MySQL/JDBC. Use socket /tmp/mysql.sock NOT TCP/IP?

Does anybody know how to use the MySQL connector to use the file /tmp/mysql.sock to connect to MySQL locally? I can't find it in the docs. I currently don't have it running on any TCP/IP ports and figured there must be a way to use MySQL with Java without needing TCP/IP.
Cheers,
d11

Because the .sock file isa unix domain socket. This is normally not available on other OS's. So, the sock is platform dependent, and Java, at least usually, does not support strictly platform dependent features, you can not use it (at least not using the standard API's). If you search, real hard, you may find some hacks to do so, but they are exactly that, hacks.

Similar Messages

"Can't connect to local MySQL server through socket '/tmp/mysql.sock'"

Data Services=3.1
Repository=12.2.2.0000
Red Hat Enterprise 5
Designer,Job Server,Job Engine=12.2.2.3
After an unscheduled server reboot with DS up and running when trying to start a job in either Data Services Management Console or DS Designer getting the following:
"Can't connect to local MySQL server through socket '/tmp/mysql.sock'"
The mysql.sock have never been in /tmp and on the production server it does not exist there and the production server is up and running correctly. If a link is created to mysql.sock(/home/user/boedge31/bobje/mysql) the job will start but return this message:
"Cannot retrieve <Version> from the repository. Additional database information: <SQL submitted to ODBC data source <localrepo> resulted in error <MySQL ODBC 3.51 Driver mysqld-5.0.46-enterprise No database selected>. The SQL submitted is <select VERSION, SECURITYKEY, GUID from AL_VERSION where NAME = 'Repository Version'"
I checked and AL_VERSION and the Version field exist.
Before the shut down DS was working correctly and had no issues. My best guess is a part of the repository was corrupted during the unscheduled shut down. It seems like DS has "forgotten" some of the settings.
Any suggestions on a possible solution?

The issue has been solved.
There was a bad path in $LD_LIBRARY_PATH.
Removed the path and DS started working again.

./mysqlshow: Can't connect to local MySQL server through socket '/tmp/mysql

hi all ,I install mysql on Solaris 10 at first it work fine , but after I restart my PC and go back again I got error on
./mysqlshow: Can't connect to local MySQL server through socket '/tmp/mysql
I google , but still not sure how to deal with it
Thank you

I've just done a clean install of OSX Server and added the latest MYSQL packaged installer. Afterwards I found the lock file in /private/tmp/mysql.lock
The easiest way to solve this problem is to create a symbolic link so that the lock file appears to be in right place.
e.g.
cd /var
sudo mkdir mysql <== this assumes the directory is missing
cd mysql
sudo ln -s /private/tmp/mysql.sock mysql.sock
After this msql commands should work fine, and you've not fiddled with the security settings on users/groups.
HTH
Christian

Can't connect to local MySQL server through socket '/tmp/mysql.sock' (46)

I can't connect...I have th connection to the database form
DW to the db....I can't get the server to connect. HELP!

I've just done a clean install of OSX Server and added the latest MYSQL packaged installer. Afterwards I found the lock file in /private/tmp/mysql.lock
The easiest way to solve this problem is to create a symbolic link so that the lock file appears to be in right place.
e.g.
cd /var
sudo mkdir mysql <== this assumes the directory is missing
cd mysql
sudo ln -s /private/tmp/mysql.sock mysql.sock
After this msql commands should work fine, and you've not fiddled with the security settings on users/groups.
HTH
Christian

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'

PHP and Mysql aren't communicating on Mac OSX 10.4 and I
tried changing the location for where PHP looks for the file, but I
can't save in the etc folder. Help?

D**iesel wrote:
Apple made a presumption about MySQL and how it "should" be installed/configured.
You mean correctly?
Follow the instructions in this thread to properly configure PHP and MySQL on MacOS X: http://discussions.apple.com/thread.jspa?messageID=12229472&#12229472

Can't connect to local MySQL server through socket '/var/mysql/mysql.sock'

I'm using the pre-installed versions of php and mysql under Mac OS X Server 10.4.4 running on a G4 and am unable to get anything involving mysql to work.
I ssh to the server and enter various commands in Terminal:
on typing "mysql" I get
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (2)
and on typing "mysqladmin version" I get
mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (2)'
Check that mysqld is running and that the socket: '/var/mysql/mysql.sock' exists!
On typing "sudo mysqld_safe" I get
Starting mysqld daemon with databases from /var/mysql
STOPPING server from pid file /var/mysql/MyServer.local.pid
070722 16:06:05 mysqld ended
/var/mysql/MyServer.local.err contains
070722 16:06:04 mysqld started
070722 16:06:04 [Warning] Setting lowercase_tablenames=2 because file system for /var/mysql/ is case insensitive
070722 16:06:04 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
070722 16:06:05 InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 43634.
/var/mysql has permissions 775.
The line
mysql.default_socket = /var/mysql/mysql.sock
is in /etc/php.ini
whereis mysqladmin ->
/usr/bin/mysqladmin
whereis mysql ->
/usr/bin/mysql
ls /var/mysql ->
MyServer.local.err
ib_logfile1
mysql
ib_logfile0
ibdata1
test
Can't find my.cnf or my.ini anywhere
Can't find mysql.sock anywhere
I'm trying to get a bug database running (mantis) under Mac OS X Server 10.4.4 that I can access from local clients.
I'm trying to follow directions at http://www.mantisbugtracker.com/manual/manual.installation.php
without knowing anything about mysql or php and I'm stuck on step 3:
"Next we will create the necessary database tables and a basic configuration
file."
I get a message saying
"Does administrative user have access to the database? ( Lost connection to MySQL server during query )"
I don't even know if following the mantis directions has resulted in the creation of a database or not. Where would it be?
Thanks for any help.
Intel iMac Mac OS X (10.4.10)

I've just done a clean install of OSX Server and added the latest MYSQL packaged installer. Afterwards I found the lock file in /private/tmp/mysql.lock
The easiest way to solve this problem is to create a symbolic link so that the lock file appears to be in right place.
e.g.
cd /var
sudo mkdir mysql <== this assumes the directory is missing
cd mysql
sudo ln -s /private/tmp/mysql.sock mysql.sock
After this msql commands should work fine, and you've not fiddled with the security settings on users/groups.
HTH
Christian

ERROR#: 2002 can't connect to MySQL server through socket '/var/mysql/mysql.sock'

I was following this adobe article (
http://www.adobe.com/devnet/dreamweaver/articles/php_macintosh.html)
to set up PHP and MySQL and connect a MySQL database to dreamweaver
in Mac OS 10.4.8 and I kept getting:
"Can't connect to MySQL server through socket
'/var/mysql/mysql.sock' ERROR#: 2002".
After a lot of searching I came across
this
article which said that there was an error in the PHP and MySQL
connection or something.
Anyway all I had to do was type (in a TERMINAL window):
$ sudo mkdir /var/mysql
$ sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock
and that fixed the problem, otherwise the adobe article
worked very well.
Check out the "this article" link to get the fix straight
from the horse's mouth.

I was following this adobe article (
http://www.adobe.com/devnet/dreamweaver/articles/php_macintosh.html)
to set up PHP and MySQL and connect a MySQL database to dreamweaver
in Mac OS 10.4.8 and I kept getting:
"Can't connect to MySQL server through socket
'/var/mysql/mysql.sock' ERROR#: 2002".
After a lot of searching I came across
this
article which said that there was an error in the PHP and MySQL
connection or something.
Anyway all I had to do was type (in a TERMINAL window):
$ sudo mkdir /var/mysql
$ sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock
and that fixed the problem, otherwise the adobe article
worked very well.
Check out the "this article" link to get the fix straight
from the horse's mouth.

Connecting to mysql database using DBLOGIN

I am trying to connect to a mysql database through GG command interface and am unable to get the DBLOGIN to work correctly. Here is what I am getting:-
mysql world -u root -p<password> (as user OS user mysql- works!)
GGSCI (rac1) 5> DBLOGIN SOURCEDB world, USERID root, PASSWORD <password>
2010-11-08 16:29:17 WARNING OGG-00769 MySQL Login failed: . SQL error (2002). Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2).
ERROR: Failed to connect to MySQL database engine for HOST localhost, DATABASE world, USER root, PORT 0.
I am not too familiar with mysql and will appreciate help and also pointer to documents that walk through setting up and testing Golden Gate with mysql.
Thanks,
Satish

hi.
i have same problem can't connect to mysql using dblogin on ggsci, please helpme
this my.cnf configuration
# Example MySQL config file for small systems.
# This is for a system with little memory (<= 64M) where MySQL is only used
# from time to time and it's important that the mysqld daemon
# doesn't use much resources.
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /var/lib/mysql) or
# ~/.my.cnf to set user-specific options.
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password     = your_password
port          = 3306
socket          = /tmp/mysql.sock
#socket = /var/run/mysqld/mysqld.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port          = 3306
socket = /tmp/mysql.sock
#socket          = /var/run/mysqld/mysqld.sock
skip-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (using the "enable-named-pipe" option) will render mysqld useless!
#skip-networking
server-id     = 1
# Uncomment the following if you want to log updates
#log-bin=mysql-bin
# binary logging format - mixed recommended
#binlog_format=mixed
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
[mysqlhotcopy]
interactive-timeout

Using mysql jdbc driver leads to exception

I try to use com.mysql.jdbc.Driver with JDeveloper 9i business components. The following is the code I use to test if mysql driver works with business components:
package test;
import oracle.jbo.*;
import java.util.Hashtable;
import javax.naming.*;
public class Test {
public static void main(String[] args) {
final String amName = "test.TestModule";
final String voName = "test.TesttableView";
final String userName = "some_user";
final String password = "some_password";
final String connStr = "jdbc:mysql://localhost:3306/test";
System.setProperty("jdbc.drivers", "com.mysql.jdbc.Driver");
Hashtable env = new Hashtable(2);
env.put(Context.INITIAL_CONTEXT_FACTORY, JboContext.JBO_CONTEXT_FACTORY);
env.put(JboContext.DEPLOY_PLATFORM, JboContext.PLATFORM_LOCAL);
ApplicationModule appMod = null;
try {
javax.naming.Context ic = new InitialContext(env);
ApplicationModuleHome home = (ApplicationModuleHome)ic.lookup(amName);
appMod = home.create();
java.util.Properties props = new java.util.Properties();
props.put("user",userName);
props.put("password",password);
props.put("defaultRowPrefetch","15");
appMod.getTransaction().connect(connStr, props);
} catch(Exception e) {
e.printStackTrace();
ViewObject vo = appMod.createViewObject("vo", voName);
Row r = vo.first();
r.setAttribute("Testcolumn", "Some text");
System.out.println("vo before AppMod post " + r.getAttribute("Testcolumn"));
try {
appMod.getTransaction().commit();
System.out.println("Commit succeeded.");
} catch (oracle.jbo.JboException e) {
System.out.println("Commit failed. " + e);
r = vo.first();
System.out.println("vo after AppMod commit " + r.getAttribute("Testcolumn"));
Everything works fine until ViewObject.first() is called, then the following exception is thrown:
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.ClassCastException, msg=com.mysql.jdbc.PreparedStatement
     void oracle.jbo.JboException.<init>(java.lang.Throwable)
          JboException.java:344
     oracle.jbo.Row oracle.jbo.server.ViewRowSetIteratorImpl.first()
          ViewRowSetIteratorImpl.java:1156
     oracle.jbo.Row oracle.jbo.server.ViewRowSetImpl.first()
          ViewRowSetImpl.java:2240
     oracle.jbo.Row oracle.jbo.server.ViewObjectImpl.first()
          ViewObjectImpl.java:4345
     void test.Test.main(java.lang.String[])
          Test.java:32
## Detail 0 ##
java.lang.ClassCastException: com.mysql.jdbc.PreparedStatement
     void oracle.jbo.server.OracleSQLBuilderImpl.doStatementSetRowPrefetch(java.sql.Statement, int)
          OracleSQLBuilderImpl.java:894
     java.sql.PreparedStatement oracle.jbo.server.DBTransactionImpl.createPreparedStatement(java.lang.String, int)
          DBTransactionImpl.java:2695
     java.sql.PreparedStatement oracle.jbo.server.DBTransactionImpl2.createPreparedStatement(java.lang.String, int)
          DBTransactionImpl2.java:418
     java.sql.PreparedStatement oracle.jbo.server.DBTransactionImpl.createReUsePreparedStatement(java.lang.String, int)
          DBTransactionImpl.java:3467
     java.sql.PreparedStatement oracle.jbo.server.ViewObjectImpl.getPreparedStatement(int, boolean[])
          ViewObjectImpl.java:6496
     void oracle.jbo.server.QueryCollection.executeQuery(java.lang.Object[], int)
          QueryCollection.java:483
     void oracle.jbo.server.ViewObjectImpl.executeQueryForCollection(java.lang.Object, java.lang.Object[], int)
          ViewObjectImpl.java:2600
     void oracle.jbo.server.ViewRowSetImpl.execute(boolean, boolean)
          ViewRowSetImpl.java:521
     void oracle.jbo.server.ViewRowSetIteratorImpl.ensureRefreshed()
          ViewRowSetIteratorImpl.java:2197
     oracle.jbo.Row oracle.jbo.server.ViewRowSetIteratorImpl.first()
          ViewRowSetIteratorImpl.java:1141
     oracle.jbo.Row oracle.jbo.server.ViewRowSetImpl.first()
          ViewRowSetImpl.java:2240
     oracle.jbo.Row oracle.jbo.server.ViewObjectImpl.first()
          ViewObjectImpl.java:4345
     void test.Test.main(java.lang.String[])
          Test.java:32
Exception in thread main.
Is there anyone who would be able to help me with this problem?
Thank you in advance!

Use
Class.forName("com.mysql.jdbc.Driver");Is the MySQL JDBC JAR file listed in project path.?

MySQL jdbc speed

Hello,
I have a code - see below - which collects all fields of the available database tables. My problem is that this takes ~1sec with a Delphi code, but it takes ~15-20sec with the java implementation. It seems a little bit slow for me.
I made some performance tests and it seems that most of the time are spent in com.mysql.jdbc.ResultSet and com.mysql.jdbc.MysqlIO.
These 2 classes takes ~70% of the execution time. I use permanent connection. Is it possible to improve the speed with any trick?
Thanks!
My function wich is called for every database table:
   public ArrayList getFields(String tableName){
        logger.entry("getFields begin",this);
        ResultSet rs        = null;
        JFieldModel field   = null;
        ArrayList fieldList = new ArrayList();
        logger.info("Actual DB: "+database,this);
        String sqlStmt = "show full fields from "+tableName;
        rs = executeSQL(sqlStmt);
        try{
            while (rs.next()){
                field = new JFieldModel();
                field.setDbFieldName(rs.getString(1));
                field.setDbFieldType(rs.getString(2));
                field.setDbFieldNull(rs.getBoolean(3));
                field.setDbFieldDefault(rs.getString(5));
                fieldList.add(field);
        catch (Exception e){
            logger.error("getFields() - Exception during read",this,e);
        logger.exit("getFields end",this);
        return fieldList;
    }

There is no ability to run this on the command line, outside of Java and Delphi to get best case performance, which would be helpful, but not conclusive of anything.
The cursor types are identical (forward only / read only).
You are running the exact same queries that bring back the exact same results, so they will take the identical resources and time to execute on the database server(s).
You have determined that there is no issue with data conversion, which I believe is done by the ResultSet Object (where you are spending all your time).
Both the Delphi program and the Java program are executing on the same computer, so there is no difference in network latency, there is no difference in available CPU or memory and there is no difference in local disk access.
You are using similar if not the exact same logic in your Java and Delphi programs.
You have determined that Java ArrayList is not the cause of any slowdown.
You have ruled out the majority of issues that I know of that would have a profound effect on performance. With this test case, as is, I would say that Delphi is in fact 10x faster then Java when doing this task.
Having said that, it is very unusual for similar implementations to have this large of a performance discrepancy. Given similar circumstances, I personally would continue to research this because something of this magnitude is either a bug or a misunderstanding in the API. Unfortunately, in the test case as described, I don't have a trick that will increase Java / JDBC performance by 10x.
That doesn't mean others in this forum cannot offer better consul, but given the information provided, I don't have much to offer.

No suitable driver with com.mysql.jdbc.Driver

Ok. here's the issue. I have a windows box. (first problem) but let's pretend that it's ok. :) I installed Tomcat 4.1 installed J2SDK1.4.0
start serving pages GREAT!. I have Mysql working perfectly with PHP on this system. I JUST want to connect with JDBC :)
I've downloaded the MySQL Jdbc Connector/J 3.08 stable installed the .jar file in the $JAVA_HOME/jre/lib/ext as per the README
Now granted I am a little new to JSP. but I have checked over this again and again. used different code. connected as many ways as I can think of and I still get the same result.
Database Error :
No suitable driver
Please Try Some Other Time
So I figure it's a MYSQL issue. no I also went thru and did the Microsot connection to MS SQL 2000 with the same result.
Here's where the drivers are (tried using the other method for installing the MySQL connector as well, and my class path
Y:\j2sdk1.4.0\com\mysql\jdbc\Driver.class
com.mysql.jdbc.Driver.class
Y:\j2sdk1.4.0\org\gjt\mm\mysql\Driver.class
org.gjt.mm.mysql.Driver.class
My classpath is:
.;F:\j2sdk1.4.0\;F:\j2sdk1.4.0\bin\;F:\j2sdk1.4.0\lib\;F:\j2sdk1.4.0\lib\classes\
[ Here's The Enviorment]
Windows 2000 5.00.2195 SP3
MS SQL 2K SP3
Apache Tomcat/4.1.27
j2sdk1.4.0
MySql 3.23.57-nt
mysql Jdbc Connector/J 3.08 stable

<%@ page import="java.sql.*" %>
<%
Connection conn;
ResultSet results;
try      {
     String jdbc_driver = "com.mysql.jdbc.Driver";
     System.out.println("jdbc_driver = " + jdbc_driver);
     Class.forName(jdbc_driver).newInstance();
     catch (ClassNotFoundException cnfe)
     System.out.println(cnfe.getMessage());
try      {
     String url = "jdbc:mysql://localhost:3306/javatest?username=root,password=****"; // pass hidden
     conn = DriverManager.getConnection(url);
     System.out.println("connected to mySql DataBase");
     Statement stmt = conn.createStatement();
     Statement smt=conn.createStatement();
     results=smt.executeQuery("select * from testdata");
          while(results.next())
               %>
               <%= results.getString("foo")%>
               <%= results.getString("bar")%>
               <%= results.getString("id")%>
               <%
          results.close();
          conn.close();
     catch(Exception exp)
     %>
          <H3>Database Error : </H3><B><%= exp.getMessage() %></B><H3>Please Try Some Other Time</H3>
     <%
%>

BTW i aslo tried connecting to MicrosoftSQL 2K

<%@ page import="java.sql.*" %>
<%
Connection conn;
ResultSet results;
try      {
     String jdbc_driver = "sun.jdbc.odbc.JdbcObdcDriver";
     System.out.println("jdbc_driver = " + jdbc_driver);
     Class.forName(jdbc_driver).newInstance();
     catch (ClassNotFoundException cnfe)
     System.out.println(cnfe.getMessage());
try      {
     String url = "jdbc:odbc:contacts";
     String username = "javauser";
     String pw = "javauser";
     conn = DriverManager.getConnection(url, username, pw);
     System.out.println("connected to Msoft DataBase");
     Statement stmt = conn.createStatement();
     Statement smt=conn.createStatement();
     results=smt.executeQuery("select * from contacts");
          while(results.next())
               %>
               <%= results.getString("name")%><br>
               <%
          results.close();
          conn.close();
     catch(Exception exp)
     %>
          <H3>Database Error : </H3><B><%= exp.getMessage() %></B><H3>Please Try Some Other Time</H3>
     <%
%>

got the exact same results.
Just to show you mysql is Good. with localhost.
mysql -u root -h localhost -p
mysql> use javatest
Database changed
mysql> select * from testdata;
| id | foo | bar |
| 1 | hello | 12345 |
1 row in set (0.00 sec)
mysql>

Nope, it's not a MySQL issue.
I'd recommend NOT putting the JDBC JAR file (or any others, except Sun-sanctioned extensions) in JAVA_HOME/jre/lib/ext.
JDBC JARs belong in TOMCAT_HOME/common/lib or in the WEB-INF/lib directory for your particular app. If you put them in the former, all apps running under Tomcat can have access to them. If you put them in the latter, only your app can see them.
After you've done that, do some reading about JNDI data sources under Tomcat:
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html
That way you can get that connection code out of your JSPs and into the web.xml and <Context>, where it belongs. You'll be able to change data sources without rewriting your pages.
Good luck - MOD

Reading POST using Sockets

Hi,
I am writing a small webserver. I am trying to read the post requests using sockets however, I am not successful. I am able to read the GET requests though.
Any tips would be useful.
Thanks

hints:
1. look for the first double new-line ("\n\n" or "\r\n\r\n")
2. Then the query string will be similar to the GET method.
Example of POST using HTTP protocol:
POST /submit HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, */*
Accept-Language: en-us
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; YComp 5.0.2.5)
Host: 127.0.0.1
Content-Length: 55
Connection: Keep-Alive
Cache-Control: no-cache
field1=value1&field2=value2&field3=value3&field4=value4
As you see, the field1=value1&field2=value2&field3=value3&field4=value4 is similar to the GET method. It is just you need to read until you find "\n\n" or \r\n\r\n"
rgds,
Alex

Database error #2002 can not connect local mysql server to socket through '/var/run/mysqld/mysqld.sock'(2) on mac os x 10.9.2

Dear Fellas:
I received "database error #2002 can not connect local mysql server to socket through '/var/run/mysqld/mysqld.sock'(2)" on mac os x 10.9.2.
mysql info:
ps -ef | grep mysql
    0    66     1   0 11:06AM ??         0:00.04 /bin/sh /usr/local/mysql/bin/mysqld_safe --user=mysql
   74   225    66   0 11:06AM ??         0:02.50 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/usr/local/mysql/data/Chuans-MacBook-Pro-2.local.err --pid-file=/usr/local/mysql/data/Chuans-MacBook-Pro-2.local.pid --socket=/var/run/mysqld/mysqld.sock
501   952   947   0 3:52PM ttys000    0:00.00 grep mysql
Please help!!

Fascinated and guessing:
Something related to sock(2) because that's not part of your copied info. I'm thinking you've doubled up on sockets and the second socket doesn't exist, meaning you should be connecting to the first socket "mysqld.sock" whether automatic or not.
I've only used GUI tools on purpose, so does this mean you've already got MySQL running and you tried to launch it again manually? Perhaps you already have one instance of a db and you're trying to launch a second instance, and the two can't coexist with a single user local db?
Assuming this is all local, I'd shut down the db service and restart it, out of hand. I've seen similar messages when I set the db to start up on boot, and it didn't finish shutting down when I tried to restart it manually. Usually the GUI won't let me turn it on because it reports it's already running, but in that case it hadn't finished performing what the GUI was reporting.
Just speculating.

How can i work with Mysql using socket

hi
When i connect through mysql using socket
then can i send a query to mysql through socket.
if yes then how
retrive data which is performed by query
plz help me
THANKS

not like its not possible, but you better refer to JDBC instead of plain socket... its much easier and its already been done...
google for mysql jdbc tutorial or something...

Serious problem of jdbc-mysql connectivity using tomcat

hi everybody
i m in serious problem since last 15-20 days. i m trying hard to make the connection jdbc-mysql using tomcat with the help of a jsp test page but every time i am facing almost the similar probems listed below in detail:
to make sure that the jdrivers's .jar (mysql-connector-java-3.1.7-bin.jar) available for such connections working fine i have tried the above said connection without using tomcat....which is working fine...for this i have created a dummy database with a dummy table ..and written some queries in the .java file of my code which upon running inserts the specified values in the defined(dummy) database.
this is the confirmation that the classpath etc..are ok in regard to the mysql-connector-java-3.1.7-bin.jar
now i have placed a copy of this .jar file in to the commons/lib directory of the tomcat web server(which is suppossed to be the place for such external jars)
after doing so i have followed 2 methods :
method 1st:........
i have made aone more jar file from the following .java file....
import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class TestSQLLoad
String user = "Not Connected";
String pwd = "no pwd";
int id = -1;
public void init() {
try{
Context ctx = new InitialContext();
if(ctx == null ) {
throw new Exception("Boom - No Context");
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/TestDB");
if (ds != null) {
Connection conn = ds.getConnection();
if(conn != null) {
user = "Got Connection "+conn.toString();
Statement stmt = conn.createStatement();
String q = "select name, password, id from user";
ResultSet rst = stmt.executeQuery(q);
if(rst.next()) {
user=rst.getString(1);
pwd=rst.getString(2);
id = rst.getInt(3);
conn.close();
}catch(Exception e) {
e.printStackTrace();
public String getUser() {
return user;
public String getPassword() {
return pwd;
public int getID()
return id;
after compiling it at the cmd prompt i made a .jar file from the .class of it and named it MySQLLoad.jar...then i placed it also in to the commons/lib directory where the mysql-connector-java-3.1.7-bin.jar was already placed.
then i have changed the server.xml and web.xml files from the conf directory of the tomcat as given here:
server.xml



<Server port="8005" shutdown="SHUTDOWN">

<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<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" />
</GlobalNamingResources>


<Service name="Catalina">

<Connector
port="80" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />


<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />

<Engine name="Catalina" defaultHost="localhost">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context path="/testdb" docBase="TOMCAT_HOME/webapps/tomcat-docs/testdb"
debug="5" reloadable="true" crossContext="true" >
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TestDB">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>10</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>5</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>root</value>
</parameter>
<parameter>
<name>password</name>
<value>mysql</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:mysql://localhost/testdb?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>
</Host>
</Engine>
</Service>
</Server>
and the other xml file i.e
web.xml is here:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<servlet>
<servlet-name>default</servlet-name>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-cl ***>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jspx</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<mime-mapping>
<extension>abs</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ai</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aif</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aifc</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aiff</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aim</extension>
<mime-type>application/x-aim</mime-type>
</mime-mapping>
<mime-mapping>
<extension>art</extension>
<mime-type>image/x-jg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asf</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>asx</extension>
<mime-type>video/x-ms-asf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>au</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avi</extension>
<mime-type>video/x-msvideo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>avx</extension>
<mime-type>video/x-rad-screenplay</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bcpio</extension>
<mime-type>application/x-bcpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bin</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>bmp</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>body</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cdf</extension>
<mime-type>application/x-cdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cer</extension>
<mime-type>application/x-x509-ca-cert</mime-type>
</mime-mapping>
<mime-mapping>
<extension>class</extension>
<mime-type>application/java</mime-type>
</mime-mapping>
<mime-mapping>
<extension>cpio</extension>
<mime-type>application/x-cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>csh</extension>
<mime-type>application/x-csh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>css</extension>
<mime-type>text/css</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dib</extension>
<mime-type>image/bmp</mime-type>
</mime-mapping>
<mime-mapping>
<extension>doc</extension>
<mime-type>application/msword</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dtd</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dv</extension>
<mime-type>video/x-dv</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dvi</extension>
<mime-type>application/x-dvi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>eps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>etx</extension>
<mime-type>text/x-setext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>exe</extension>
<mime-type>application/octet-stream</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gif</extension>
<mime-type>image/gif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gtar</extension>
<mime-type>application/x-gtar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gz</extension>
<mime-type>application/x-gzip</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hdf</extension>
<mime-type>application/x-hdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htc</extension>
<mime-type>text/x-component</mime-type>
</mime-mapping>
<mime-mapping>
<extension>htm</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>hqx</extension>
<mime-type>application/mac-binhex40</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ief</extension>
<mime-type>image/ief</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jad</extension>
<mime-type>text/vnd.sun.j2me.app-descriptor</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jar</extension>
<mime-type>application/java-archive</mime-type>
</mime-mapping>
<mime-mapping>
<extension>java</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jnlp</extension>
<mime-type>application/x-java-jnlp-file</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpe</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpeg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jpg</extension>
<mime-type>image/jpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>js</extension>
<mime-type>text/javascript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jsf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>jspf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>kar</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>latex</extension>
<mime-type>application/x-latex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>m3u</extension>
<mime-type>audio/x-mpegurl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mac</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>man</extension>
<mime-type>application/x-troff-man</mime-type>
</mime-mapping>
<mime-mapping>
<extension>me</extension>
<mime-type>application/x-troff-me</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mid</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>midi</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mif</extension>
<mime-type>application/x-mif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mov</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>movie</extension>
<mime-type>video/x-sgi-movie</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp1</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp2</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mp3</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpa</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpe</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpeg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpega</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpg</extension>
<mime-type>video/mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>mpv2</extension>
<mime-type>video/mpeg2</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ms</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>nc</extension>
<mime-type>application/x-netcdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>oda</extension>
<mime-type>application/oda</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pbm</extension>
<mime-type>image/x-portable-bitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pct</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pdf</extension>
<mime-type>application/pdf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pgm</extension>
<mime-type>image/x-portable-graymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pic</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pict</extension>
<mime-type>image/pict</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pls</extension>
<mime-type>audio/x-scpls</mime-type>
</mime-mapping>
<mime-mapping>
<extension>png</extension>
<mime-type>image/png</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnm</extension>
<mime-type>image/x-portable-anymap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>pnt</extension>
<mime-type>image/x-macpaint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppm</extension>
<mime-type>image/x-portable-pixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ppt</extension>
<mime-type>application/powerpoint</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ps</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>psd</extension>
<mime-type>image/x-photoshop</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qt</extension>
<mime-type>video/quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qti</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>qtif</extension>
<mime-type>image/x-quicktime</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ras</extension>
<mime-type>image/x-cmu-raster</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rgb</extension>
<mime-type>image/x-rgb</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rm</extension>
<mime-type>application/vnd.rn-realmedia</mime-type>
</mime-mapping>
<mime-mapping>
<extension>roff</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtf</extension>
<mime-type>application/rtf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>rtx</extension>
<mime-type>text/richtext</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sh</extension>
<mime-type>application/x-sh</mime-type>
</mime-mapping>
<mime-mapping>
<extension>shar</extension>
<mime-type>application/x-shar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>smf</extension>
<mime-type>audio/x-midi</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sit</extension>
<mime-type>application/x-stuffit</mime-type>
</mime-mapping>
<mime-mapping>
<extension>snd</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>src</extension>
<mime-type>application/x-wais-source</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4cpio</extension>
<mime-type>application/x-sv4cpio</mime-type>
</mime-mapping>
<mime-mapping>
<extension>sv4crc</extension>
<mime-type>application/x-sv4crc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>swf</extension>
<mime-type>application/x-shockwave-flash</mime-type>
</mime-mapping>
<mime-mapping>
<extension>t</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tar</extension>
<mime-type>application/x-tar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tcl</extension>
<mime-type>application/x-tcl</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tex</extension>
<mime-type>application/x-tex</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texi</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>texinfo</extension>
<mime-type>application/x-texinfo</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tif</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tiff</extension>
<mime-type>image/tiff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tr</extension>
<mime-type>application/x-troff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tsv</extension>
<mime-type>text/tab-separated-values</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ulw</extension>
<mime-type>audio/basic</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ustar</extension>
<mime-type>application/x-ustar</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xbm</extension>
<mime-type>image/x-xbitmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xht</extension>
<mime-type>application/xhtml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xhtml</extension>
<mime-type>application/xhtml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xml</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xpm</extension>
<mime-type>image/x-xpixmap</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xsl</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xwd</extension>
<mime-type>image/x-xwindowdump</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wav</extension>
<mime-type>audio/x-wav</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svg</extension>
<mime-type>image/svg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svgz</extension>
<mime-type>image/svg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>vsd</extension>
<mime-type>application/x-visio</mime-type>
</mime-mapping>
<mime-mapping>

<extension>wbmp</extension>
<mime-type>image/vnd.wap.wbmp</mime-type>
</mime-mapping>
<mime-mapping>

<extension>wml</extension>
<mime-type>text/vnd.wap.wml</mime-type>
</mime-mapping>
<mime-mapping>

<extension>wmlc</extension>
<mime-type>application/vnd.wap.wmlc</mime-type>
</mime-mapping>
<mime-mapping>

<extension>wmls</extension>
<mime-type>text/vnd.wap.wmlscript</mime-type>
</mime-mapping>
<mime-mapping>

<extension>wmlscriptc</extension>
<mime-type>application/vnd.wap.wmlscriptc</mime-type>
</mime-mapping>
<mime-mapping>
<extension>wrl</extension>
<mime-type>x-world/x-vrml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>Z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>z</extension>
<mime-type>application/x-compress</mime-type>
</mime-mapping>
<mime-mapping>
<extension>zip</extension>
<mime-type>application/zip</mime-type>
</mime-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
after all this i have taken a jsp page whose code is here:
(the mysql database used is named as "testdb" and the table name is "user" which is having fields name,password and id)
<html>
<head>
<title>DB Test</title>
</head>
<body>
<%
TestSQLLoad tst = new TestSQLLoad ( );
tst.init();
%>
<h2>Results</h2>
User <%= tst.getUser() %>
Pwd <%= tst.getPassword() %>
Id <%= tst.getID() %>
</body>
</html>
and placed it in to the Tomcat 5.5\webapps\tomcat-docs\testdb directory and saved as test-db.jsp
when i run this page on the browser i get a lot may errors stating
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.j ava:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.4 logs.
AND NOW WHEN just to get rid of such errords i try to include a statement
<%@ page import="pkg.TestSQLLoad" %> in the jsp page code (and also place the MySQLLoad.class file in a folder called pkg and place it in the same directory where the jsp page is )and make it look like
<html>
<head>
<%@ page import="pkg.TestSQLLoad" %>
<title>DB Test</title>
</head>
<body>
<%
TestSQLLoad tst = new TestSQLLoad ( );
tst.init();
%>
<h2>Results</h2>
User <%= tst.getUser() %>
Pwd <%= tst.getPassword() %>
Id <%= tst.getID() %>
</body>
</html>
now when i run it i get the following errors:
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
Only a type can be imported. pkg.TestSQLLoad resolves to a package
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.j ava:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
in response to the above error i have even tried placing the MySQLLoad.class directly in the testdb folder along with the jsp page without keeping it in a package named pkg and then importing directly as <@page import="MySQLLoad" %>
that too gave me the following errors
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
The import TestSQLLoad cannot be resolved
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
An error occurred at line: 12 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.j ava:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
and if i do not use the statement <%@ page import="MySQLLoad"%> then also i get the errors like
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 11 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
An error occurred at line: 11 in the jsp file: /testdb/test-db.jsp
Generated servlet error:
TestSQLLoad cannot be resolved or is not a type
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.j ava:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
THE 2nd Method:
in my second method i did the same changes in the web.xml and server.xml
then i took a jsp page with the following code:
<%@ page import="javax.sql.*,java.sql.*,javax.naming.*,com.mysql.jdbc.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> trial doc </TITLE>
</HEAD>
<BODY>
<h1>Trial Document</h1>
<% InitialContext context=new InitialContext( );
DataSource dataSource=(DataSource) context.lookup("java:comp/env/jdbc/testdb");
Connection conn=dataSource.getConnection();
Statement stmt=conn.createStatement();
ResultSet rset=stmt.executeQuery("select * from user");
if (rset.next()){
%>
<table width="100%" border="1">
<tr align="left">
<th>name</th> <th>password</th><th>id</th>
</tr>
<%
do {
%>
<tr><td> <%=rset.getString(1)%> </td>
<td><%=rset.getString(2) %></td>
<td><%=rset.getString(3) %></td></tr>
<%
} while (rset.next());
%>
</table>
<%
} else{
%>
No results from query
<%
rset.close();
stmt.close();
conn.close();
context.close();
%>
</BODY>
</HTML>
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 15 in the jsp file: /testdb/Big1.jsp
Generated servlet error:
The type Connection is ambiguous
An error occurred at line: 15 in the jsp file: /testdb/Big1.jsp
Generated servlet error:
The type Statement is ambiguous
An error occurred at line: 15 in the jsp file: /testdb/Big1.jsp
Generated servlet error:
The type ResultSet is ambiguous
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.j ava:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
org.apache.jasper.compiler.Compiler.compile(C

thanx for ur response
as u said that the problem is more of a jsp page not getting compiled....
me also pointed towards the similar situation providing all the surrounding situations
which i have met and gone through
i m still thinking that problem may b in the tomcat's server.xml and web.xml as well
so better if u plz guide me in that regard
regards,
kuldeep

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