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Enabling InnoDB


Actually am using mysql 5.0 version, default it using MyISAM engine, but i wnat ot use InnoDB engine. I tried to change the my.cnf file with entry "default_server_engnie=InnoDB".but there is no use.




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Error

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Foreign Keys Without Using InnoDB? (Server Disabled InnoDB - Any Way To Link Tables?)
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----log file---

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3.23.x To 4.0.x INNODB
Can I take multiple 2GB files in /var/lib/innodb and the corresponding
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64-Bit And INNODB
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Specifying INNODB
Is it a bug or a feature that with the conditions

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Now, if you specify table type as TYPE=bullshit,
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No InnoDB
OS Fedora Core 3
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Where Is InnoDB?
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Help On Innodb
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Mysql InnoDB PHP
i have a strange problem :
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Mysql InnoDB PHP
i have a strange problem :
MySQL 4.0.21 innodb and php 4.3.9-1
all tables are in innodb type.

For a simple select statement sometimes i get result and sometimes
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behaviour.
If my table is MyISAM type no problem.

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Innodb Vs MyISAM?
Besides transaction capability, is there anything else about innodb
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I really don’t need transactions, but for example, I need superior
reliability for index (too many index corruptions in the past). Is
innodb better in that area, or any other areas?

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Innodb Performance (CPU, RAM)?
I have a table with approx. 150,000,000 ++ rows. It should be approx 80 byte for each row. Now I'm planning to use it with mysql/innodb.

Can you guys suggest anything about this.

I have many questions... Can Innodb work well with such tables?

Will queries (select/update) be slow?

What hardware do you suggest, cpu/ram?

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InnoDB + AUTO_INCREMENT
Reading the MySQL manual regarding InnoDB databases, can someone confirm
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MyISAM Or InnoDB
I've read articles and postings about MyISAM vs InnoDB but I am still a
bit unsure about which storage engine to use for my new project.

I am developing a website in PHP/MySQL, which includes features such as
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their records, report generation based on database entries, shopping
cart but payments will be made through Paypal gateway and the search
facility.

This is a medium level website. What storage engine is best suited for
this site and why? I prefer InnoDB because of foreign key support. I'd
also like to know why MyISAM is not made to support foreign keys? If
you guys recommend MyISAM for me, how should I implement foreign key
support? Do I have to explicitely make provisions for foreign key
support in MyISAM using PHP?

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Innodb Logfiles
Is it possible to manually delete the logfiles created in innodb tables
and then do a 'touch logfilename' to recreate it?

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Mysqlhotcopy On InnoDB
Does mysqlhotcopy work with innoDB? I only get it to work with MyISAM
tables... For innoDB only the structure is saved but not the data =20

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Fulltext For InnoDB?
I was wondering, does anyone know if there are any plans to add FULLTEXT indexes to the almighty InnoDB such that it catches up with the funky MyISAM in terms of things you can pass to ALTER TABLE?

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Specifying INNODB Without Configuration
Is it a bug or a feature that with the conditions

1. INNODB is not configured in my.cnf
2. Table type is specified as INNODB

When you create the table there is no warning, and no syntax error, and the table type silently
and Microsoft-like, defaults to MyISAM?Now, if you specify table type as TYPE=bullshit, you get a nice (and expected) syntax error.

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Composed Of INNODB
My database is composed of INNODB tables such as


CREATE TABLEuser
(
nameVARCHAR(255)NOT NULL

) TYPE = INNODB;


The NOT NULL qualifier doesn't work as I would expect. While it
doesn't allow me to do this:

insert user values (null);

It will let me do this:

insert user values ("");

I appreciate that one could argue that "" is different to NULL and
therefore there is nothing wrong with this behaviour. However, surely
there is no defending the following (which is also allowed):

update user set name=NULL;

Is there any way that I can prevent users from setting a field to NULL
or ""?

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Innodb Doc In Mysql.com
In mysql.com site on section 7.5.4.1 it says and I qoute

"If something goes wrong in an InnoDB database creation, you should delete all files created by InnoDB. This means all datafiles, all log files, the small archived log file, and in the case you already did create some InnoDB tables, delete also the corresponding `.frm' files for these tables from the MySQL database directories. Then you can try the InnoDB database creation again. "
If I do this, will it break my database ?

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InnoDB Can't Use System's RAM As Specified
I am coming across an annoying problem with a new InnoDB installation.
On a 4Gig RAM box, Mysql doesn't seem to want to grab the RAM I am
telling it to take.

I would like for it to try and use around 3 Gigs for its
innodb_buffer_pool_size, but it refuses to startup with anything greater
than 512M. I bugged RedHat about it, and they had me change the shared
memory allowance to 3Gigs, but nothing changed. I'd really like to get
the pool size up so that the server doesn't have to go to disk so often.
I will admit to being an InnoDB newbie, I am reading everything I can
find though and have used the example my.cnf files to tweak it pretty
decently. This memory issue is all that is really bugging me at the
moment. Code:

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Key_buffer_size And Innodb
I only use InndoDB table type.
In this case, is it necessary (or useful) to set a big value to
buffer_key_size ?

I think it's better to allocate RAM to innodb_buffer_pool_size rather
than buffer_key_size

I'am wrong ?

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Asking MySQL If InnoDB Is Available
Is it possible to 'ask' MySQL using SQL if InnoDB is available and
usable?

I am writing a GUI database app that has a 'create table' function, I
want to give the user the option of creating an InnoDB database, but
only if InnoDB is available, can this information be found out from
SQL (I'm using JDBC)

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Replication And InnoDB
I'd like to setup the following:

Server A <-- Server B <-- Server C
Data A some of Data A some of Data A
Data B Data B

Server A should be the master for server B. Server B should get not
all but some of the data of server A. Additionally there should be
other data stored on server B. Server B is slave for server A and
master for server C. Server C simply should get all the data of server
B.

No problem with MyISAM, but with InnoDB some questions arise:

The manual says, that one should shut down the master and copy the
InnoDB datafiles, logs and .frm files.

1.) If I only need some data of server A on server B wouldn't it be
overkill to copy all the InnoDB data?

2.) If I want to store other data on server B I can't mix up the
InnoDB datafiles and logs for data A and B, can I?

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InnoDB Autodeletion
I have a simple, but very general problem with MySQL using InnoDB tables.
I am sure you experienced folks can give me a solution...

Using foreign keys I want to delete a row in the table T_Child with WHERE
T_Child.Parent_ID=x
when ALL ROWS in the Parent table with ID=x are deleted.(This behaviour is very useful
when Parent table is a list where T_Parent.ID is the ID column of the list
and hence, x can occur multiple times
in this column.)As it is now, as soon as ONE row with ID=x in the Parent table is deleted,all rows in the Child table
WHERE Parent_ID=x are also deleted.

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MyIsam DB To InnoDB...
How do I convert my existing database, which I'm using MySQL ver 4 for Windows and MyISAM table type to store the data, to the new format – InnoDB, without problem (
losing data...)

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Backup InnoDB
I just installed MySQL and I need to make a backup of my InnoDB tables
but I don't want to purchase the tool to do it. Does anyone have a
detailed list of how to do this.

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InnoDB Type
I'm using mySQL 4.0.20, interfacing it with phpMyAdmin 2.5.6.
I usually set tables up with a "default" type, which I believe is
myISAM (or whatever that one is.) But I decided to go with InnoDB for
the stability and accuracy.
Noticed something on tables in that format I've never noticed in the
other format:

tbl_product 1 InnoDB - Master Product Table; InnoDB free:
4096 kB
tbl_users 1 InnoDB - User Management Table; InnoDB free:
4096 kB

What's the meaning of "free: 4096 kB"? It sounds as though InnoDB sets
up some 4MB maximum size for the table. Is that so?

If so, is there a way to change it? I anticipate a couple of my tables
are going to end up eventually being VERY large.

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MyISAM And InnoDB
I was reading that the main difference between both is that InnoDB supporta transactions ?? What is that ?
Can anybody explains me this feature ?
For the moment I have been using MyISAM, but in the future, if it's neccesary, Can I change to InnoDB easily ?
Will the queries to access to data need to change ?

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INNODB -->MyISAM
CREATE TABLE assembly_process (
ASBPR_CODE int(5) NOT NULL auto_increment,
ASBPR_PD varchar(5) default NULL,
ASBPR_ORG_PD varchar(5) NOT NULL default '',
ASBPR_ORG_QTTY int(5) NOT NULL default '0',
PRIMARY KEY (ASBPR_CODE)
) TYPE=INNODB;

I am using phpmyadmin. i would like to create a table with type INNODB but it automatically become MyISAM type although i specified the table type=INNODB.

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Innodb Issues
I've inherited a database server that is bad shape. The database is very slow to spite having ample hardware. Symptoms:

1. From the mysql user agent the tables (innodb) work as normal although, slowely.

2. Looking at the file system, the files that store the table data are not being updated. Instead a very large files called ibdata1 is being updated regularly.

We think that the innodb engine in this version of mysql (4.0.18) is in some kind of unstable situation. What do you think? What do you recommend we do to fix this?

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InnoDB Vs MyISAM
I am building a restaurant database. and will ahve foriegn to refer other table. I may have around 2000-5000 entries of restaurants and other places.



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Which One To Use :: MyISAM Or InnoDB
I am developing an enterprize application. There are a lot of tables with a lot of records in them. The application is supposed to be used by a lot of people(that's why I need it to work fast). I know that MyISAM is faster than InnoDB but on the other hand I have to consider the row level locking that InnoDB offers. On the other hand the size InnoDB is twice bigger than MyISAM. I do not know which one to choose.

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MyISAM VS Innodb
I'm needing to use an engine that supports both FULLTEXT searches, as well as foreign keys. MyISAM supports fulltext, but not the keys, innodb is the reverse.

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MySQL 3.23 And InnoDB
I believe these are pretty basic questions, but allow me to ask:
q1. MySQL 3.23 supports InnoDB. Is this correct?
q1.2. If so, how well does MySQL 3.23 support InnoDB?
q2. Does not-handling InnoDB tables properly in MySQL 3.23 create some problem?
q2.2. If so, can the problem become as severe as it locks up the database?

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Innodb Locking
I have started using innodb for an application I want to build.
The application inserts customers, along with other data in the database.
My question:
Is there a way to lock a particicular record so that only one person can access it.
I mean, when an employee of my company opens a record either to see it or update it, how can I be sure that at the same time another employee does not edit or even delete the same record.
I tried select .. lock in share mode and select .. for update but they did not do what I expected, I could still access the same entry from multiple clients.

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About InnoDB Deadlock
I just changed a few of my tables from myisam to innodb in order to implement transactions. Shortly after making the shift and begining the testing process, I saw a few failed queries due to deadlock.

Prior to moving towards InnoDB, I wasn't aware of the issue with deadlocks and am working towards a solution to handle them. I'm using a database wrapper written in PHP and am working on implementing the solution here.

The part of my application that is using transactions pertains to an accounting system. Let's assume that I've got 150 INSERT statements that make up the current transaction. The transaction must be completed in its entirety in order for the accounting transaction to be accounted for correctly.

Let's say that one of the queries, half way through the transaction set fails due to a deadlock. Does mysql automatically rollback the entire transaction up until the failed query?

If that is the case, is there any way to prevent that from happening? Within my database class, I'm catching the error, and if the errno pertains to a deadlock, I'm reissuing the query that failed within a while loop until it either succeeds or reaches max atmysqlts, which I have set to 100.

Provided mysql does not rollback the entire transaction set, I would think my solution would work. However if the entire transaction set is rolled back then I need to be prepared to reissue all queries in the transaction set.

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InnoDB Row Formats
When creating a table, I have the following row formats to choose from:

- Fixed
- Dynamic
- Compressed
- Redundant
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What do they mean? What do each of them do? How does the selection of one over the other affect data?

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InnoDB Corruption
My MySQL crashed this morning which lead me to look into my server to see what was up. Upon inspection it seems I may have made a mistake.

Back on June 25th 2006 I upgraded MySQL from 4.1.12 to 4.1.20 and I copied over the data folder (or so I thought) and got it up and running and happy. However when I looked today it seems that I may have not copied over the log files! The following error shows up in the error log:

060808 10:48:44 InnoDB: Error: page 531 log sequence number 0 266909086
InnoDB: is in the future! Current system log sequence number 0 62488108.
InnoDB: Your database may be corrupt.
060808 10:48:44 InnoDB: Error: page 532 log sequence number 0 266926873
InnoDB: is in the future! Current system log sequence number 0 62488108.
InnoDB: Your database may be corrupt.

a bunch of them!

I have a feeling that it is because I failed to drop in the log files after the upgrade.

What is the easiest way to remedy this situation? I do have the old log file. Is there anyway to append the two logs togehter?

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