MYSQL :: How To Find Out If A Msql Table Is Locked From A Php Script

Msql Table Structure
I'm planning(and just started) to set up a webshop. To use this webshop everyone has to register themself first with personal information, like address, where they live, phone number, birthdate, username, password, email etc.
Also I'd like to store some information on what they have bought, referance number of products they have bought, personal statistics and so forth.
I'm all new to mysql, so I'm sorry if this may sound like a stupid question.
How should the table be set up? Is all this info I mentioned above too many cells for one mysql table? Should I use many tables or would it work good with just one?
If I should have many tables, how do I interconnect with them? like if I had one table for logon info, and another table for products/shoppingcart, and another for personal information.

Trying Abort One Select Accessing One Table Locked By Lock Table.
I'd like to configure one time to abort one transaction that are accessing one table locked by lock table write command ex:

Transaction A
mysql> start transaction;
mysql> lock table mytable write;

After I'll start new transaction B (another connection)

mysql> start transaction;
mysql> select * from mytable;

It's will become long time to wait...

My transaction B never "die".

I tried to configure innodb_lock_wait_timeout=20 in my.ini without success,

Table Locked
I tried to UPDATE and INSERT into a table, but it seems like the table is locked or something. When I execute this two commands, it just hang. But it'doing fine on SELECT.

List A Locked Table
I try to Lock and unlock certain tables from my database test using JConnector (mysql jdbc lattest version) and I found out that the unlock command is not actually works. Now my database is occupied by these locked tables. How do I see a list of Locked tables in mysql and How do I get rid of that so I can unlock the tables.

Access > Odbc > Mysql | Locked Table?
i have a mysql db and an odbc connection setup to it under user root. i need the odbc connection so i can have connectivity in access 2000. select queries work fine. i can view the tables in access etc.

however update queries won't work for me. i know last week it worked, and this evening after it not working i opened up another copy of the database and it worked on that one... but only once, i went back and it didn't work in that one either.

and for the life of me i cannot figure out what would be different with the database now.
the error i'm getting is just the generic: "can not update 3 records due to lock violations"

however, what is locking odbc/access out of the mysql db? is it mysql? is it odbc? or is access locking the records? im sure it isn't mysql, and i think it is odbc but i don't know where. i downloded new drivers for odbc. i thought about updating the access jet engine but couldn't find updates... Code:

Can't Find Table Error, Even Though Table Exists
I use the following query:

SELECT * from ads where user!='$id' and ready=1 and category='$category' and main.id=user and main.credits>4;

And it returns #1109 - Unknown table 'main' in where clause

But the "main" table exists. What gives?
I've tried it with other tables in the same database and it says that they all don't exist.

Any ideas?

Msql Database Set Up
I have created a php site with a mysql database on my win XP pro machine. I used Myphpadmin to create the database locally. I have added about 150 records to the database. Now, everything is working perfect.

How do I export that to my host site with out having to do go to myphpadmin on the host site and re create the database manualy? Meaning is there a way I can create a file that i can just import from my host server? Are there any tools that I can use to do this?

Populate My Msql
have created a database on ...,I have a "php" program (easybidder) i want to upload to the database and run it.

Msql&putty
i'm using MySQL for Dbase. how can i find the manual/tutorial for mysql in putty? can you help me? i'm looking forward that information from you.

Running 2 Msql Servers
I want to run two mysql server on the same win xp machine independent of each other: one on 3306 and one on 3309. How and what files do I have to modify to set the second server port to 3309 permanently.

Msql SET Type Column
If I have created a table including a set type field and I am using a multiple checkbox type form to load data how do I do this? nothing I do seems to work the elements in SET have been predefined, however only one option wll load into the database when I should be getting two or more, can anybody assist,

MSQL Used As Oscommerce Database
I have installed MYSQL server 5.0.45 to use as a database for a Konakart, oscommerce
shopping cart application. Will I need to load all my product/price and descriptions in the MYSQL database tables?

A database and tables are configured in MYSQL during the Konakart installation process. Specific product names are not included during the install process only a generic database and the tables, e.g. product name, product description etc.

However the ability to specify my products,descriptions, prices etc. are provided for in a Konankart admin application,(TomCat server)separate from the shopping cart itself. Will this also load this info into the MYsql database?

I have an existing web site with a java script shopping cart presently. I want to utilize the Konakart oscommerce cart on my existing web site after configuration with product info on my present site. Is there a way to transfer this product info i.e. description, price, shipping costs to the MYSQL database or to the oscommerce program?

Msql Update Query
I am trying to tie a mySQL UPDATE query to a variable in php to determine whether or not the query updated any rows or not. All it returns is whether or not the query was successfully executed.
I have tried using the mysql_affected_rows() command, but as there are multiple users performing the same action this could lead to ambiguous results.

Trouble Moving My Msql Database....
Ok, now i've really done this so many times and it's never worked. Basically my current host is really really bad, and i fear it's soon going to close down. My site is a clan, and we really need our forums to be up 24/7.

So basically i wanted to move host.

I found a good host, and so i downloaded a msql backup in cpanel.

And tried to transfer it through "backup" uploads in cpanel in the new host, and my computer freezes. What happens is, it keeps on saying "transfering from 1.127 etc. or transfering from {host url}" and does this for ages. And so i have to close it down and restart computer.

Now when i go to php admin, i can only see 100 tables, when there should be 127, on TWO occasions it's been the same...

And i got IPS errors in my ipb forums when i try to go to link.

So then i try doing it from phpmyadmin, and what happens:

"this {username} does not have correct permission for this database" or something like this. all i want to do is move my database across without any problems. i kno i might have gone wrong somewhere?

Mysqldump Can't Find Table
I'm trying to do a backup of just 1 table but when I run the command mysqldump -h machine -u lagoona -p database_name [collection] > collection.sql
it complains that it can't find the table called collection which is definitely in the database. mysqldump: Couldn't find table: "[collection]"
Is this the right command to use, I'm not that familiar with mysqldump? It's on linux and I'm running it from the command line. I can connect OK to the database itself when I use the command mysql -h machine -u lagoona -p
I've also tried it as root and as my own username but no difference.

Find Names Of Every Table In A DB Using PHP
I have a database where each username has their own table, and Im making it so that instead of a ba-zillion tables, there will be just two. But I need a way to find the names of every table in my MySQL DB. I searched google and came up empty handed.

Where To Find Table Prefix
I'm trying to convert my forum to PBPBB3 from PHPBB2 and its asking what my table prefix is. Where can I find this?

Find The Size Of The Table
Is there any function OR any way to find a size of the table?

Let us assume the table contains the 3 rows and 4 columns, if i add the one more column does this increases the table size. How to find the size of the table?

Find Rows In One Table
I am setting up an osCommerce store and have discovered that some products do not have corresponding entries in the categories table. I need to find these items (there are roughly 5000 items) so that they can be fixed.
These are the relevant tables:

Table Name: products
Primary Key: products_id

Table Name: products_to_categories
Primary Keys: products_id and categories_id

I need to find all rows in products that do not have a corresponding entry in products_to_categoriesIs this possible?

Can I Use Mysql Query In Jsp To Find Table?
we can use sql query to find attribute in jsp. If I want to find table?is it possible?

Join To Find Rows Not In Second Table
I'm trying to write a SELECT for MySQL 4.0 using a JOIN. I can get it to work in v4.1 using a subquery, but my ISP provides v4.0 only.

I've got 2 tables:
- group: Describes groups that exist, key is group_id
- usergroup: Members of groups - has user_id and group_id

I want to find which groups a user **doesn't** belong to (say user_id=3).

In MySQL 4.1+ I can do this using a subquery:

SELECT group_id FROM group
WHERE group_id NOT IN (
SELECT group_id
FROM group g,usergroup ug
WHERE ug.group_id = g.group_id
AND ug.user_id = 3
)

This query doesn't work in MySQL 4.0, no I need to use JOIN (I think). I've been searching forums and trying things out, but I cannot figure out how to make it work.

How Can I Find Out The Names Of The Indices Of A Table?
I can do CREATE INDEX ...e.x.:

CREATE INDEX foo ON some_table;
CREATE INDEX bar ON some_table;

Is there a SHOW commaand that will display the indicies of a table?

e.x.: SHOW INDICIES ON some_table;

Find If Field In A Table Exists Or Not
Is there a way to find out if a field in a table exists before trying to send data to it?
then if not exists create it.

How To Find Records That Are NOT Referenced In A Join Table?
Table structure...

CREATE TABLE category
(
id TINYINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(40) NOT NULL
);
INSERT INTO category (id, name) VALUES
(1, 'CSS'),
(2, 'HTML'),
(3, 'XML'),
(4, 'Javascript'),
(5, 'PERL');

CREATE TABLE category_j_article
(
category_id TINYINT UNSIGNED NOT NULL,
article_id INT UNSIGNED NOT NULL,
PRIMARY KEY (category_id, article_id)
);

CREATE TABLE article
(
id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(40) NOT NULL
);

Let's say I want to find all articles that aren't filed under multiple categories? For example, if I want to find articles that aren't filed under the CSS and HTML categories?

Error 1032 - Can't Find Record In Table
I have a problem with a very simple table when using partitioning in mysql 5.1.11 on SuSE Linux 10.0:

Table Information:

CREATE TABLE `adr-0` (
Adr varchar(255) COLLATE latin1_german1_ci NOT NULL DEFAULT '',
Qty int(10) NOT NULL,
PRIMARY KEY (Adr),
)
ENGINE=MyISAM DEFAULT CHARSET=latin1
COLLATE=latin1_german1_ci
PARTITION BY KEY (Adr) PARTITIONS 10 ;

now i'm entering data into the table:

insert into `adr-0` values ('TestAdr','1')
on duplicate key update Qty = Qty + 1;

this works fine until the "on duplicate key" triggers. When a duplicate key is found I get the error 1032 "can't find record in adr-0" instead of an increasing field qty.

I see no limitations in the partioning section of the mysql documentation which could cause this error. On a non-partitioned table it works fine under 5.1.11.

Is someone out there who knows if this is a bug or a feature?

Having MySQL Find Only Orders With Multiple Rows In Another Table
In PHP I could just do a querey of all ordernumbers and within the
WHILE do a querey of orderitems where the ordernum equals the original
querey, and then do what I need IF numrows > 1.

But surely there's a way to maybe do that in the mySQL querey? Some way
that might be more efficient than a querey of EVERY order?

If there's simply a name of some topic in mySQL that might apply, just
tell me to look that up. For example: "Take a look for 'distinct',

Locked Myself Out
I setup MYSQL about 3 monthes ago(one of the latest versions, but don't know the exact version) and have had no problems since. Today I was fooling around with getting PHPNuke setup, but I was having some problems. Anyway, I went in and started fooling around with PHPadmin and checked some box and now I can't log into MYSQL. I get an access denied error. I think the password is fine, it's the permissions that are screwed up. I followed the suggestions in this link:

http://dev.mysql.com/doc/mysql/en/resetting-permissions.html

but I'm hitting a wall. I shut down the service fine, but when I try to restart the service with C:mysqlinmysqld-nt --skip-grant-tables it comes back without any errors, but it never restarts the application. I cannot do anything more in the process because I can't get MYSQL to start. I can restart the service fine, but the command above will not start MLSQL with the special permissions.

Query Locked
I have an application which has queries of about 8 inner joins (takes around 0.3 second of execution) . This application is accessed from around 8 different points ( web and wap front end). Since it got so many hits the processes in mysql starts to lock and a lot of people can't access the page.

I am using PHP with mysql_connect() not persistent. We tried persistent but it gives the same result. I'm trying to research for Connection Pooling (like in java) but i haven't found the right resources.

I tried upgrading to mysql 4.20 and change the queries to sub queries but it seems that the execution is twice slower than with Inner JOin (I wonder why). I've also tried to seperate the burden to PHP but it's not such a good idea since it makes my application not scalable.

Please help me with this issue?

Locked Processes
When I execute the show processlist command I see locked( in state locked ) processes and if I kill one all the other get locked and the db freezes.

When I kill all of them the problem is solved. This problem has been re-occurring.
Can anyone tell me what and how to prevent it. Its a multithreaded mysql 3.23.41 server on linux. The table types in the DB are MyISAM.

Database Locked
all of a sudden i can't edit any table from 1 database from any editor

i guess it locked up or something

got an idea how can i remove this lock or what else could be causing this problem?

My Database Locked
I'm very new to mySQL. Right now I have a page that I have accessing mySQL and displaying a certain number of entries with the while function:

<?php

mysql_connect($hostname,$username, $password) OR DIE ("Unable to connect to database! Please try again later.");
mysql_select_db($dbname);

$query = "SELECT *
FROM `mos_content`
ORDER BY `id` DESC
LIMIT 0 , 5";
$result = mysql_query($query);

while($newArray = mysql_fetch_array($result)){
$title = $newArray["$title"];
$introtext = $newArray["$introtext"];
$fulltext = $newArray["$fulltext"];

echo $title . "<br>" . $introtext;
}

?>

However, in the webpage, the first entry comes up, and the rest don't display. I know the code works because I get 5 <br> tags total (as the limit).

Locked Out Of My Own Server
im using lampp with mysql. Anyway I was trying to give the root user a password because at the time it had no pass and it was making meta wiki mad.
20 minites later after messing with the my.cnf and doing alot of mysql -u root -p
somehow shape or form I locked myself out, and im not sure what the hell I did.
I went here ( http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html ) and tryed what they said but it dident work. I was wondering if you could just overwrite the pid file yourself with some fresh one. Anyway if someone could help that would be grait, I have root perms so that wont be a problem.

Tables Locked
I used mysql-3.23. I run "large" large query and they don't crashed.
When I run the same query on mysql 4.1 some tables are locked.

SELECT actor.first_name, actor.last_name,
A.dba, A.source, A.processor, A.partner, A.date_send, A.a_status, A.date_received A.notes,C.request, C.request2, C.request, C.month, C.submitted,
D.status, D.processor, D.approve, D.month, D.contract,
B.b, B.switch, B.var, B.download, B.follow_up
FROM actor, A, C, D, B
where actor.id = A.actor_id and C.a_id = A.id and
D.a_id = A.id and B.a_id = A.id;

All Processes Are Locked
I have a problem with my mysql server. After some time of stable working all allowed by max_user_connections mysql processes have locked state. But there is no working query making the locking! All queries are locked for infinity amount of time. "Service mysqld restart" does not help! So I have to "kill -9" mysql process

Subsys Locked
Shut down my Linux PC running MySqld and rebooted this morning and =
cannot get mysqld up. In services when I click on mysqld I get the =
message "Mysqld dead subsys locked" when i restart the server it says =
mysql succesfully restarted, but it isnt. When I try to stop the server =
it comes back with an error message "failed to shutdown". So I rebooted =
and during shutdown- shutdown mysql.............failed and- mysql =
killall...............failed.
Anyone have any ideas as to how I can sort this? would a reinstall of =
Mysql work? would I lose legacy data doing this?

Locked MySQL Processes
What does "locked" mean for the state of a MySQL process? My server has been rediculously slow the past day. I've been under 5% CPU for the past month, and all of the sudden today, with no significant changes in software or traffic, I'm at a constant 50% CPU. And one thing I notice that there are a ton of MySQL processes running, the majority of them "locked."

User Root Locked Out.
I have mysql 4.0.16 database running on a windows machine, it was
running fine. I didn't use it for a week and now when I try to go into
it and delete some records it tells me access denied for root, I can't
create users or modify anything. When I do a show grants it says all
grants for user root.

Process Getting Locked Occasionally
We are using MySQL 5.0.22 with PHP 5.1.4 on Apache 1.2.2. The OS is Red Hat EL 3.0 with cluster suit. The application is a call center management system. We are intermittantly getting the error 1203 (Too Many User Connection) while connecting to the database. If we restart the Apache then things become ok. Otherwise, the users are unable to connect to the database. While doing a show process at the time it happens we find that a number of processes are in locked state. But the MySQL server is running and we can connect it with phpMyADMIN. We are using MyISAM tables and we are using replication of the database as well.

The max_user_connection is set at 200. The hardware is having 2GB RAM and is running only MySQL. As we are not knowledgable enough, may be we are missing some information that we should have posted. Kindly let us know and we shall post all the required information.

All Activity On Database Locked
We are having a tough time tracking down a problem with my MySQL
database. The version is 3.23.58 running as the backend for Request Tracker (rt2)
by Best Practical.

Occasionally (once every 3-4 days) all running queries on the table
will be "locked". We use MySQL for a number of different purposes, and
I can normally nail the problem down to a specific slow query, but that
is not the case here. I cannot find any running queries at all. All
connections are either in "Sleep" or "Locked".

Has anyone else ever seen this? Is there a way I can determine which
query is locking the others? Based on the time field from "SHOW FULL
PROCESSLIST" I can tell which query has been locked the longest, and
attampts to kill it never succeed.

I am hesitant to upgrade to the 4.0 series until I have exhausted all
other possibilities. We have had difficulty in the past with migrating
internal apps to 4.0, so I am not sure I want to dig upgrade for an app
we aren't familiar with (rt2).

For completeness, you should know all tables are MyISAM and when I view
the processlist, I am logged in to MySQL as root.

All Activity On Database Locked
The version is 3.23.58 running as the backend for Request Tracker (rt2)
by Best Practical.

Occasionally (once every 3-4 days) all running queries on the table
will be "locked". We use MySQL for a number of different purposes, and
I can normally nail the problem down to a specific slow query, but that
is not the case here. I cannot find any running queries at all. All
connections are either in "Sleep" or "Locked".

Has anyone else ever seen this? Is there a way I can determine which
query is locking the others? Based on the time field from "SHOW FULL
PROCESSLIST" I can tell which query has been locked the longest, and
attampts to kill it never succeed.

I am hesitant to upgrade to the 4.0 series until I have exhausted all
other possibilities. We have had difficulty in the past with migrating
internal apps to 4.0, so I am not sure I want to dig upgrade for an app
we aren't familiar with (rt2).

Show The LOCKED Tables
Can I show the locked tables which any client might have locked on mysqld at any given time?

Password/Username Locked Me Out Of PhpMyAdmin
I'm using MySQL 5.X on a Mac. I was trying to create a password and username for a new database. I created the database, then clicked on Privileges. Next, I created a password and username.

Not only can I not access the database, I can't even access phpMyAdmin now; I get this error message:

Query/connection State Getting Locked
I am using MySql server 4.1.10a.
I am facing problem while firing big query
Like join with multiple tables multiple conditions

Whenever I fire this kind of query, all other requests from other connections got locked.

I am using MyISAM storage engine for storage. And database size near about 1.5 GB. It's a linux on IBM server duel xeon processor 2GB ram.

Random Query, How To Keep Sort Order Locked?
PHP Version 5.1.6 - mySQL 5.0.22

Let's pretend we have 100.000 rows in a table (all containing images with details), and I want to display 100 images at a single frontend page, but randomly retrieved and keeping the sort order once initiated to a user session.

With the normal RAND function, you have a chance to stumble on the same images when you navigate to the next page with again 100 items on. But even worse, going back to page 1, will return totally different results, and will freak out the viewer

How to get a (fake) random listing on a fairly large database, where every requested row is unique, and the sort order is being locked (until you press a randomize button ie, or start a new session) while keeping speed in mind (so trying to avoid reading out all rows up front).

Given Field Name, Find Table That Has Tha Field Name?
Is there a quick way to identify tables that have a specific column in them? For example, if I have a column name 'RuleName', how can I need to find all the tables in a database that have a column with that name?

Cannot Alias Locked Tables / Join To Unlocked Tables ?
If you manually issue a table lock then query that table, aliasing the table generates an error. If you try to join the table to another table that is not locked, you will receive an error. What is the reason for this?

Find Row
how do you use the function: mysql_tell_row

I just get the error: Call to undefined function: mysql_tell_row()

Find
I want to find a string with a dot, space and any lowercase letter and replace it with a space and any lowercase letter.

-- FIND
". any lowercase letter" ie [DOT][SPACE][ANY LOWERCASE LETTER]
-- REPLACE with
" any lowercase letter" ie remove [DOT]

How To Find Out If A Msql Table Is Locked From A Php Script

Is there any way with a php to find out if a table is locked before using a mysql_query on the table?