MYSQL :: Disk Size Of Tables[or Database] In Mysql Or Oracle

How Big ( Disk Size ) Would This Database Be: 4.2 Billion Rows
I have a database in MySQL version 5.0.19 that I'm making. Its structure is:

CREATE TABLE `big` (
`keyval` int(10) unsigned zerofill NOT NULL,
`name` varchar(20) default NULL,
`avail` enum('y','n') default NULL,
PRIMARY KEY (`keyval`),
KEY `keyval` (`keyval`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
The 'keyval' will be filled with every value from 00000000 to 4294967295 ( 4.3 billion rows ), and assume worse case of 20 characters in each 'name' element and 'y' or 'n' always set in the 'avail' colmn.

Ibdata1 Is Close To Disk Size
I am running MySQL 4.0.13 with my-medium.cnf (attached) on a Solaris 8, 4x450 Mhz, 4gb RAM. All my tables are InnoDB. Currently my ibdata1 is 1.8 gb. I have about 1 gig space left on the same partition. Also it is excruciatingly slow now. How do prevent the ibdata1 from filling up the disk partition ? How do I increase the speed on my MySQL?

[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
myisam_sort_buffer_size = 8M
query_cache_size = 16M
query_cache_limit = 8M

log-bin
server-id = 1

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /usr/local/mysql/var/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/var/
#innodb_log_arch_dir = /usr/local/mysql/var/
# 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

( I had to comment the innodb to stop crashing )

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

Copy Tables From Oracle To Mysql
I want to copy some table from oracle to mysql, oracle table is
having large amount of data, how to convert from oracle to mysql?

Plz let me know the solution

Database Transfer Between Oracle 8 Database And MySQL Database
Is it somebody out there who has made a migration from an Oracle server to an MySQL server??

The scenario is as simply:

I've got a Oracle 8 server with a database with content that I want to transfer to a MySQL database. No special data, constraints etc that MySQL not will handle.

My solution is to reverse engineer the database from ERStudio and then produce a SQL script that will insert the data into the MySQL engine.

But I can't do this, because the customer want me to do a PL/SQL script that does this, even if he never have worked with Oracle.. So the question is.. Do someone know a simplier way to do this or do I have to teach myself PL/SQL and make a script that produces a MySQL sql script ?

Regarding Database Link In MYSQL Compared To ORACLE
I am looking for some info related to Database Link in MYSQL similar to the one in ORACLE.

1.If I want to transfer data from one server to another server, how do i do it MYSQL

2.In case of a query needs access to other databases, how do i do it in a query.
ie (select a.col from table a, table1@dbserver b where a.col = b.col).

3.In Case of transferring the data to the other database server(like From MYSQL database to ORACLE Database), what method should be adopted. ie(insert into tab@dbserver select* from table1;)

Restore Database From Another Disk
I'm wanting to restore my old database by copying the contents of the old /var/lib/mysql folder to the new server, but this isn't working.

Is there a documented procedure for doing this? I'm using InnoDB and MyISAM.

Migrate Tables To A New Schema In Oracle
I am trying to migrate some tables that are in mysql database to oracle without deleting/altering the tables in mysql.

Release Disk Space By Drop Database ?
OS. linux 2.4.22
MYsql : 4.0.18-standard

I created a database and populate 2 big InnoDB tables, the total size
is > 3G. After all testing, I droped the database .

But, the harddisk space is not release to the filesystem, Why, How
could I recover that ?

Release Disk Space By Drop Database
OS. linux 2.4.22
MYsql : 4.0.18-standard

I created a database and populate 2 big InnoDB tables, the total size
is > 3G. After all testing, I droped the database .

But, the harddisk space is not release to the filesystem, Why, How
could I recover that.

How To Calculate Data Size In MySQL Tables
In PostgreSQL you can access meta-data about table names, etc. so you could write a program that will automatically scan through all the tables in a database.

How do you do this with MySQL?

Here's the scenerio: Want to scan through all the tables in a db, finding data that matches a specifc key value (ie. a specific user), and calculate what percentage of space (and total space) is being used by those matched (that user).

Oracle Database
I have a oracle Database that contain information about all kinds of dogs. I have a form where people can enter a name or location and all kinds of info pops up from the database in a form. What I need to do is convert this oracle database to Mysql and use PHP to create a web based database query system. Now How can I convert this oracle database over to MySQL? Is there a tool (web based) that will allow me to create theses forms, which will allow or update, delete, and more details functions?

Mysql Database Latent Size
We tried 2 techniques to mesure db size and both fails to return
realtime size.

a) under innodb, we ’show variables’, find the innodb_data_file_path
variable and parse the size (works only if not autoextend) and we
substract the ’InnoDB free: ??? kB’ from the Comment field of ’show
table status’.

b) for all monitored tables, we figure:

indexFree = indexLength/dataLength * dataFree

and we sum up:

dataLength-dataFree + indexLength-indexFree

In both case the size is fair, although not perfectly equal (method A
reports bigger size), but the growth is comparable.

The problem lies in the accuracy of that info. We do bulky deletes,
removing 10 to 40% of rows in many tables.

First bug, the size of the DB is not quickly following the ’delete’
statements (it may decay for 20-40 minutes after the statements
completed!!).

Second bug, the DB size is not changing for 1-2 hours even though we
inserts a lot.

(We are talking about a few 10 millions rows tables in a 40 gigs
InnoDB space, getting ~500 inserts/s, ~2000-5000 deletes/s)

How can one mesure the DB size more in real-time, and avoid/account
the latent period where growth seams abscent?

Mysql 4.x DATABASE Size Estimate
If i had a php forum that used mysql 4.x and I had 145forum posts with 500characters and a 450KB image in EACH and every post.

how many Megabytes would this take up in the MYSQL database Approximately?, because I know mysql database compresses the images and forum posts etc.I need to know this so I can decide what size HARD DRIVE to get for my server.

Disk Quota In MySQL
Is there a way to assign a limit on the size of a specific database? For example database A can take up no more than 500 MB.

One of my databases can potentially grow without any bounds and possibly stop other critical databases from operating. We are using MySQL 4.0.21 on Linux. We use innodb tables.

Size On Harddrive Of Certain Tables
I would like to know if there is a way to get the datasize on harddrive of certain rows in a table?

Moving Mysql To Another Hard Disk
I have a web based intranet application (php) that uses a mysql database. The server has just had a new drive added to it and am looking for a way to move the database from the current c drive to this new drive.I'm looking for a way to either:

move the entire database to the new drive (in which case do i have to do anything within the code - the database name is still the same and i'll presume another drive is still localhost can)

Can i just make Mysql save data into the new drive (and also move just the old data file to the new drive leaving everything else as it was).

Database Size
Is 25mb (database) enough to handle 1.2 million records in one single table with 7 columns. What is the right Size of the database in order to handler that much records/rows?

Size Of Database
I want to know the size of my vowkrs database.

I am trying to run the command

function getDbSize(vworks){
$size=shell_exec("du -b /var/lib/mysql/vworks");
$size=explode(' ',$size);
return $size[0];
}

but am unsure if it is correct and where to run it from?

Max Size Of A Database?
What is the maximum size of a single database file in mysql? What is the maximum number of record can i have in a single database? what is max number of field can i have in a single record. Which is the best version of mysql 4 or 5?

Database Size
There is a general board-listing table. All boards in the forum are stored in there. For every board created, a MySQL-table is created and it's name stored in the general board table.

The table that is created along with the board, contains the data for the topics, as well as a reference to the appropriate topic table.

. The topic table contains the posts of the topic.

This all means that there will be a seperate mysql table for every board and for every topic.

Now this means that there will be a lot of tables because there will be a lot of postings and topics.

Therefore my question is: is it a problem, or sort of slowing MySQL down if there is a lot of tables in a database?

Database Size
I have tried deleting hundreds of records from several tables in my MySQL database and I have found that although the number of records in these tables has decreased, the size in Mb has remained the same.

I checked the data directory and the .MYI files seem to have been amended but the .MYD files have remained the same size.

Is the data still there? I really want to remove it both for security and to keep file sizes down.

Database Size
I have now got a large database that is getting to a size of about 4Mb when downloaded (dumped / uncompressed).On my Web server everything seems fine. But when using said database on my home server (localhost) I am recieving Max Execution time of 30 second errors constantly.How can I stop this from happening and is it likely to start happening on my web server soon?

Database Size
I have a database with a millions of records.
The main table has 2 varchars (200), 7 Integers and a date field.
Queries are done on 1 of the varchar fields.
How do I speed up queries?
Indexing the varchar fields?
Are there any performance tuning tutorials?

Oracle DDL To MySQL DDL
I'm having a Oracle-DDL and I want to import it to MySQL. How can I do this?

Mysql Vs Oracle
I am looking for some informations about the differences between MySQL and Oracle.

ORACLE DB To MYSQL
I'm after a bit of assistance. Has anyone migrated an oracle DB to mysql? the task in hand is to migrate over a terabyte of partitioned data so that it can be stored and accessed (probably rarely) for upto a year. Is mysql a feasible option for this? Can the migration toolkit handle partitioned data?

MySQL Or Oracle
Out of interest, is Ebay powered by MySQL or Oracle?

Database Size With SQL Command Only
I would like to know the database size. I know that we can use "show table status" but I don't know how can i use it in SQL language with the command prompt with Mysql.exe.

How To Know The Size Of The Database Used Using Phpmyadmin And MS-DOS??
how to know the size of the Database used using phpmyadmin and MS-DOS?

Database File Size
I running MySQL locally and have the following dir setup

C:wampmysqldatamike - This is where the tables for the database
mike are stored

C:wampmysqldata - This is where I think the database data is stored.

Basically the file in the data dir. (ibdata1) is 10,240kb in size.
When I update a table in the mike database the file size of ibdata1
doesn't increase and I don't know why?

Estimate Database Size
I want to estimate approximately the total size of a database but I don't know how can I calculate the size of an index or a primary key, because I don't know their size. For example, if I had this table:

CREATE TABLE example (
id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
idother INTEGER NOT NULL DEFAULT 0,
name VARCHAR(128) NOT NULL,
PRIMARY KEY(id),
INDEX relation(id,name)
) TYPE=InnoDB;

I suppose that the total size of this table would be:
SIZE= 2* (integer size) + 128 * (varchar size) + (primary key size) + (index size)
= 8 bytes + 128 bytes + ???

Migrate Oracle To MySql
I am looking for the best solution for migrating Oracle DB to MySql DB that are both on UNIX Sun Solaris 9 boxes.

I started out with Oracle Migration Workbench, MySql Query Browser, Administration kit, Oracle client and an intermediate PC.

Haven't had any luck. I am getting plugin errors even though I can ping the source machine and put the plugins in the plugins directory.

Has anyone done this before. And if so, where did get the info from or how did you do it?

Converting A Oracle Sql To Mysql
This is working on oracle but not on mysql.

update phpmod_listings b set b.image = 1 where exists ( select a.listing_id from phpmod_listings_images a where a.id=b.id);

Oracle To MySql Conversion
Has anybody out there 'successfully' converted from Oracle to MySql ?

Differences Between MySQL And MS SQL / Oracle PL/SQL
I have the chance to pick up some side work on a small MySQL assignment at night and over some weekends.

I would love the chance to add MYSQL to my toolbox, but until this point I have never used the product. I have 10 year experience with SQl and PL/SQL, are there many differences between the different platforms, or should I be OK with just floating over to MYSQL and "Going for it!".

Oracle To MySql Conversion
Has anybody out there 'successfully' converted from Oracle to MySql ?

MySQL Compare To ORACLE
I'm new in MySQL, how good is MySQL compare to ORACLE and Ms. SQL Server ?
How many data can be accept by MySQL?
How about the data size?
can it be use for enterprise level?

Limit The Size Of A Users Database
How do you limit the size of a database?

If I wish to limit the size of a users database so it can't go past 30mb so he/she as to request a increase in size . How do I acheive this??

Trimming InnoDB Database Size
I'm using InnoDB with Mysql and I've used delete to delete over 10
million records, but the InnoDB database is still the same size on the
disk (over 100 gigs) is there a way to get Mysql/InnoDB to shrink or
trim this size?

and also, can I set a maximum size and make it so itll rotate itself,
as in purge out old entries as new ones come in when it hits the
maximum?

Database Total Size In Bytes
I am using PHP/MySQL and I am wondering what type of query would I have to do to get the total size of the database in bytes... So this would include all the content. The reason is because I am trying to limit users to uploading files if they are over their max allowance.so I need to run a check.

Finding Table And Database Size
A couple questions about finding the disk space used by a =
table/database:

1) First how can I get the size a table is taking up on disk?
Is it the 'Data_length' field in: SHOW TABLE STATUS FROM db_name LIKE =
'wild';??
If so how can I do a query like the one above and just get Data_length =
returned?
Otherwise what query can I do to find the disk size of a table?
2) Is there a simple query to get the disk size of a database and all of =
it's tables? Or do I need to do the method I use in question one on each =
table in the db and add them up?

Does MySql Support Oracle-like Ref Cursors?
Does anybody know if MySQL supports the ability for a stored procedure to return a "ref cursor" (Oracle term)?

Here is an example of an Oracle procedure that returns a ref cursor:

PROCEDURE my_proc
(a_out_cursor OUT ref cursor)
IS
BEGIN
open a_out_cursor for
select col_a, col_b
from my_table;
END;

I am using Java, so I would call this procedure as follows:

CallableStatement statement = null;
Connection connection = getConnection(); //returns a java.sql.Connection

//Use factory to get statement
statement = CallableStatementFactory.getCallableStatement(connection, "call my_proc(?)");

statement.registerOutParameter(1, OracleTypes.CURSOR);

// Execute the procedure
statement.execute();

I would like to perform this same sort of fetching using MySQL instead of Oracle. Does anybody know if it is possible? Or must all CallableStatements be setup as queries and not stored procedures?

Need Some Guidance About Moving From Oracle To Mysql
I currently work with Oracle 9i databases and a couple of Oracle Developer versions. Ive been wanting to learn more about mysql as a replacement for an Oracle database in some applications. The question is, what is the preferred development tool to use for the user interface to replace Oracle forms and reports?

Export From Oracle 8.1.7,9i Or MS SQL Server To MySQL
I have created a rather large (60 table database) website dealio in PHP that
works with MS SQL Server, Oracle and presumably any other data base I add to
the wrapper functions that I created. All the development was done in
Oracle, but now its time to create that large datastructure again in
MySQL -- now I've built this all in notepad for Oracle (twice) and built it
in SQL Server using the SQL Server import tools (pretty nice) -- is there
anything that I can do that is comparible in SQL Server or can anybody
recommend a GUI tool that I can make the tables with -- I'm soooo sick of
Create table statements --

Ideally this process/tool would also bring the data with -- but either way
its good!

Mysql Setup Compared To Oracle
I'm new to mysql. Coming from the oracle database a couple of questions
came up. Perhaps somebody, who has also experience in oracle, can set me
on the tracks.

Questions:

1. is mysql simular organized as oracle: instance/users/tables,
so that I have to connect to chossen instance and user?
2. does mysql also use the term tablespace and can it administrated in the
same way?
3. when creating a mysql database, how to determine where the datafiles
are located?
4. is there something like a init.ora?
5. is it possible to start several databases from the same installation?
6. is there something like ORACLE_HOME and ORACLE_SID?

Hope you can give me details prepared for a newbie and point me to the
suitable commands or docs.

Does MySQL Support Oracle-like Ref Cursors??
Does anybody know if MySQL supports the ability for a stored procedure to return a "ref cursor" (Oracle term)?

Here is an example of an Oracle procedure that returns a ref cursor:

PROCEDURE my_proc
(a_out_cursor OUT ref cursor)
IS
BEGIN
open a_out_cursor for
select col_a, col_b
from my_table;
END;

I am using Java, so I would call this procedure as follows:

CallableStatement statement = null;
Connection connection = getConnection(); //returns a java.sql.Connection

//Use factory to get statement
statement = CallableStatementFactory.getCallableStatement(connection, "call my_proc(?)");

statement.registerOutParameter(1, OracleTypes.CURSOR);

// Execute the procedure
statement.execute();

I would like to perform this same sort of fetching using MySQL instead of Oracle. Does anybody know if it is possible? Or must all CallableStatements be setup as queries and not stored procedures?

Disk Size Of Tables[or Database] In Mysql Or Oracle

how can i know disk memory occupied by database[tables] in mysql or oracle.