaris to AIX. We were able to fix this by downloading the latest version of ojdbc14.zip from oracle's site. You can either replace the current ojdbc14 file in the bea installation or make sure it is visible in the classpath for WLS before the old version.
Here is a good link which describes the problem, good luck.
http://www.dbtalk.net/comp-databases-oracle-server/java-sql-sqlexception-bigger-type-289015.html

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(ADDRESS = (PROTOCOL = TCP)(HOST = namesrv1.xy.zz.com)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ONDSP101)
and my SQLNET as below:
AUTOMATIC_IPC = OFF
TRACE_LEVEL_CLIENT = ON
SQLNET.INBOUND_CONNECT_TIMEOUT=20
NAMES.DEFAULT_DOMAIN = na.pg.com
NAME.DEFAULT_ZONE = na.pg.com
SQLNET.CRYPTO_SEED = "kdg:9yv2$-plo*u6b2x!"
NAMES.DIRECTORY_PATH = (ONAMES,TNSNAMES)
NAMES.PREFERRED_SERVERS =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = TCP.xy.zz.com)
(PROTOCOL = TCP)
(Host = namesrv1.xy.zz.com)
(Port = 1522)
(ADDRESS =
(COMMUNITY = TCP.xy.zz.com)
(PROTOCOL = TCP)
(Host = namesrv2.xy.zz.com)
(Port = 1522)
I've placed my TNSNAMES and SQLNET file in the same folder having the instant client files and I've set my TNSADMIN,LD_LIBRARY_PATH and PATH environmental variable to the folder location.
Note:I'm able to connect to the database using SQLplus.
Thanks,
Bhagat

12637, 00000, "Packet receive failed"
// *Cause: A process was unable to receive a packet from another process.
// Possible causes are:
// 1. The other process was terminated.
// 2. The machine on which the other process is running went down.
// 3. Some other communications error occurred.
// *Action: If the cause is not obvious, contact Oracle Customer Support.
These days I very seldom use ODBC for Oracle - most recently it was simply to get Enterprise Architect to "talk" to Oracle. I never used it for my client applications (unlike in the fast distant past), so what I know about ODBC is seriously outdated.
Even so, a few comments. :-)
Have you tried creating a user DSN, in case a system DSN somehow works different environment wise?
The above error description sounds like the original TCP connection was successful (i.e. it is not a host unknown or not reachable error). Subsequent packets seem to fails.
To confirm, run the listener on namesrv1.xy.zz.com with logging enabled and have a look at the listener.log - does it show a connection being accepted/handled from your PC when you use the ODBC DSN?
Have you tried the Oracle ODBC drivers? When getting EA connected I had problems (also with Instant Client) and Microsoft ODBC driver for Oracle. Downloaded and installed the Oracle ODBC driver and it worked just fine first time around.
PS. You should raise this topic on the Instant Client Forum instead.

DATABASE CONNECTIVITY PROBLEM IN JSP

Hello Friends .
I am facing problem in database connectivity with JSP . Following is the code .
<%
String accessDBURLPrefix = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=";
String accessDBURLSuffix = ";DriverID=22;READONLY=false}";
String databaseURL = accessDBURLPrefix + "db1.mdb" + accessDBURLSuffix;
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
java.sql.Connection con = java.sql.DriverManager.getConnection(databaseURL, "", "");
out.println("Connection created sucessfully");
catch(Exception e)
out.println(e);
%>
It gives following output :
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not find file '(unknown)'.
If I run the code in core java application then it works sucessfully .
Plz help me to find the solution .
I am using sun studio Enterprise 8.1
have stored the access file in web direcotry in the project.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------

Please use CODE tags when posting code. You are losing some of the plus signs of string concatenation to the forum's formatting beast.
Preferred solution: Don't use Access as a database. The JDBC-ODBC bridge is always troublesome.
If you must use Access...
Well the message is easy enough to understand: it can't find the database db1.mdb.
You say you put db1.mdb in the web directory. Obviously the computer is not looking there (silly computer for not looking where you put the file)
So it is up to you to be smart and tell the computer exactly where to go.
Using application.getRealPath("/db1.mdb") in place of "db1.mdb" will probably work in a JSP.
String databaseURL = accessDBURLPrefix + application.getRealPath("/db1.mdb") + accessDBURLSuffix;cheers,
evnafets

Database Connection Problem on Linux

I have recently installed Oracle Database on a linux server. The app server that accesses db is JBoss.
Always, I end up seeing an error "java.sql.SQLException: No more data to read from socket".
To verify if the problem is with JBoss, I have written a simple stand alone java class to access the db, and ended up with the same error.
Can anybody help me out ??
-Aswin.

This error most likely occurs in applications that
use a database connections pool. When the application
checked out a connection that has been timed out or
has been staled, and used it to connect to the
database, this error occurs.
Could also be a result of connection timeout.Yeah! may be it is the result of connection timeout, but I am sure it cannot be realted to connection pool, because to verify if there were any configuration problems on JBoss, we have written a simple java class that directly accesses the database.
If it is because of connection timeout, how do i fix it ??

Database connection problem SQL Error: 20, SQLState: 61000

we are doing stress test on our new web site that uses vaadin framework and hibernate. Our application/web server is apache tomcat and maximum thread number is adjusted to 750.
we are using jmeter for stress test and when we send 500 user scenario (approximately 15 - 20 database connection per user) in 30 seconds
we are encountered the following error:
*14:43:10,502 WARN JDBCExceptionReporter:233 - SQL Error: 20, SQLState: 61000*
*14:43:10,503 ERROR JDBCExceptionReporter:234 - The Network Adapter could not establish the connection*
but if we send 500 user in 45 seconds there is no problem, jmeter test is completed with 100% success. even if we send 900 user in 120 or 180 second it is OK.
it seems that there is a DB related parameter that we could not handle properly or maybe operating system limitation (windows 2008 R2).
any help will be appreciated. thanks in advance.
gokhan
Edited by: gokhangulgezen on May 31, 2011 6:38 AM

It's the DBMS. Oracle particularly can react this way when there are too many connection requests
coming in, whether from multiple threads at once, or even from one thread in a tight loop. I do
not know if there's a way to moderate/adjust this. I typically recommend using connection-pooling,
and to do as much as possible to populate the pool before there is application load.
Joe

Database Connection Problem, JSP, Tomcat5.5.9, Oracle9i

hi,
Am trying to make database connection using Oracle9i thin driver, what am doing is:
I put classes12.zip and classes12_dms.jar in the classpath and also added these libraries in netbeans library folder.
I make jsp page like this --------
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@page import="java.util.*, java.sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Testing Page</title>
</head>
<body>
<%
String url = "jdbc:oracle:thin:@SERVERNAME:1521:DBNAME";
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection(url,"scott","tiger");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from person order by name");
%>
<h1>Testing Page</h1><hr>
<table border="1">
<tbody>
<tr>
<th>Name</th>
<th>Email</th>
</tr>
<% while(rs.next()) {%>
<tr>
<td><%= rs.getString(1)%></td>
<td><%= rs.getString(2)%></td>
</tr>
<%
rs.close();
stmt.close();
conn.close();
} catch(ClassNotFoundException CNFEx) {
out.println("<b>Error !</b><br>" + CNFEx.getMessage());
} catch(Exception Ex) {
out.println("<b>Error !</b><br>" + Ex.getMessage());
%>
</tbody>
</table>
</body>
</html>
when I run this page i got this error messages ----
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:138)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
root cause
java.lang.NoClassDefFoundError
oracle.jdbc.driver.OracleConnection.createDMSSensors(OracleConnection.java:506)
oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:330)
oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:485)
oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:337)
java.sql.DriverManager.getConnection(Unknown Source)
java.sql.DriverManager.getConnection(Unknown Source)
org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:79)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
any kind of help is appericiable.
thanks.....

I'd start by checking for a more recent driver version on Oracle's web site.
Or: googling for "createDMSSensors" (the "root cause" in the stack trace) has as the first hit: Re: Java Help Please! HttpServlet doFilter() Exception

CS4 database connection problem

I am running my own linux server with PHP and MySQL. CS4 will just not connect to the database though I can FTP to the website and hand coded dynamic pages work perfectly fine though any browser. The MySQL remote user has the usual select, insert, delete, update privileges and the username is in the form user%. PHPAdmin confirms the privileges as does Navicat which will connect with no problem. The working pages use a MySQL username that is not remote but with the same privileges.
Adobe is useless when it comes to describing the MySQL connection problem "unidentified error" which I keep getting. Any ideas gratefully received. ( I am running a laptop development M/C on XP SP3 which I want to make the connection with.
The connection box inputs are in the following form:
Connection name: myConnection
MySQL server: 123.123.123.123
User name: user%
Password: *******
Database: databaseName
Any help gratefully received.

I think you should implement a Singleton class.
something like this....
private static Connection conn = null;
public static Connection getDB(String arg1, String arg2) {
   if (conn == null) {
      // initiate your db connection
   // if db connection is already initiated
   return conn;
}This should be better. Your code has a flaw in that everytime you call getDbConnection(), a new database connection will be created, which of course, consumes both processing time and resource.
:D

J dev 11g database connection problem...

database connection can't be create..
We fill all of off necassery fields.
test the connection.
result is success".
but we can't say OK. OK button not work. So we can't save conection.

Ali,
as this appears to be installation specific, does this problem reproduce on another machine (if you have one around?). This could be a problem with locales, but I am not sure abouzt it.
Also, can you start JDeveloper from a commandline
jdeveloper_11_preview\jdev\bin\jdev.exe
This prints possible exceptions to the command window. When you create the database conenction, check if there is a new message written to this window
Frank

Database Connection problem in WLS 7.0 Service Pack 7

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