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Message from mrs
Most recent post: 1/28/2007
2 authors and 2 replies.

------=_Part_28322_17747153.1169134878979


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In respect of our commitment towards helping the less privileged, we ask that you voluntarily contribute 1% of your Global winnings to any
charity organization yo read more about GOOD NEWS! DO CONTACT ALAN J. BREWER


Message from ProgDario
Most recent post: 9/19/2006
2 authors and 6 replies.

Hi,

I'm using JAVA 5 with connector/j 3.1.13.

I've a stupid query with two string parameters.

When I set the parameters and execute the query, it simply does not
work, and the worst is that it does not show throw any exceptions. The
result set is empty.

If I do not use the preparedstatement, it works.

I'm really get frustrated with this. Any hint?Thanks!!Dario read more about Connector/j PreparedStatement DOESn't work


Message from Doug
Most recent post: 3/9/2006
2 authors and 2 replies.

Hello
I can not believe it at the whole thimg. Trying to establish a connection. Clearly I am doing something wwrong.

here it is

I've a jar file I am trying to execute. It contains :
Class-Path: /home/dkr/lib/jdom.jar
/home/dkr/lib/mysql-connector-JAVA-3.0.17-ga-bin.jar

Which finds the jdom.jar but return :
class not found JAVA.lang.ClassNotFoundException:
org/gjt/mm/mysql/Driver.class

When I run:

Class.forName(Parameters.getDbmDriver ());

Any body out there have any idea how I ****** this u?

Thanks for your time.

dkr read more about trying to "connect"


Message from rdifalco
Most recent post: 2/25/2006
2 authors and 2 replies.

Is there a way to lift the restriction on how much data can be written
to a LOB in MySQL from JDBC?

R.--
MySQL JAVA Mailing List
For list archives: http://lists.mysql.com/JAVA
To unsubscribe: http://lists.mysql.com/JAVA?unsub=3Dmysql-JAVA@xxxxxxxxxxx read more about DataTrunctation error when BLOB/CLOB greater than 64K


Message from "CalAmity!"
Most recent post: 2/17/2006
2 authors and 6 replies.

Scenario:
=========
Data Query
--------> -------->
[Web Brower] [Apache Tomcat] [mySQL]
<-------- <--------
Display Results* Web Server hosts servlets and JSP.

* Web browser connects to Web Server
fetches query parametrs from the
user.

* Once parameters are submitted,
Data is sent to WebServer.

* Webserver runs servlets write an
appropriate query and fetch data
from mySQL.

* Result is displayed on user's browser.Question:
=========
The table I query is a Downloads Log.
So for some queries a very large amount
of data may be returned (say about 800-
1000 rows). I need to display this data
systematically 50 records at a time in
the web browser.
If anyone out there a solution to this
problem then please reply back.

Thanks in advance :) read more about Handling numerous rows from SQL query


Message from pwallace
Most recent post: 11/11/2005
2 authors and 2 replies.

------_=_NextPart_001_01C5B735.E89B9367


Hi,
I am having trouble inserting and retrieving Asian characters in my
DB. I've set up my table thus:
=20
CREATE TABLE `messages` (
`id` int(10) unsigned NOT NULL auto_increment,
`message_body` text NOT NULL,
`sender_number` text NOT NULL,
`shortcode` text NOT NULL,
`image` longblob,
PRIMARY KEY (`id`)
) CHARACTER SET utf8 TYPE=3DMyISAM;=20
=20
and am inserting using a PreparedStatement -
pstmt.setString(indexOfColumnInQuestion, asianTextString); to insert in
to message_body. However, when viewing the column in Query Browser, and
retrieving it from a ResultSet, it reads ????????????? ??? ???? and so
on (I am attempting to insert Thai characters in this instance).
=20
Am I not doing all to spec?
=20
thanks and regards
=20
Paul.

------_=_NextPart_001_01C5B735.E89B9367-- read more about Unicode insertion in 4.1


Message from gokhan.demir
Most recent post: 4/22/2005
2 authors and 2 replies.

Hi,



I've just downloaded the mysql 3.1.8 driver. After reading the manual, I
have seen that I can use the new, specific exception sorter and connection
validity checkers classes for JBoss. Since com.mysql.jdbc.integration.jboss
package isn't in the 3.1.8 jar file, I manually added the two jboss
specific classes to the jar and then updated my connection cache xml file to
reference the two classes. On start, JBoss complains that it cannot find the
classes although I doubly made sure I've correctly put the two classes in
the 3.1.8 jar file and copied it to the correct jboss servername/lib folder.

What am I doing wrong and hence failing to make this work?



Best Regards,

Gokhan



P.S.: Here is part of what is logged by JBoss 4.0.1sp1 startup:

17:57:04,039 WARN [LocalManagedConnectionFactory] Exception trying to
create connection checker (disabling):

JAVA.lang.ClassNotFoundException: No ClassLoaders found for:
com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker

at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.JAVA:198)

at
org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoad
er.JAVA:464)

at
org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.j
ava:374)

at JAVA.lang.ClassLoader.loadClass(ClassLoader.JAVA:235)

at
org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnectionFactory.isValidC
onnection(BaseWrapperManagedCon read more about 3.1.8 and JBoss exception sorter & validity checker classes


Message from ankush1711
Most recent post: 2/22/2005
2 authors and 2 replies.

Hey,

We are trying to use mysql with Jdeveloper(9.0) build.When ever we try
to run the jdeveloper to execute the program we get the following
error. Error creating table: You've an error in your SQL syntax. Check
the manual that corresponds to your MySQL server version for the right
syntax to use near '@xxxxxxxxxxx (autoid BIGINT not
null primary )

The user has the right to access the database from any machine in the
LANand also we've created primary key on the table but the problem
persists..What changes we've to make so that we are able to execute
programs in jdeveloper accessing mysql database.

Mysql is on debian and I can access the same database with query
browser and even the connection with jdeveloper shows success.

Thanks & Regards

Ankush Grover

--
MySQL JAVA Mailing List
For list archives: http://lists.mysql.com/JAVA
To unsubscribe: http://lists.mysql.com/JAVA?unsub=mysql-JAVA@xxxxxxxxxxx read more about mysql + jdeveloper


Message from axelmuench
Most recent post: 2/9/2005
2 authors and 2 replies.

Hi,

Since we upgraded our staging server from Connector/J 3.0.14+ to
Connector/J 3.1.16 ( on mysql 4.1.17) we receive for any SQL
PreparedStatements ending in "LIMIT ?,?" a JAVA.sql.SQLException:

You've an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near '?,?' at
line 1

Example:
private static final String PRODUCT_BY_RANGE_LIMIT = "SELECT * FROM
Product LIMIT ?,?";
~cut
prepStmt.setInt(1, index);
prepStmt.setInt(1, range);
~cut
Anybody else came across this problem?

Thanks,

Axel--
MySQL JAVA Mailing List
For list archives: http://lists.mysql.com/JAVA
To unsubscribe: http://lists.mysql.com/JAVA?unsub=mysql-JAVA@xxxxxxxxxxx read more about Connector/J 3.1.16 LIMIT Exception


Message from lbrtchx
Most recent post: 6/17/2004
5 authors and 5 replies.

Hi,

I, as a JAVA developer, find myself constantly switching among
different DBMS.

The JDBC easies it greatly, but I am thinking about a Portable DATA
Layer kind of functionality to aliviate the problems when you must do
that.

Notice I am not talking aobut connection pooling or persistence
manager!

Here are some of the problems I'd like to rid of my mind:

1._ A change of DBMS should only require a one-line change in a
properties files

DataLayer DL = new DataLayer("_.propeties");


2._ SQL statements should be declared outside the code entirely, so
that admin people and DBAs can look at the damage we devs are doing
:-) 3._ Changes in the SQL statements ('We' constantly change the Data
Tables and Structures during dev)
I do not want to have to touch the code if I change the Data layer.
Say, a new column is included in the Table

4._ I'd love to query a DBMS like you call a method, without
having to worry about getInt's, and getString's things;

something like:

ResultSetRecordsObjs[] RSO02 = DL.preparedStat("SELECT
...").getRecordObjects();

Then you'd simply go:

. Request.setAttribute("RSO02Ar", RSO02);

. grab the array of objects containing the returned records
information in a jSP and display the results.

Notice that only the JSP would've to be changed possibly by a
knowledgable designer.

Do you know of something like that already out there (preferably open
source :-))? read more about Portable JAVA Data Layer based on JDBC


Message from lbrtchx
Most recent post: 5/3/2004
4 authors and 5 replies.

I was wondering about ways to kinda standardize the non SQL92
compliant MySQL-specific "LIMIT" clause

http://dev.mysql.com/doc/

with JDBC.

Say you only need to SELECT a given number of records at a time.

I think (and I am NOT a DB speciallist) that you ease the DB engine's
work if you just tell it:

'I only need the next 3 records';

since it might optimally be a one-time operation.

Maybe this is very QOI (quality of implementation) issue, but I
think, if you iterate over a ResultSet object and then break out of
the look when you've the number of records you need you might tax
the DB eng. more than if you just tell it how many records you need
beforehand.

Am I correct?

Are there ways to stream line this other than simply using MySQL or a
DB that supports it :-)?

What'd you suggest? read more about MySQL's LIMIT with JDBC


Message from mufaddal
Most recent post: 1/28/2004
2 authors and 2 replies.

--Apple-Mail-1-197792120
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
charset=US-ASCII;
format=flowed

Hi,

I am using mysql-connector-JAVA-3.0.8-stable-bin.jar and mysql version
4.0.16.

I am using the connection pooling mechanism to create connections to 3
databases. (30 connections each .. therefore 90 connections total.)

When I try to increase this to 50 connections per database I get
exceptions that there are too many connections. Is there a way to tell
mysql to allow
1. unlimited amount of connections
OR
2. a particular number of connections.

I used mysqld --help and saw that the:

max_connections 100
max_tmp_tables 32
max_user_connections 0

So how do I increase or make the number of connections unlimited? Also
if this is possible what other values do I've to adjust?

Thanks.
--Apple-Mail-1-197792120-- read more about Number of connections ... how to increase?


Message from chitrapandian
Most recent post: 1/25/2004
2 authors and 2 replies.

We are facing problem in starting mysql [MySQL 3.23.58] in Solaris 8
platform and exception is thrown 'Fatal error: can not change to run as
user 'mysql' ; Please check that the user exists!'.

I've tried using using either root or specific user.

If I check MySQL logs by viewing
/opt/mysql/data/<hostname>.err040119 09:34:32 mysqld started
Fatal error: can not change to run as user 'mysql' ; Please check that
the
user exists!
040119 9:34:32 Aborting
040119 9:34:32 /opt/mysql/bin/mysqld: Shutdown Complete
040119 09:34:32 mysqld endedI have tried several times to install it, but still get the same error.
Any
clue on that problem ?Any help to solve this problem is really appreciated.

Regards,
Chithuu ..! read more about [SOLARIS - MySQL 3.23.58] Fatal error: can not change to run as user 'mysql' ;


Message from mufaddal
Most recent post: 1/22/2004
2 authors and 2 replies.

Select * from user where username = 'Alex';

The above query'd return a result set in which alex, ALEX, Alex ,
aLEx etc appears.

In other words its not a case sensitive operation.

What do I do in order to make a case sensitive comparison?

Thanks.--
MySQL JAVA Mailing List
For list archives: http://lists.mysql.com/JAVA
To unsubscribe: http://lists.mysql.com/JAVA?unsub=mysql-JAVA@xxxxxxxxxxx read more about case sensitive comparison ?


Message from lopes
Most recent post: 1/22/2004
2 authors and 2 replies.

I'm trying to make an updatable JdbcRowSet, I already read a previuos
question in this mailing list and follow the sugested items but I cant make

it work.

my table has a primary key, in my select statement I only select one table
(no joins), I force the JdbcRowSet to be CONCUR_UPDATABLE but it doesnt
work.

What I would like is somebody tell me what an I doing wrong, give an
example or tell me wich class do I have to hack, patch or something like
that to make it create an updatable resulset by default like 2.x driver
did. (i know this isn't jdbc compilant) My code is:

Class.forName("com.mysql.jdbc.Driver");
conn =
DriverManager.getConnection("jdbc:mysql://127.0.0.1/adatabase","root","");

rowset = new JdbcRowSetImpl(conn);
rowset.setType(ResultSet.TYPE_SCROLL_SENSITIVE);
rowset.setConcurrency(ResultSet.CONCUR_UPDATABLE);
rowset.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);

rowset.setCommand("SELECT * FROM atable");
rowset.execute();

rowset.moveToInsertRow();

In the last line I get the Exception:
Result Set not updatable.This result set must come from a statement that
was cre
ated with a result set type of ResultSet.CONCUR_UPDATABLE, the query must
select
only one table, and must select all primary keys from that table. See the
JDBC
2.1 API (application programming interface)Specification, section 5.6 for more details. But I set the JdbcRowSet to ResultSet.CONCUR_UPDATABLE, my query slect only

one
table, m read more about Updatable JdbcRowSet


Message from kate
Most recent post: 12/30/2003
2 authors and 2 replies.

------_=_NextPart_001_01C3CE75.536836A0
Content-Type: text/plain;
charset="iso-8859-1"

MySql Version: 4.1.1-alpha
MySql Connector/J Version: 3.0.9-stable

I was using 4.0 before, and I was able to connect using JDBC. I switched to
4.1 alpha, and I'm getting the following exception:

ConnectionFailure: JAVA.sql.SQLException: Invalid authorization
specification, message from server: "Access denied for user:
<mailto:'dba'@xxxxxxxxxxx'localhost'> 'dba'@xxxxxxxxxxx'localhost' (Using password: YES)"

I created a user called dba:
grant all privileges on mysql.* to 'dba' identified by 'dba';

I'm using the same exact JAVA code to connect as I was using with mysql
version 4.0.

Thanks for your help,

Kate


------_=_NextPart_001_01C3CE75.536836A0-- read more about Access denied in 4.1.1


Message from chitrapandian
Most recent post: 10/22/2003
2 authors and 2 replies.

Dear All,

Database product version=3.23.41
Database driver name=MySQL-AB JDBC Driver
Database driver version=3.0.8-stable ( $Date: 2003/05/19 00:57:19 $,
$Revision: 1.27.2.18 $ )

Our application is an Multi-Threaded JAVA based application and uses 6
MySQL connections to do various database transactions, and also we
maintain PreparedStatement cache (200 per Connection), meaning we
cache the PreparedStatement based on the SQL in a cache and use that
cached PS for subsequent db operations.

We are sure that, all are "SELECT" SQLs executed using executeQuery
methos, no other SQLs and also Database Connection are in normal state
only.

Now, we are continously facing this after running our for 2-3 hrs., we
aren't sure where the problem is, following are the various
exceptions
thrown continously and the complete database is corrupted with invalid
data, now the only way to recover from this is to reinitialise and
restart our
application.

This is an highly critical issue. Kindly, guide us to debug the
problem @xxxxxxxxxxx the earliest.

-----------------------------------------------

22:33:39:995 PM JAVA.sql.SQLException: Column Index out of range ( 3 >
1).
22:33:39:995 PM at com.mysql.jdbc.ResultSet.getString(ResultSet.JAVA:1749)
22:33:39:995 PM at com.adventnet.nms.store.relational.RelationalObject$ForUserPropGet.fillUserProperties(RelationalObject.JAVA:1761)
22:33:39:995 PM at com.adventnet.nms.store.relational.RelationalObject.getObject(RelationalO read more about Exception : ResultSet is from UPDATE. No Data


Message from mufaddal
Most recent post: 10/16/2003
2 authors and 2 replies.

I had posted a message earlier yesterday and I realized that the result I was trying to get wont be the result of the query I was writing.
Could someone help me on this please -

I've table survey:

+----+----------+---------+
| ID | NAME | ENABLED |
+----+----------+---------+
| 1 | Survey1 | 1 |
| 2 | Survey2 | 1 |
| 3 | Survey3 | 1 |
| 4 | Survey4 | 1 |
| 5 | Survey5 | 1 |
+----+----------+---------+

table res:
+----+--------+------+------------------+
| ID | USERID | TYPE | SURVEYID |
+----+--------+------+------------------+
| 1 | 1 | 1 | 1 |
| 2 | 1 | 1 | 2 |
| 3 | 1 | 1 | 3 |
+----+--------+------+------------------+

I want all the survey records that follow the rule -- survey.id isn't
in res.surveyId. For example considering the example data in the two
tables, when I run the query the result should've (4, survey4, 1) and
(5, survey5, 1).

Could someone help me formulate the query ?

Thanks.--
MySQL JAVA Mailing List
For list archives: http://lists.mysql.com/JAVA
To unsubscribe: http://lists.mysql.com/JAVA?unsub=mysql-JAVA@xxxxxxxxxxx read more about question ....


Message from Hengeltje
Most recent post: 8/17/2003
2 authors and 2 replies.

I'm just getting started and I already have a problem:(

I inserted several rows by inserting an txt-file, but the tabs weren't
correct. So I want to delete all rows in the table. Unfortunatelly I can not
find information about how to delete the rows. Who can help me? read more about Delete row


Message from rhino1
Most recent post: 8/4/2003
2 authors and 2 replies.

Can anyone sent me or point me to an example of a program that inserts a =
file like a JPEG or GIF into a Blob column of a MySQL table via a JAVA =
program?

I've several years of experience with DB2 and can do this task in a =
JAVA program that talks to DB2 but the same program, modified to insert =
data into a MySQL table, does not seem to be working. There are no error =
messages but when I look at the table row, instead of a long string of =
hex digits, I get a few characters, like =FF=D8=FF=E0, and nothing else. =
That makes me believe that my insert failed for some reason. If I look =
at the DB2 table after I insert the same Blob, I get a long string of =
hex digits like x'A9B4C3' .... etc. etc.

Can anyone help me with a working example of inserting a Blob? That =
should help me figure out what needs to be done differently for MySQL =
than DB2. Or'd you prefer that I post my code so that you can help =
me figure out what I'm doing incorrectly?

Rhino
---
rhino1 AT sympatico DOT ca
"If you want the best seat in the house, you will have to move the cat." read more about Insert Blob Example




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