Re: mysqldump syntax - dumping only specific tables starting with a certain character. (e.g. z*)

2009-04-19 Thread Uwe Kiewel
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Hash: SHA1

ChoiSaehoon schrieb:
 I tried it, then it gives the following error message
  
 mysqldump: Can't get CREATE TABLE for table 'ls z*' (Table '(db-name).ls z*' 
 doesn't exist)
  
 What does 'ls' mean? (as in linux command 'ls'?)

you have to use the ` sign, not the '

Uwe



  
 :)
 
  
 Date: Sun, 19 Apr 2009 08:53:36 -0500
 Subject: Re: mysqldump syntax - dumping only specific tables starting with a 
 certain character. (e.g. z*)
 From: jlyons4...@gmail.com
 To: saeho...@hotmail.com
 CC: mysql@lists.mysql.com

 try something like:

 mysqldump -u(user) -p (db-name) `ls z*`  (filename)


 2009/4/19 ChoiSaehoon saeho...@hotmail.com

 Is there a way to dump only specific tables starting with a certain
 character?



 For example, I only want to dump tables starting with the character 'z'.

 The following doesn't work.

 mysqldump -u(user) -p (db-name) z*  (filename)



 Do I have to use regular expression here?



 Please help  thanks in advance.

 _
 MSN 메신저의 차세대 버전, Windows Live Messenger!
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 -- 
 Jim Lyons
 Web developer / Database administrator
 http://www.weblyons.com
 
 _
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Re: mysqldump syntax - dumping only specific tables starting with a certain character. (e.g. z*)

2009-04-19 Thread Uwe Kiewel
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ChoiSaehoon schrieb:
 Thanks Uwe,
  
 I used ` now. It says
 ls: z*: no such file or directory exists

You need to use the path full qualified, e.g. ls /var/lib/mysql/db/z*,
or wherever your mysql installation live.


  
 then, when I enter the password it dumps all the tables. (instead of
 tables starting with 'z')
  
 Yes, I'm a newbie. (I didn't know to use ` instead of '...)
  
 But please help me. Plz tell me what I've done wrongly this time. :)
  
 
  
 Date: Sun, 19 Apr 2009 16:29:48 +0200
 From: m...@kiewel-online.ch
 To: saeho...@hotmail.com
 CC: mysql@lists.mysql.com
 Subject: Re: mysqldump syntax - dumping only specific tables starting
 with a certain character. (e.g. z*)

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 ChoiSaehoon schrieb:
  I tried it, then it gives the following error message
 
  mysqldump: Can't get CREATE TABLE for table 'ls z*' (Table
 '(db-name).ls z*' doesn't exist)
 
  What does 'ls' mean? (as in linux command 'ls'?)

 you have to use the ` sign, not the '

 Uwe



 
  :)
 
 
  Date: Sun, 19 Apr 2009 08:53:36 -0500
  Subject: Re: mysqldump syntax - dumping only specific tables
 starting with a certain character. (e.g. z*)
  From: jlyons4...@gmail.com
  To: saeho...@hotmail.com
  CC: mysql@lists.mysql.com
 
  try something like:
 
  mysqldump -u(user) -p (db-name) `ls z*`  (filename)
 
 
  2009/4/19 ChoiSaehoon saeho...@hotmail.com
 
  Is there a way to dump only specific tables starting with a certain
  character?
 
 
 
  For example, I only want to dump tables starting with the
 character 'z'.
 
  The following doesn't work.
 
  mysqldump -u(user) -p (db-name) z*  (filename)
 
 
 
  Do I have to use regular expression here?
 
 
 
  Please help  thanks in advance.
 
  _
  MSN 메신저의 차세대 버전, Windows Live Messenger!
  http://windowslive.msn.co.kr/wlm/messenger/
 
 
 
  --
  Jim Lyons
  Web developer / Database administrator
  http://www.weblyons.com
 
  _
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 Hotmail! 지금 로그인해 보세요!
  http://www.hotmail.com

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binlog question

2009-04-18 Thread Uwe Kiewel
Hi,

is it possible to have separated binlogs for each mysql-db?

Thanks,
Uwe

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Re: binlog question

2009-04-18 Thread Uwe Kiewel

Michael Dykman schrieb:

No, I'm afraid not.


So, how it's possible to replicate one specific db? I have 4 db's 
writing into binlog. I need only one of them at client site. After the 
successful setup of the replication I get errors on client site like no 
such table, no such database etc...


Thanks, 
Uwe


 - michael dykman

On Sat, Apr 18, 2009 at 7:11 AM, Uwe Kiewel m...@kiewel-online.ch wrote:

Hi,

is it possible to have separated binlogs for each mysql-db?

Thanks,
   Uwe

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Re: binlog question

2009-04-18 Thread Uwe Kiewel

Baron Schwartz schrieb:

So, how it's possible to replicate one specific db? I have 4 db's writing
into binlog. I need only one of them at client site. After the successful
setup of the replication I get errors on client site like no such table, no
such database etc...


On the slave side, use --replicate-wild-do-table=db.%

I would stay away from any of the do-db or ignore-db settings.



Can you explain, why?

Thanks,
Uwe

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Re: MySQL runs on 16-cores server

2009-04-11 Thread Uwe Kiewel
Moon's Father wrote:
 Thank you very much.
  Could you tell me what is IIRC?

If I remember correctly.

HTH,
Uwe

 
 
  
 On Fri, Apr 10, 2009 at 8:24 PM, Uwe Kiewel m...@kiewel-online.ch wrote:
 
 Moon's Father wrote:
  Hi.
 If the server has 16 cores, how to set parameters to make MySQL
 runs
  well.
 
 IIRC is mysqld multi threaded - so if you have parallel queries, mysqld
 will spam multiple threads across multiple cores.
 
 HTH,
Uwe
 
 
 
 
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 More about me just visit here:
 http://yueliangdao0608.cublog.cn


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Re: MySQL runs on 16-cores server

2009-04-10 Thread Uwe Kiewel
Moon's Father wrote:
 Hi.
If the server has 16 cores, how to set parameters to make MySQL runs
 well.

IIRC is mysqld multi threaded - so if you have parallel queries, mysqld
will spam multiple threads across multiple cores.

HTH,
Uwe


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[Fwd: Re: Is it a bug or my mistake in server configuration?]

2008-11-10 Thread Uwe Kiewel
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Hash: SHA1

This mailing list has a stupid configuration. Pressing the answer
button, the message goes to the sender not to the list :-(

-  Original-Nachricht 
Betreff: Re: Is it a bug or my mistake in server configuration?
Datum: Mon, 10 Nov 2008 18:36:34 +0100
Von: Uwe Kiewel [EMAIL PROTECTED]
An: Alexey Vlasov [EMAIL PROTECTED]
Referenzen: [EMAIL PROTECTED]

Alexey Vlasov schrieb:
 open files  (-n) 1024


just a shot to the blue:

can you count your open files with lsof?

HTH,
Uwe
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Re: Is it a bug or my mistake in server configuration?

2008-11-10 Thread Uwe Kiewel
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Curtis Maurand schrieb:
 
 I've been having the same trouble in a Xen virtual machine.  After about
 an hour and a half, mysql will be consuming 100% of cpu.  There is
 nothing wrong with the tables.  I'm assuming its a dynamic vs. fix
 amount of memory available to mysql.  I'm guaranteed x amount of ram,
 but that might get reduced due to server load.  I'm assuming mysql
 doesn't like having ram taken away from it and get into a tizzy about it.
 
 I've been forced to restart mysql hourly in order to get smooth operation.

You are dealing with the impact, not with the reason. It can only be a
workaround.

Did you have a look at you machine regarding paging activity?

Uwe
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Re: [Fwd: Re: Is it a bug or my mistake in server configuration?]

2008-11-10 Thread Uwe Kiewel
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Andy Shellam schrieb:
 
 This mailing list has a stupid configuration. Pressing the answer
 button, the message goes to the sender not to the list :-(
   
 
 Hint - use Reply to All - it's not specific to this mailing list. :-)
 

It dosn't make sense to the a reply to the list and the sender.

The described procedure works fine at other mailing lists...


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Re: [Fwd: Re: Is it a bug or my mistake in server configuration?]

2008-11-10 Thread Uwe Kiewel
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John Daisley schrieb:
 Hit 'Reply to All' instead of reply.
 

Is is okay for you the have your answers twice? If I post to a list, I
read that list. So there is no need to have the ansers at the list and
in my inbox

Uwe
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how to create a trigger

2008-10-26 Thread Uwe Kiewel
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Hi,

I have 2 databases: production_db and test_db. Both databases have the
same tables. Now, I want to do as follows:

If a new record is inserted to the production_db interst the same recort
into the test_db.

I am pretty sure, it's a case fo a trigger, but I don't know how to
difine it.

Thanks,
Uwe



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Re: Rotate regular log file only

2008-10-23 Thread Uwe Kiewel
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Hash: SHA1

Olaf Stein schrieb:
 Hi all

 Is it possible to rotate just the regular (--log) log file?

I am not sure if it will be safe, but maybe with logrotate and for
/var/log/mysqld.log the copytruncate option for logrotate.

 If I do flush-logs I have to tell my slaves that (at least I have done so in
 the past, maybe I don't and the slves realizes by itself?)

I think so, b/c I've never told my slaves...

HTH,
Uwe
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Re: MySQL Sort by Array

2008-10-22 Thread Uwe Kiewel
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Keith Spiller schrieb:
 Hi Guys,

 I'm trying to sort by a particular order:

 SELECT * FROM tablename
 WHERE id='5' OR id='9' OR id='25' OR id='34'

what about ... WHERE id in (5, 9, 25, 34) ...

 ORDER BY id(5, 34, 9, 25)

like the others said


 Can anyone tell me the proper syntax to accomplish this task?

 Thanks for your help.

 Keith

Uwe

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can not start slave after slave crash

2008-10-21 Thread Uwe Kiewel
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Hi,

my replication slave crashed. Now, I am unable to restart with following
error message:

081021 21:34:21 [Note] Slave SQL thread initialized, starting
replication in log 'log.000129' at position 28457291, relay log
'/video/mysql/mysqld-relay-bin.000331' position: 10541803
081021 21:34:21 [ERROR] Slave: Query caused different errors on master
and slave. Error on master: 'Table '%-.64s' already exists' (1050),
Error on slave: 'You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the right syntax to
use near '' at line 1' (1064). Default database: 'firewall'. Query:
'CREATE ALGORITHM=UNDEFINED [EMAIL PROTECTED] SQL SECURITY INVOKER VIEW
`drops_udp` AS ', Error_code: 0
081021 21:34:21 [ERROR] Error running query, slave SQL thread aborted.
Fix the problem, and restart the slave SQL thread with SLAVE START. We
stopped at log 'log.000129' position 28457291


Does the master or the slave have an error? What do I have to do to fix
this issue?


Thanks,
Uwe
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Query Cache questions

2008-09-17 Thread Uwe Kiewel
Hi,

I have two questions regarding the query cache:

1. What is the difference between query_cache_limit and query_cache_size?

mysql show variables like '%query_cache%';

have_query_cache | YES  |
query_cache_limit| 1048576  |
query_cache_min_res_unit | 4096 |
query_cache_size | 20971520 |
query_cache_type | ON   |
query_cache_wlock_invalidate | OFF  |


2. Would an increase of the query cache size bring a positive effect to
the performance?

mysqlshow status like '%Qcache%';

Qcache_free_blocks  | 414  |
Qcache_free_memory  | 17000952 |
Qcache_hits | 228827   |
Qcache_inserts  | 731980   |
Qcache_lowmem_prunes| 0|
Qcache_not_cached   | 70644|
Qcache_queries_in_cache | 3042 |
Qcache_total_blocks | 6584 |

3. How can I calculate a query cache hit rate?


Thanks, 
Uwe

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Re: Query Cache questions

2008-09-17 Thread Uwe Kiewel
Bard Aase schrieb:
 On Wed, Sep 17, 2008 at 11:37 AM, Uwe Kiewel [EMAIL PROTECTED] wrote:
 Hi,

 I have two questions regarding the query cache:

 1. What is the difference between query_cache_limit and query_cache_size?
 
 query_cache_limit is the maximum size of a single resultset in the
 cache. If your query results in a bigger resultset it will never get
 into the cache even if its room for it in the cache itself.
 
 query_cache_size is the maximum amount of data that may be stored in the 
 cache.

Do you talk about all usable cache memory for all resultsets?

Thanks,
Uwe



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mysql logfile configuration

2008-04-18 Thread Uwe Kiewel
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Hash: SHA1

Hi @all,

ich have configured in /etc/my.cf as follow:

[...]
log=/var/log/mysqld.log
[...]


Now, mysqld writes every query to the log file. How can I avoid the
queries in the log file? I want to see any action done by mysql, but not
the queries.

Thx,
Uwe
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Re: only myisam storage engine

2008-04-03 Thread Uwe Kiewel

Ananda Kumar schrieb:

Hi All,
i set the skip-innodb in my.cnf, but when i do  the below, it still shows
some default values assigned to innodb parameters, can i avoid this as there
is some amount of memory allocated to innodb, and i dont what that. I want
all resource to allocated to only myisam. Please let me know how i can
achive this.

  



maybe compile mysql without innodb support






mysql show variables like '%innodb%';
+-+--+
| Variable_name   | Value|
+-+--+
| have_innodb | DISABLED |
| innodb_additional_mem_pool_size | 1048576  |
| innodb_autoextend_increment | 8|
| innodb_buffer_pool_awe_mem_mb   | 0|
| innodb_buffer_pool_size | 8388608  |
| innodb_checksums| ON   |
| innodb_commit_concurrency   | 0|
| innodb_concurrency_tickets  | 500  |
| innodb_data_file_path   |  |
| innodb_data_home_dir|  |
| innodb_doublewrite  | ON   |
| innodb_fast_shutdown| 1|
| innodb_file_io_threads  | 4|
| innodb_file_per_table   | OFF  |
| innodb_flush_log_at_trx_commit  | 1|
| innodb_flush_method |  |
| innodb_force_recovery   | 0|
| innodb_lock_wait_timeout| 50   |
| innodb_locks_unsafe_for_binlog  | OFF  |
| innodb_log_arch_dir |  |
| innodb_log_archive  | OFF  |
| innodb_log_buffer_size  | 1048576  |
| innodb_log_file_size| 5242880  |
| innodb_log_files_in_group   | 2|
| innodb_log_group_home_dir   |  |
| innodb_max_dirty_pages_pct  | 90   |
| innodb_max_purge_lag| 0|
| innodb_mirrored_log_groups  | 1|
| innodb_open_files   | 300  |
| innodb_rollback_on_timeout  | OFF  |
| innodb_support_xa   | ON   |
| innodb_sync_spin_loops  | 20   |
| innodb_table_locks  | ON   |
| innodb_thread_concurrency   | 8|
| innodb_thread_sleep_delay   | 1|
+-+--+







On 4/2/08, Ananda Kumar [EMAIL PROTECTED] wrote:
  

Hi All,
Thanks a lot for you reply. Will do this setup.

regards
anandkl


 On 4/2/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:


Hi,
Enter in my.cnf file
[mysqld]
skip-bdb
skip-innodb

Regards
Rakesh

-Original Message-
From: Ananda Kumar [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 02, 2008 9:59 AM
To: MySql
Subject: only myisam storage engine

Hi All,
We have a linux box running debain, with 8 cpu and 8 GB RAM, we want
only myisam engine to be running on this.

So, should i not setup any innodb parameters or is there any other way
to have only myisam engine running on this machine, please let me know.

regards
anandkl

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