Re: MySql and AOP?

2005-10-12 Thread Alvaro Avello
probablemente por que mark es el manager del desarrollo de software de 
conectividad para Mysql...entre ellos jdbc.. :-)


Saludos,
Alvaro Avello.

Fernando Asteasuain wrote:


Thanks por answering Mark!

By the way, how do you know that JDBC driver uses AspectJ?
I´ve vissited several jdbc web sites and i didn´t find this information.



Quoting Mark Matthews [EMAIL PROTECTED]:

 


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Hash: SHA1

Fernando Asteasuain wrote:
   


Hi:

I was visiting the Aspect Oriented Software Development (AOSD) -Europe 
Workshop 2005 website,
(http://www.aosd-europe.net/workshop-web/discussions.html) especially the 
discusion area. There, I read the following:


What is the state of application of AOSD especially in industry?
The exact extent of where AOSD tools and techniques are used is difficult
 

to 
   

evaluate, in particular, because of its hidden nature as an enabling 
technology in applications. There are not many open-source projects that 
clearly feature AOSD techniques, notable exceptions being MySQL and AJ 
Hotdraw. Furthermore, eight commercial IBM products currently include AOSD
 


libraries. 

Is MySql  implemented using AOSD technology? How they are related? I wasn´t
 


aware of this.

Thanks, Fernando.
 


Fernando,

The JDBC driver uses Aspect/J to weave in tracing aspects, if that's
what they're referring to. I'm not sure the server uses any technology
that could be considered aspects.

-Mark


- --
Mark Matthews
MySQL AB, Software Development Manager - Connectivity
www.mysql.com
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RE: MySQL 4.0.2 is topping out at 1024 threads!

2004-11-17 Thread Alvaro Avello
 master for this slave - required
 #master-host =   hostname
 #
 # The username the slave will use for authentication when connecting
 # to the master - required
 #master-user =   username
 #
 # The password the slave will authenticate with when connecting to
 # the master - required
 #master-password =   password
 #
 # The port the master is listening on.
 # optional - defaults to 3306
 #master-port =  port
 #
 # binary logging - not required for slaves, but recommended
 #log-bin
 
 # Point the following paths to different dedicated disks
 #tmpdir = /tmp/
 #log-update = /path-to-dedicated-directory/hostname
 
 # Uncomment the following if you are using BDB tables
 #bdb_cache_size = 384M
 #bdb_max_lock = 10
 
 # Uncomment the following if you are using InnoDB tables
 #innodb_data_home_dir = /var/lib/mysql/
 #innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
 #innodb_log_group_home_dir = /var/lib/mysql/
 #innodb_log_arch_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 = 384M
 #innodb_additional_mem_pool_size = 20M
 # Set .._log_file_size to 25 % of buffer pool size
 #innodb_log_file_size = 100M
 #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
 
 [isamchk]
 key_buffer = 256M
 sort_buffer_size = 256M
 read_buffer = 2M
 write_buffer = 2M
 
 [myisamchk]
 key_buffer = 256M
 sort_buffer_size = 256M
 read_buffer = 2M
 write_buffer = 2M
 
 [mysqlhotcopy]
 interactive-timeout
 
 
 
 
 Thanks All!
 
 
 
 
 Matt Babineau
 Web Developer
 Criticalcode - http://www.criticalcode.com
 
 -Original Message-
 From: Dan Nelson [mailto:[EMAIL PROTECTED] 
 Sent: Wednesday, November 17, 2004 8:26 AM
 To: Gleb Paharenko
 Cc: [EMAIL PROTECTED]
 Subject: Re: MySQL 4.0.2 is topping out at 1024 threads!
 
 In the last episode (Nov 17), Gleb Paharenko said:
   Help! I can't figure out a way to stop my server from topping out
 at 
   1024 threads. This is a very strange behavoir. I have tons of
 legit 
   use on my database server but I don't think the threads are dying 
   does anyone have any suggestions for this?
  
  Similar problems are often found in lists. Usually they are solved
 by 
  increasing file limits. You likely need to increase
 open-files-limit.
 
 If you're running Linux, you may need to recompile your linuxthreads
 library
 also:
 
 http://dev.mysql.com/doc/mysql/en/Source_notes-Linux.html
 
 -- 
 Dan Nelson
 [EMAIL PROTECTED]
 
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Alvaro Avello [EMAIL PROTECTED]
Servinco S.A.


replication log error

2004-11-05 Thread Alvaro Avello
Hi. 
I'm having a problem with a slave replication server. the 'show slave
status'  command shows :

mysql show slave status;
+-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
| Master_Host | Master_User | Master_Port | Connect_retry |
Master_Log_File | Read_Master_Log_Pos | Relay_Log_File   |
Relay_Log_Pos | Relay_Master_Log_File | Slave_IO_Running |
Slave_SQL_Running | Replicate_do_db | Replicate_ignore_db | Last_errno |
Last_error | Skip_counter | Exec_master_log_pos |
Relay_log_space |
+-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
| hubble  | replica | 3306| 60|
hubble-bin.009  | 646906124   | gemini-relay-bin.008 |
1006270724| hubble-bin.009  | No   | No
| | | 0  | error 'unexpected
success or fatal error' on query 'INSERT INTO COBGE7A' | 0
| 646905758   | 1006271180  |
+-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
1 row in set (0.00 sec)
 
the query shows a table that don't exists ( COBGE7A ) , so what I
thought is that the relay log was corrupt. I'm trying to read the log
with mysqlbinlog  : 

 mysqlbinlog -f gemini-relay-bin.008  nuevo.sql 

and got :

ERROR: Error in Log_event::read_log_event(): 'Event too small',
data_len=0,event_type=0
ERROR: Could not read entry at offset 909811060 : Error in log format or
read error


 Could i skip the lines before the infamous offset number or  something
else...? 

Thanks in advance and have a good weekend.
-- 
Alvaro Avello [EMAIL PROTECTED]
Servinco S.A.


RE: replication log error

2004-11-05 Thread Alvaro Avello


 mysql show slave status\G;
 *** 1. row ***
   Master_Host: hubble
   Master_User: replica
   Master_Port: 3306
 Connect_retry: 60
   Master_Log_File: hubble-bin.009
   Read_Master_Log_Pos: 646906124
Relay_Log_File: gemini-relay-bin.008
 Relay_Log_Pos: 1006270724
 Relay_Master_Log_File: hubble-bin.009
  Slave_IO_Running: No
 Slave_SQL_Running: No
   Replicate_do_db:
   Replicate_ignore_db:
Last_errno: 0
Last_error: error 'unexpected success or fatal error' on query 'INSERT 
 INTO COBGE7A'
  Skip_counter: 0
   Exec_master_log_pos: 646905758
   Relay_log_space: 1006271180
 1 row in set (0.01 sec)
   



On Fri, 2004-11-05 at 14:37 -0800, Max Michaels wrote:

 Please run the command as 'show slave status\G' and send those results. Makes it 
 much, much easier to read :)
 
 
 -Original Message-
 From: Alvaro Avello [mailto:[EMAIL PROTECTED] 
 Sent: Friday, November 05, 2004 3:36 PM
 To: [EMAIL PROTECTED]
 Subject: replication log error
 
 Hi. 
 I'm having a problem with a slave replication server. the 'show slave
 status'  command shows :
 
 mysql show slave status;
 +-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
 | Master_Host | Master_User | Master_Port | Connect_retry |
 Master_Log_File | Read_Master_Log_Pos | Relay_Log_File   |
 Relay_Log_Pos | Relay_Master_Log_File | Slave_IO_Running |
 Slave_SQL_Running | Replicate_do_db | Replicate_ignore_db | Last_errno |
 Last_error | Skip_counter | Exec_master_log_pos |
 Relay_log_space |
 +-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
 | hubble  | replica | 3306| 60|
 hubble-bin.009  | 646906124   | gemini-relay-bin.008 |
 1006270724| hubble-bin.009  | No   | No
 | | | 0  | error 'unexpected
 success or fatal error' on query 'INSERT INTO COBGE7A' | 0
 | 646905758   | 1006271180  |
 +-+-+-+---+-+-+--+---+---+--+---+-+-++--+--+-+-+
 1 row in set (0.00 sec)
  
 the query shows a table that don't exists ( COBGE7A ) , so what I
 thought is that the relay log was corrupt. I'm trying to read the log
 with mysqlbinlog  : 
 
  mysqlbinlog -f gemini-relay-bin.008  nuevo.sql 
 
 and got :
 
 ERROR: Error in Log_event::read_log_event(): 'Event too small',
 data_len=0,event_type=0
 ERROR: Could not read entry at offset 909811060 : Error in log format or
 read error
 
 
  Could i skip the lines before the infamous offset number or  something
 else...? 
 
 Thanks in advance and have a good weekend.

-- 
Alvaro Avello [EMAIL PROTECTED]
Servinco S.A.


Re: Arguments to fight against Ms SQL Server and Oracle

2004-04-13 Thread Alvaro Avello
Leonardo : La verdad es que debes analizar lo que yo llamo ¿donde te 
aprieta el zapato? , esto quiere decir , que si requieres 
procedimientos almacenados y triggers y vistas , quizas oracle haga el 
trabajo. Si por otro lado la logica del negocio esta en tus 
aplicacciones y no requieres de estas caracteristicas que te nombre 
anteriormente Mysql es una buena opcion . la verdad es que debes leer 
respecto de las caracteristicas que hoy en dia tiene Mysql y comparar 
con los otros motores ya que como dicen por alli /la ignorancia es 
insolente/.

Saludos,
Alvaro Avello.
Jochem van Dieten wrote:

Leonardo Javier Belén wrote:

The staff on the other hand, is thinking in using ORACLE, and I need 
very solid arguments to beet them. Any ideas I can borrow?


If *you* don't know any arguments, then maybe Oracle is the best 
solution.

Jochem

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Re: mysql in a jail

2004-03-03 Thread Alvaro Avello
chrooted ?

Rhino wrote:

Maybe you could explain what a jail is. In 20+ years doing systems work
I've never heard that term mean anything but a place where criminals are
locked up.
Rhino

- Original Message - 
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, March 03, 2004 11:28 AM
Subject: mysql in a jail

 

I have a system running FreeBSD 4.9 four jails. MySQL is running in two of
   

the
 

jails and I am trying to add it to a 3rd jail. Starting the server gets
   

the
 

message:

 040302 19:34:15  mysql started
 040302 19:34:15  Can't start server : Bind on unix socket: Permission
   

denied
 

 040302 19:34:15  Do you already have another mysqld server running on
   

socket:
 

  /tmp/mysql.sock ?
 040302 19:34:15  Aborting
 040302 19:34:15  /usr/local/libexec/mysqld: Shutdown Complete
 040302 19:34:15  mysqld ended
The new jail was created by copying the file tree from a jail that had the
desired configuration and then doing clean-up as required. In response to
   

the
 

error I tried configuring mysqld to use a different port and socket file.
   

That
 

did not fix the problem. I had forgotten the other two mysql's are using
   

port
 

3306 and /tmp/mysql.sock.

I next removed mysql and its dependencies and reinstalled
   

mysql-server-4.0.16
 

using pkg_add. I am still getting the same error. At this point I think it
   

is a
 

jail problem with something I missed in clean-up but I do not know where
   

to look
 

next.

Having done all this, I recalled in installing the 2nd MySQL jail, it was
necessary to remove and reinstall mysql. In that instance the
   

re-installation
 

solved the problem.

Thanks for any ideas.

_
Douglas Denault
[EMAIL PROTECTED]
Voice: 301-469-8766
 Fax: 301-469-0601
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problem with wildcards in host field .

2004-02-06 Thread Alvaro Avello
Hi everybody :  I'm experiencing a trouble with user permissions and 
wildcards in the host field ( % ). I have several MySQL databases and we 
connect to them  through myodbc to Centura team developer apps . Since 
the beginning we create all the users with a wildcard in the host field 
because we needed to connect from  different LAN ' s . in the other hand 
,we build a web server with apache - php - mysql and started to create 
app's which we used to connect to the 'stand alone' MySQL Servers. 
Everything was fine, until  the web server crashed . So, we needed to 
move all the php app's to one of our MySQL  'stand alone' servers . 
since then we can not  connect through php to the databases located in 
the same server .  we have errors like ' access denied to [EMAIL PROTECTED] 
' and thats o.k. the questions is , the wildcard in host field doesn't  
involve  localhost o a machine host's ? Which kind of permissions we 
have to put in host fields to have a mobility and not to be afraid to 
move our servers for an emergency ?  the mysql version i'm using is 4.0.14 .

Thanks in Advance and happy weekend ¡ :-)

Saludos / Regards ,
Alvaro.
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Mysql Support Contract

2003-10-24 Thread Alvaro Avello
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Hi guys , I'm  sorry for this  very OT post , but i guess that someone
in the list can help me . I've made contact with a sales representant of
mysql to purchase a mysql support contract , but the communication seems
to be a little slow ( my company is in Chile - South America ). In fact
, I already know what kind of support i want to pay, but , i still can't
contact him to finish the transaction ( this is a kind of non OT thing
in a SQL list  :-) ) There's any chance that someone could give me a
name or a mail where i can send my info and finish this ?
Thanks in Advance ( And sorry for my poor english )

Saludos / Regards,

Alvaro Avello.

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Re: innodb file won't shrink

2003-07-15 Thread Alvaro Avello
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Sorry HeikkiCan you give me a few steps to obtain that...?

Thanks a lot.

Alvaro Avello.

Heikki Tuuri wrote:

|Alvaro,
|
|- Original Message -
|From: Alvaro Avello [EMAIL PROTECTED]
|To: Heikki Tuuri [EMAIL PROTECTED]
|Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
|Sent: Tuesday, July 15, 2003 1:13 AM
|Subject: Re: innodb file won't shrink
|
|
|-BEGIN PGP SIGNED MESSAGE-
|Hash: SHA1
|
|There 's any chance that in the future  every InnoDB table files from a
|determinated database can be placed in the same directory of the mysql (
|MyISAM ) database ? . My point is that if you want to take a binary
|backup of all databases in the mysql directory  and you want to restore
|just one of the databases , you could just copy the directory to the
|correct place and thats all you have to do to restore a single
|database.. I guess I'm getting tired to wait for the dump to
|re-create all the indexes and stuff like that.
|
|
|it will not be straightforward. The undo logs used to purge old versions of
|rows and roll back uncommitted transaction will not be placed to those
table
|files. But if you let the database to be silent and run purge to
completion,
|then you will get clean tables you can restore later individually to the
|database.
|
|Thanks In advance
|
|Saludos / Regards ,
|
|Alvaro Avello.
|
|
|Regards,
|
|Heikki
|
|walt wrote:
|
||Heikki Tuuri wrote:
||
||
||On September 15th, 2003 you will be able to put every InnoDB table
|into its
||own file. That should alleviate this kind of problem.
||
||
||Best regards,
||
||Heikki Tuuri
||Innobase Oy
||http://www.innodb.com
||Transactions, foreign keys, and a hot backup tool for MySQL
||Order MySQL technical support from https://order.mysql.com/
||
||
||That is great news! Will a single table be able to span several
||datafiles?
||
||Thanks!
||walt
||
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[Fwd: Bind Variables.]

2003-01-24 Thread Alvaro Avello
 Hi everybody:

I 'm actually having an problem trying to mygrate to mysql. it's true 
that mysql does not support bind variables ? . Actually the development 
in my company is over Centura team developer connected to Centura 
Sqlbase , and the code of the aplications is widely using bind variables 
. there is a workaround for this ? there is a posibility that in the 
future releases of mysql bind variables will be supported ?' thanks in 
advance.

Alvaro.




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Bind Variables.

2003-01-23 Thread Alvaro Avello
Hi everybody:
I 'm actually having an problem trying to mygrate to mysql. it's true 
that mysql does not support bind variables ? . Actually the development 
in my company is over Centura team developer connected to Centura 
Sqlbase , and the code of the aplications is widely using bind variables 
. there is a workaround for this ? there is a posibility that in the 
future releases of mysql bind variables will be supported ?' thanks in 
advance.

Alvaro.


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Re: Detecting Mysql servers on the network

2003-01-21 Thread Alvaro Avello
¿ ?

OT.

Defryn, Guy wrote:


Is it possible to detect mysql servers on the network without knowing the hostname?

cheers

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myodbc problem.

2002-12-18 Thread Alvaro Avello
Hi ¡ :

I Have a problem. I 'm connecting Centura Team Developer to Mysql Trough 
myodbc . when i send a select to the server , i can see that the select 
statement works fine. but when I evaluate the variables that the server 
returns , it returns the CHAR fields as empty values . this does not 
happen to an INT field. I ' ve check the database and the rows isn't 
empty. anybody has the same problem ?

Thanks In advance.

Saludos / Regards ,

Alvaro Avello.

System Administrator.
Servinco S.A.
Santiago , Chile.



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