Hi!
sangprabv wrote:
> Hi,
> Is that true that MySQL lock table on each query? Does it means will
> cause slow speed? Then how to avoid table lock and speed up MySQL? TIA.
You need to read up about the different table handlers available.
They have different properties, including the locking beh
Eli Shemer wrote:
>
>
> The web site on the other end reads all the data from the table and
> generates standard html/css code with the information from the table.
> How can I make all of the apache child processes wait for the external
> script to complete its operation once it has started?
Good Morning Eli
I would consider implementation of mpm_common more specifically enabling
inter process communication with mutex's such as what you see at
http://httpd.apache.org/docs/2.0/mod/mpm_common.html#acceptmutex
and then utilising the flock directive to either lock/unlock a file such
such
Sent: Monday, January 02, 2006 9:31 PM
Subject: Re: Table Lock issue on insert
Hi John,
I have looked around a bit and you might be interested in this part:
InnoDB: Do not intentionally crash mysqld if the buffer pool is
exhausted by the lock table; return error 1206 instead ...
Message-
From: Danny Stolle [mailto:[EMAIL PROTECTED]
Sent: Saturday, December 31, 2005 2:59 AM
To: Brittingham, John; mysql@lists.mysql.com
Subject: Re: Table Lock issue on insert
Hi John,
What kind of engine are you using on your table? MyIsam or InnoDB or are
you using merged tables?
If you
tolle [mailto:[EMAIL PROTECTED]
Sent: Saturday, December 31, 2005 2:59 AM
To: Brittingham, John; mysql@lists.mysql.com
Subject: Re: Table Lock issue on insert
Hi John,
What kind of engine are you using on your table? MyIsam or InnoDB or are
you using merged tables?
If you query your system vari
Hi John,
What kind of engine are you using on your table? MyIsam or InnoDB or are
you using merged tables?
If you query your system variables what is your max_write_lock_count?
If you create a copy of the table: mysql>create table cp1 like
USERS_PER_HOUR; and you try the insert again; is the
Every new connection is considered a client. It's a bad idea to try to
do your own scheduling client side to try to defeat table locks
because MySQL can proceed with other clients as soon as the locks are
freed vs your application waiting for a complete result set to return
before proceeding with a
FWIW, I'm still having this problem.
I've completely dropped the table and re-built it from the ground up.
It's a bizarre problem... The table is totally simple. A primary key,
and then three varchar fields. The FULLTEXT index spans the 3 varchar
fields. There are only 6500+ rows, so it's p
On Fri, Jan 09, 2004 at 01:43:53PM -0800, trevor%tribenetwork.com wrote:
> Mysqlians,
> I am trying to determine in some of my database tables should be
> converted from MyISAM to Innodb. I have read that a collusion on 10-20% is
> the threshold at which one should convert( current # a
On Wed, Apr 24, 2002 at 12:45:43PM +0300, Michael Widenius wrote:
>
> I will add to our TODO to add to SHOW OPEN TABLES a list of threads
> that has locks on the table (or maybe a SHOW LOCKS command) to
> better cover this case in the future.
Could it be SHOW TABLE LOCKS? That way it is not con
Hi!
> "Lopez" == Lopez David > writes:
Lopez> If no row is returned, then the following happens:
Lopez> 1) lock table ...
Lopez> 2) select ...
Lopez> 3) if no row is returned,
Lopez> 4)insert ...
Lopez> 5)use LAST_INSERT_ID() to get the value of the key
Lopez> 6) else
Lopez David E-r9374c writes:
> Monty
>
> BTW, it's a thrill to hear from the CTO.
>
> The procedure for locking a table is more complex but will
> attempt to describe it further for you. Any of the 150 daemons
> can insert to the hash tables. The data in the row can be used
> by all 150 daemons.
Monty
BTW, it's a thrill to hear from the CTO.
The procedure for locking a table is more complex but will
attempt to describe it further for you. Any of the 150 daemons
can insert to the hash tables. The data in the row can be used
by all 150 daemons. The primary key in hash table is the
"id" f
On Mon, Jan 28, 2002 at 12:00:43PM -0500, bin cai wrote:
> Hi,
>
> I have one concern about multithread. I am building online exam
> system. many students can get access to one table in one
> time. Should i use table lock every time when one student get access
> to the table. As i know, mysql is
Vasoczki,
Monday, January 28, 2002, 12:20:21 PM, you wrote:
VF> Yes, i need this too but for a whole database. i just thought, if there is a
VF> power loss, and the database is get stuck, the users won't able to connect
VF> again ...
It should be a very fanciful power failure and hardware failu
Try this:
If you are using a table handler in MySQL that doesn't support transactions,
you must use LOCK TABLES if you want to ensure that no other thread comes
between a SELECT and an UPDATE. The example shown below requires LOCK TABLES
in order to execute safely:
mysql> LOCK TABLES trans READ,
Yes, i need this too but for a whole database. i just thought, if there is a
power loss, and the database is get stuck, the users won't able to connect
again ...
Vaso
-Original Message-
From: Hayan Al Mamoun [mailto:[EMAIL PROTECTED]]
Sent: 2002. janu?r 28. 9:48
To: MYSQL MAILING LIST (E
Hi Hayan,
have a look at:
http://www.mysql.com/doc/L/O/LOCK_TABLES.html
for information on (un)locking tables.
At 11:48 28.01.02 +0300, you wrote:
>Hi, Is there a way to lock a table so that only one user can change it and
>then unlockit?
>I need to do this coz I want visitors to retrieve so
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