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• Postgresql by network

  - by sev

  I have running PostgreSQL sever on 192.168.0.102:5432. postgresql.conf has this line: listen_addresses = '*' and pg_hba.conf has this one: host all all 127.0.0.1/32 trust I have Rails app with same config/database.yml development: adapter: postgresql host: 192.168.0.102 port: 5432 encoding: unicode database: test pool: 5 username: test password: But when I run rake db:migrate I get (I run this from 192.168.0.100) FATAL: no pg_hba.conf entry for host "192.168.0.100", user "test", database "postgres", SSL on FATAL: no pg_hba.conf entry for host "192.168.0.100", user "test", database "postgres", SSL off ... Who can help with this?

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• 100% CPU load on Ubuntu 10.04.3 LTS 64bit

  - by deadtired

  I have 2 days since I am trying to fix this issue, with no success. The server is a mysql database server. Hardware: DELL Poweredge 1950, 2x Intel Xeon Quad Core E5345 @ 2.33GHz, 16 Gb mem, 2x 146Gb SAS (software RAID1) Software: Ubuntu 10.04.3 LTS, MySQL 5.1.41 Issue: while mysql is not used and runs with no database, everything seems alright. As soon as I install a database, it has the reason to bring all 8 cores in 100% with low memory consumption. So, you can imagine the load average goes high (I saw 212 load average for the first time). The server doesn't become unresponsive, but you can see it's slow while browsing the project installed. Additional info: the database used is not more than 24MB and it was moved from a server with less resources and a lot more larger databases. So it's not the database/project. my.cnf is not a reason also, as I used both default one and the one I use on the same distribution on another server.What is interesting is that mysql doesn't close any process and runs to the limit of the max_connections. Logs are quiet. Nothing there. I switched to this Ubuntu version after I suspected some problems in the newly Ubuntu 11.10 server. This one worked alright for an hour after I made a kernel upgrade to 3.0.1 (it was using the memory also) I tested disk speed and seems alright. Some more output on the running server: dstat -cndymlp -N total -D total 3: htop command: Idea? Did anyone meet the same problem? Any fix you can think of?

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• CPU Utilization LAMP stack

  - by Max

  We've got an ec2 m2.4xlarge running Magento (centos 5.6, httpd 2.2, php 5.2.17 with eaccelerator 0.9.5.3, mysql 5.1.52). Right now we're getting a large traffic spike, and our top looks like this: top - 09:41:29 up 31 days, 1:12, 1 user, load average: 120.01, 129.03, 113.23 Tasks: 1190 total, 18 running, 1172 sleeping, 0 stopped, 0 zombie Cpu(s): 97.3%us, 1.8%sy, 0.0%ni, 0.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.4%st Mem: 71687720k total, 36898928k used, 34788792k free, 49692k buffers Swap: 880737784k total, 0k used, 880737784k free, 1586524k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2433 mysql 15 0 23.6g 4.5g 7112 S 564.7 6.6 33607:34 mysqld 24046 apache 16 0 411m 65m 28m S 26.4 0.1 0:09.05 httpd 24360 apache 15 0 410m 60m 25m S 26.4 0.1 0:03.65 httpd 24993 apache 16 0 410m 57m 21m S 26.1 0.1 0:01.41 httpd 24838 apache 16 0 428m 74m 20m S 24.8 0.1 0:02.37 httpd 24359 apache 16 0 411m 62m 26m R 22.3 0.1 0:08.12 httpd 23850 apache 15 0 411m 64m 27m S 16.8 0.1 0:14.54 httpd 25229 apache 16 0 404m 46m 17m R 10.2 0.1 0:00.71 httpd 14594 apache 15 0 404m 63m 34m S 8.4 0.1 1:10.26 httpd 24955 apache 16 0 404m 50m 21m R 8.4 0.1 0:01.66 httpd 24313 apache 16 0 399m 46m 22m R 8.1 0.1 0:02.30 httpd 25119 apache 16 0 411m 59m 23m S 6.8 0.1 0:01.45 httpd Questions: Would giving msyqld more memory help it cache queries and react faster? If so, how? Other than splitting mysql and php to separate servers (which we're about to do) is there anything else we could/should be doing? Thanks! UPDATE: Here's our my.cnf along with the output of mysqltuner. It looks like a cache problem. Thanks again! # cat /etc/my.cnf [client] port = **** socket = /var/lib/mysql/mysql.sock [mysqld] datadir=/mnt/persistent/mysql port=**** socket=/var/lib/mysql/mysql.sock key_buffer = 512M max_allowed_packet = 64M table_cache = 1024 sort_buffer_size = 8M read_buffer_size = 4M read_rnd_buffer_size = 2M myisam_sort_buffer_size = 64M thread_cache_size = 128M tmp_table_size = 128M join_buffer_size = 1M query_cache_limit = 2M query_cache_size= 64M query_cache_type = 1 max_connections = 1000 thread_stack = 128K thread_concurrency = 48 log-bin=mysql-bin server-id = 1 wait_timeout = 300 innodb_data_home_dir = /mnt/persistent/mysql/ innodb_data_file_path = ibdata1:10M:autoextend innodb_buffer_pool_size = 20G innodb_additional_mem_pool_size = 20M innodb_log_file_size = 64M innodb_log_buffer_size = 8M innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 50 innodb_thread_concurrency = 48 ft_min_word_len=3 [myisamchk] ft_min_word_len=3 key_buffer = 128M sort_buffer_size = 128M read_buffer = 2M write_buffer = 2M # ./mysqltuner.pl >> MySQLTuner 1.2.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.52-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB +Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 2G (Tables: 26) [--] Data in InnoDB tables: 749M (Tables: 250) [!!] Total fragmented tables: 262 -------- Security Recommendations ------------------------------------------- -------- Performance Metrics ------------------------------------------------- [--] Up for: 31d 2h 30m 38s (680M q [253.371 qps], 2M conn, TX: 4825B, RX: 236B) [--] Reads / Writes: 89% / 11% [--] Total buffers: 20.6G global + 15.1M per thread (1000 max threads) [OK] Maximum possible memory usage: 35.4G (51% of installed RAM) [OK] Slow queries: 0% (35K/680M) [OK] Highest usage of available connections: 53% (537/1000) [OK] Key buffer size / total MyISAM indexes: 512.0M/457.2M [OK] Key buffer hit rate: 100.0% (9B cached / 264K reads) [OK] Query cache efficiency: 42.3% (260M cached / 615M selects) [!!] Query cache prunes per day: 4384652 [OK] Sorts requiring temporary tables: 0% (1K temp sorts / 38M sorts) [!!] Joins performed without indexes: 100404 [OK] Temporary tables created on disk: 17% (7M on disk / 45M total) [OK] Thread cache hit rate: 99% (537 created / 2M connections) [!!] Table cache hit rate: 0% (1K open / 946K opened) [OK] Open file limit used: 9% (453/5K) [OK] Table locks acquired immediately: 99% (758M immediate / 758M locks) [OK] InnoDB data size / buffer pool: 749.3M/20.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Enable the slow query log to troubleshoot bad queries Adjust your join queries to always utilize indexes Increase table_cache gradually to avoid file descriptor limits Variables to adjust: query_cache_size (> 64M) join_buffer_size (> 1.0M, or always use indexes with joins) table_cache (> 1024)

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• Spring-mvc project can't select from a particular mysql table

  - by Dan Ray

  I'm building a Spring-mvc project (using JPA and Hibernate for DB access) that is running just great locally, on my dev box, with a local MySQL database. Now I'm trying to put a snapshot up on a staging server for my client to play with, and I'm having trouble. Tomcat (after some wrestling) deploys my war file without complaint, and I can get some response from the application over the browser. When I hit my main page, which is behind Spring Security authentication, it redirects me to the login page, which works perfectly. I have Security configured to query the database for user details, and that works fine. In fact, a change to a password in the database is reflected in the behavior of the login form, so I'm confident it IS reaching the database and querying the user table. Once authenticated, we go to the first "real" page of the app, and I get a "data access failure" error. The server's console log gets this line (redacted): ERROR org.hibernate.util.JDBCExceptionReporter - SELECT command denied to user 'myDbUser'@'localhost' for table 'asset' However, if I go to MySQL from the shell using exactly the same creds, I have no problem at all selecting from the asset table: [development@tomcat01stg]$ mysql -u myDbUser -pmyDbPwd dbName ... mysql> \s -------------- mysql Ver 14.12 Distrib 5.0.77, for redhat-linux-gnu (i686) using readline 5.1 Connection id: 199 Current database: dbName Current user: myDbUser@localhost ... UNIX socket: /var/lib/mysql/mysql.sock -------------- mysql> select count(*) from asset; +----------+ | count(*) | +----------+ | 19 | +----------+ 1 row in set (0.00 sec) I've broken down my MySQL access settings, cleaned out the user and re-run the grant commands, set up a version of the user from 'localhost' and another from '%', making sure to flush permissions.... Nothing is changing the behavior of this thing. What gives?

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• problems installing mysql and phpmyadmin to localhost

  - by Joel

  Hi guys, I know there have been many similar questions, but as far as I can tell, most of the other people have gotten further than I have... I'm trying to get a WAMP setup happening. I've got PHP and Apache running and talking to each other. PHP is in c:\PHP Apache is in it's default program files folder. mySQL is in it's default install location. I have localhost setup at D:\public_html\ I'm able to navigate to localhost and see html and php files. But I have a simple mySQL test file: <?php // hostname or ip of server (for local testing, localhost should work) $dbServer='localhost'; // username and password to log onto db server $dbUser='root'; $dbPass=''; // name of database $dbName='test'; $link = mysql_connect("$dbServer", "$dbUser", "$dbPass") or die("Could not connect"); print "Connected successfully<br>"; mysql_select_db("$dbName") or die("Could not select database"); print "Database selected successfully<br>"; // close connection mysql_close($link); ?> When I try and open this, I get "could not connect" Now, I haven't even created a database yet, because I can't log into mySQL with phpmyadmin-so I think I've done something wrong in my mySQL install because they aren't talking to each other. I guess my main question is how do I first create a database in mySQL to be sure I have even installed it correctly?

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• Why does MySql have 'utf8' for collation on its information_schema but latin1_swedish on all other d

  - by PoppySeeds

  Using the latest version of MySql. I created a database, it defaulted to Latin1_Swedish, and just noticed that the 'mysql' database also has Latin1_Swedish. Only the information_schema has a collation of utf8_general_ci. Should I be changing my database to utf8? And if so, how?

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• Compressing and copying large files on Windows Server?

  - by Aaron

  I've been having a hard time copying large database backups from the database server to a test box at another site. I'm open to any ideas that would help me get this database moved without having to resort to a USB hard drive and the mail. The database server is running Windows Server 2003 R2 Enterprise, 16 GB of RAM and two quad-core 3.0 GHz Xeon X5450s. Files are SQL Server 2005 backup files between 100 GB and 250 GB. The pipe is not the fastest and SQL Server backup files typically compress down to 10-40% of the original, so it made sense to me to compress the files first. I've tried a number of methods, including: gzip 1.2.4 (UnxUtils) and 1.3.12 (GnuWin) bzip2 1.0.1 (UnxUtils) and 1.0.5 (Cygwin) WinRAR 3.90 7-Zip 4.65 (7za.exe) I've attempted to use WinRAR and 7-Zip options for splitting into multiple segments. 7za.exe has worked well for me for database backups on another server, which has ~50 GB backups. I've also tried splitting the .BAK file first with various utilities and compressing the resulting segments. No joy with that approach either- no matter the tool I've tried, it ends up butting against the size of the file. Especially frustrating is that I've transferred files of similar size on Unix boxes without problems using rsync+ssh. Installing an SSH server is not an option for the situation I'm in, unfortunately. For example, this is how 7-Zip dies: H:\dbatmp>7za.exe a -t7z -v250m -mx3 h:\dbatmp\zip\db-20100419_1228.7z h:\dbatmp\db-20100419_1228.bak 7-Zip (A) 4.65 Copyright (c) 1999-2009 Igor Pavlov 2009-02-03 Scanning Creating archive h:\dbatmp\zip\db-20100419_1228.7z Compressing db-20100419_1228.bak System error: Unspecified error

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• SQL Server tempdb size seems large, is this normal?

  - by Abe Miessler

  From what I understand the system database is used to hold temporary tables, intermediate results and other temporary information. On one of my database instances I have a tempdb that is seems very large (30GB). This database has not been modified (as in "last modified date" on the mdf file) in over a week. Is it normal to have the temp db remain that large for that long of a period? It seems to me that it should be updating fairly often and returning space that it is using fairly quickly... Am I way off here or is SQL Server doing something weird? FYI: This is a SharePoint 2010 database, not sure if that makes a difference.

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• Syntax for DBCC CHECKTABLE on all indexes?

  - by GuinnessFan

  Just want to check the syntax to make sure this is for one table and all indexes (default?). --must be single user ALTER DATABASE database_name SET SINGLE_USER; DBCC CHECKTABLE ( "table_name" , REPAIR_ALLOW_DATA_LOSS ) WITH ALL_ERRORMSGS; -- TURN BACK MULTI USER ALTER DATABASE database_name SET MULTI_USER; Also, should I be in the database containing the table to repair or should I be in master?

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• Biztalk 2009 install help

  - by _pemex99_

  Hi, I try to install Biztalk2009, with SQL 2008R2CTPNov, on Win Server 2008. I'm blocked at the configuration step "groups" : [19:22:18 Info Configuration Framework]Configuring feature: WMI [19:22:18 Info BtsCfg] Entering function: CBtsCfg::ConfigureFeature [19:22:18 Info BtsCfg] Configuring feature: WMI [19:22:18 Info BtsCfg] Entering function: CBtsCfg::IsSelectedAnswer [19:22:18 Info BtsCfg] Leaving function: CBtsCfg::IsSelectedAnswer [19:22:18 Info BtsCfg] Entering function: CWMI::Connect [19:22:18 Info BtsCfg] WMI is already connected [19:22:18 Info BtsCfg] Leaving function: CWMI::Connect [19:22:18 Info ConfigHelper] NT group BizTalk Server Operators was not created because it already exists [19:22:18 Info ConfigHelper NetAPI Info: ] Le groupe local spécifié existe déjà. [19:22:18 Info ConfigHelper] NT group BizTalk Server Administrators was not created because it already exists [19:22:18 Info ConfigHelper NetAPI Info: ] Le groupe local spécifié existe déjà. [19:22:18 Info BtsCfg] Entering function: CWMI::CreateGroup 2010-01-14 19:22:18:0527 [INFO] WMI CWMIInstProv::PutInstance() try to acquire lock 2010-01-14 19:22:18:0539 [INFO] WMI CWMIInstProv::PutInstance() lock acquired successfully 2010-01-14 19:22:18:0546 [INFO] WMI CWMIInstProv::VerifyMgmtDbCompatibility(CInstance) started 2010-01-14 19:22:18:0553 [INFO] WMI CWMIInstProv::VerifyMgmtDbCompatibility(CInstance) finished successfully 2010-01-14 19:22:18:0564 [INFO] WMI CWMIInstProv::PutInstance(MSBTS_GroupSetting.MgmtDbName="BizTalkMgmtDb",MgmtDbServerName="ECTXEVLBZTK") started 2010-01-14 19:22:18:0572 [INFO] WMI CAdapter::ConvertWMI2Admin() started 2010-01-14 19:22:18:0581 [INFO] WMI CDataContainer::SetWCHAR() - Possible problem: item value is overwritten 2010-01-14 19:22:18:0591 [INFO] WMI CAdapter::ConvertWMI2Admin() finished with HR=0 2010-01-14 19:22:18:0611 [INFO] WMI QueryStringValue query regkey 'MgmtDBServer' 2010-01-14 19:22:18:0620 [INFO] WMI CAdmCoreGroupInst::TryCreateNewGroup() started 2010-01-14 19:22:18:0632 [INFO] WMI Creating Mgmt database... 2010-01-14 19:22:18:0641 [INFO] WMI Calling CDataSource.Open() against ECTXEVLBZTK\master 2010-01-14 19:22:18:0792 [INFO] WMI CDataSource.Open() returned 2010-01-14 19:22:18:0810 [WARN] AdminLib GetBTSMessage: hrErr=80040e1d; Msg=Error "0x80040E1D" occurred.; 2010-01-14 19:22:18:0824 [WARN] AdminLib GetBTSMessage: hrErr=c0c02524; Msg=Failed to create Management database "BizTalkMgmtDb" on server "ECTXEVLBZTK". Error "0x80040E1D" occurred.; 2010-01-14 19:22:18:0835 [ERR] WMI Failed in pAdmInst->Create() in CWMIInstProv::PutInstance(). HR=c0c02524 2010-01-14 19:22:18:0846 [ERR] WMI WMI error description is generated: Failed to create Management database "BizTalkMgmtDb" on server "ECTXEVLBZTK". Error "0x80040E1D" occurred. 2010-01-14 19:22:18:0860 [INFO] WMI CWMIInstProv::PutInstance() finished. HR=c0c02524 [19:22:18 Error BtsCfg] f:\bt\890\private\source\setup\prod\btssetup\btscfg\btswmi.cpp(358): FAILED hr = c0c02524 [19:22:18 Error BtsCfg] Failed to create Management database "BizTalkMgmtDb" on server "ECTXEVLBZTK". Error "0x80040E1D" occurred. It seems that the install can't create Managment database, But the SSO database is created OK... Has someone a clue ?

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• Slow connection to Linux MySQL from Windows only (XAMPP)

  - by Josh

  I'm having a problem with a PHP project (using Kohana 3.2 framework) on my Windows 7 64-bit machine connecting to the database. The development database is stored on a Ubuntu Linux server on the local network. Other development machines running OSX and Linux are connecting fine. There are no other Windows development machines to test with. I can access MySQL fine using MySQL Workbench, and other projects (which I believe to be less database heavy) run mostly ok, only occasionally getting timeout messages. I'm constantly getting Maximum execution time of 30 seconds exceeded when functions such as mysql_query() are run in this particular project. Specifically, the Kohana file where the timeout occurs is MODPATH\database\classes\kohana\database\mysql.php [ 186 ]. My local set-up is: Windows 7 Professional 64bit XAMPP 1.7.7 (PHP 5.3.8) The output of uname -a of the Linux server is: Linux peach 2.6.38-11-server #50-Ubuntu SMP Mon Sep 12 21:34:27 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux I've tried the following, with no success: Disabling Windows firewall Switching between using a persistant and normal connection In my.cnf, adding skip-name-resolve Increasing wait_timeout Enabling bind-address I've run out of ideas now, and have no idea how to debug an odd issue like this. Has anyone come across this before, or have any idea how I could find the root of the issue, or what might be the problem?

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• postgresql 9.1 Multiple Cluster on same host

  - by user1272305

  I have 2 cluster databases, running on the same host, Ubuntu. My fist database port is set to default but my second database port is set to 5433 in the postgresql.conf file. While everything is ok with local connections, I cannot connect using any of my tools to the second database with port 5433, including pgAdmin. Please help. Any parameter that I need to modify for the new database with port 5433? netstat -an | grep 5433 shows, tcp 0 0 0.0.0.0:5433 0.0.0.0:* LISTEN tcp6 0 0 :::5433 :::* LISTEN unix 2 [ ACC ] STREAM LISTENING 72842 /var/run/postgresql/.s.PGSQL.5433 iptables -L shows, Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination

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• Oracle Disaster Recovery On Linux

  - by Sopolin

  My oracle database is store on Linux system. And My Linux system is down. So I want to restore my oracle database when I setup Linux system already but I don't know how to restore it. Do anyone can help to guide to restore and recover my database?

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• Apache httpd + FreeTDS hangs until restarted

  - by Jordan Reiter

  Every so often requests to a Linux server (say, linux.example.org) where the web app (Django) pulls in data from a SQL Server database via FreeTDS will hang. Requests on other servers pointing to the database still work, as do requests on linux.example.org that use local MySQL databases. Only the server plus FreeTDS appear to be affected. Restarting httpd makes the database connections work correctly again. What could cause this problem? Using: Centos 5.9 freetds 0.91 Apache httpd 2.2.3 /etc/obdc.ini: [DSN] Description = SQL Server 2005 Driver = FreeTDS ;Database = dbname Servername = SERVERNAME ;TDS_Version = 8.0 /etc/freetds.conf: [SERVERNAME] driver = /usr/lib64/libtdsodbc.so host = db.example.org port = 1433 tds version = 8.0 client charset = UTF-8

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• Trouble "turning off" dialtone in Exchange 2010

  - by makerofthings7

  Given that there are two ways to enable dial tone, I'm having trouble turing it off. The two ways I'm aware of are: Dismount the database, delete it or rename it, mount it, Exchange will prompt for a dial tone creation. Run the command: Get-Mailbox -Database DB1 | Set-Mailbox -Database DTDB1 as described here Both options should result in Outlook "thinking" it's in dial tone mode. Since my goal is to shut off dial tone, I think I need to learn the specific, technical parameters that "tell" Outlook that it is in dial tone mode. Question How can I turn off dial tone for a given database? What tells outlook that it's in dial tone mode?

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• Write hash password to LDAP when creating a new user

  - by alibaba

  I am working on a project with a central user database system. One of the requirements of the system is that there should be only one set of users for all the application. FreeRADIUS and Samba are two my applications that both use LDAP as their backend. Since users must be the same for the entire system that contains many other applications, I have to read the list of users from the central database and recreate them in the LDAP directories for Samba and FreeRADIUS. The problem is that users are sent to me from another entity and I can save them in the database with their hash passwords. I don't have access to their cleartext passwords. I am wondering if I could enter directly a hash password for a new user in LDAP with my preferred hash mechanism. If not, can any one tell me what strategy I have to use? I am running my server on UBUNTU 12.04 and all other applications are the latest versions. My database system is PostgreSQL 9.2. Thank you

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• mySQL Optimization Suggestions

  - by Brian Schroeter

  I'm trying to optimize our mySQL configuration for our large Magento website. The reason I believe that mySQL needs to be configured further is because New Relic has shown that our SELECT queries are taking a long time (20,000+ ms) in some categories. I ran MySQLTuner 1.3.0 and got the following results... (Disclaimer: I restarted mySQL earlier after tweaking some settings, and so the results here may not be 100% accurate): >> MySQLTuner 1.3.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering [OK] Currently running supported MySQL version 5.5.37-35.0 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MRG_MYISAM [--] Data in MyISAM tables: 7G (Tables: 332) [--] Data in InnoDB tables: 213G (Tables: 8714) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [--] Data in MEMORY tables: 0B (Tables: 353) [!!] Total fragmented tables: 5492 -------- Security Recommendations ------------------------------------------- [!!] User '@host5.server1.autopartsnetwork.com' has no password set. [!!] User '@localhost' has no password set. [!!] User 'root@%' has no password set. -------- Performance Metrics ------------------------------------------------- [--] Up for: 5h 3m 4s (5M q [317.443 qps], 42K conn, TX: 18B, RX: 2B) [--] Reads / Writes: 95% / 5% [--] Total buffers: 35.5G global + 184.5M per thread (1024 max threads) [!!] Maximum possible memory usage: 220.0G (174% of installed RAM) [OK] Slow queries: 0% (6K/5M) [OK] Highest usage of available connections: 5% (61/1024) [OK] Key buffer size / total MyISAM indexes: 512.0M/3.1G [OK] Key buffer hit rate: 100.0% (102M cached / 45K reads) [OK] Query cache efficiency: 66.9% (3M cached / 5M selects) [!!] Query cache prunes per day: 3486361 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 812K sorts) [!!] Joins performed without indexes: 1328 [OK] Temporary tables created on disk: 11% (126K on disk / 1M total) [OK] Thread cache hit rate: 99% (61 created / 42K connections) [!!] Table cache hit rate: 19% (9K open / 49K opened) [OK] Open file limit used: 2% (712/25K) [OK] Table locks acquired immediately: 100% (5M immediate / 5M locks) [!!] InnoDB buffer pool / data size: 32.0G/213.4G [OK] InnoDB log waits: 0 -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increasing the query_cache size over 128M may reduce performance Adjust your join queries to always utilize indexes Increase table_cache gradually to avoid file descriptor limits Read this before increasing table_cache over 64: http://bit.ly/1mi7c4C Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 512M) [see warning above] join_buffer_size (> 128.0M, or always use indexes with joins) table_cache (> 12288) innodb_buffer_pool_size (>= 213G) My my.cnf configuration is as follows... [client] port = 3306 [mysqld_safe] nice = 0 [mysqld] tmpdir = /var/lib/mysql/tmp user = mysql port = 3306 skip-external-locking character-set-server = utf8 collation-server = utf8_general_ci event_scheduler = 0 key_buffer = 512M max_allowed_packet = 64M thread_stack = 512K thread_cache_size = 512 sort_buffer_size = 24M read_buffer_size = 8M read_rnd_buffer_size = 24M join_buffer_size = 128M # for some nightly processes client sessions set the join buffer to 8 GB auto-increment-increment = 1 auto-increment-offset = 1 myisam-recover = BACKUP max_connections = 1024 # max connect errors artificially high to support behaviors of NetScaler monitors max_connect_errors = 999999 concurrent_insert = 2 connect_timeout = 5 wait_timeout = 180 net_read_timeout = 120 net_write_timeout = 120 back_log = 128 # this table_open_cache might be too low because of MySQL bugs #16244691 and #65384) table_open_cache = 12288 tmp_table_size = 512M max_heap_table_size = 512M bulk_insert_buffer_size = 512M open-files-limit = 8192 open-files = 1024 query_cache_type = 1 # large query limit supports SOAP and REST API integrations query_cache_limit = 4M # larger than 512 MB query cache size is problematic; this is typically ~60% full query_cache_size = 512M # set to true on read slaves read_only = false slow_query_log_file = /var/log/mysql/slow.log slow_query_log = 0 long_query_time = 0.2 expire_logs_days = 10 max_binlog_size = 1024M binlog_cache_size = 32K sync_binlog = 0 # SSD RAID10 technically has a write capacity of 10000 IOPS innodb_io_capacity = 400 innodb_file_per_table innodb_table_locks = true innodb_lock_wait_timeout = 30 # These servers have 80 CPU threads; match 1:1 innodb_thread_concurrency = 48 innodb_commit_concurrency = 2 innodb_support_xa = true innodb_buffer_pool_size = 32G innodb_file_per_table innodb_flush_log_at_trx_commit = 1 innodb_log_buffer_size = 2G skip-federated [mysqldump] quick quote-names single-transaction max_allowed_packet = 64M I have a monster of a server here to power our site because our catalog is very large (300,000 simple SKUs), and I'm just wondering if I'm missing anything that I can configure further. :-) Thanks!

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• Safety concerns on allowing connections to MySQL with no password on localhost?

  - by ÉricO

  In the case of a Linux system, is there any security concern to let MySQL users with standard privileges (that is, not the root users) connect to the database with no password from localhost? I think that enforcing a password even for localhost can add a layer of protection, since, with no password the database access would be compromised if the SSH access is itself compromised. Considering that, would it be less safe to allow no password connection to MySQL than having the same password for SSH and for MySQL? I don't know if that is to be taken into account, but we also use phpMyAdmin to let users administrate their own database. I am asking because I kinda dislike having to put our database passwords unencrypted in the source or configuration files of our applications, where they can easily be leaked unintentionally. Since our servers are configured to run our applications as the Linux user the application belongs to, I was considering allowing no password from localhost as a simple solution. So, would that be a very bad idea or not?

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• After creating a mysql user with all privileges, the user cannot create databases in phpMyAdmin and only sees information_schema table

  - by GHarping

  This is a recurring problem for some reason... Using mysql 5.5, I am simply trying to create a user that can connect to the database remotely, have access to all databases, and create databases. I have created a user using: create user 'dev'@'%' identified by 'abcdefg'; then granted all permissions using: GRANT ALL ON *.* to 'dev'@'192.168.%' IDENTIFIED BY 'abcdefg' WITH GRANT OPTION; and the result is that the user cannot create databases, and can only see information_schema database for some reason. Databases Create database: Documentation No Privileges Database Ascending information_schema Total: 1 Does anyone know why this might be happening?

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• Best approach for Synchronization Mysql databases using C# [closed]

  - by nirmal90

  I have a requirement as below. Windows application in c# with MySQL database MySQL database in both local and server One centralized server with many client synchronizing the server database at each time when the new entry or update is happen in local machine The server data also needs to be updated in local at regular intervals in order to avoid conflicts I need to know what is the best approach to follow to make this synchronization without any conflicts.

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• Preventing users from deleting SQL data

  - by me2011

  We just purchased a program that requires the users to have an account in the MS SQL server, with read/write access to the program's database. My concern is that since these users will now have write access to the database, they could directly connect to the SQL server outside of the program's client and then mess with the data directly in the tables. Is there anyway I can prevent access to the database while still allowing access via the client program?

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• How setup federated SQL data to display limited information to a Web server in the DMZ?

  - by Pcav

  I have a SQL server behind a firewall. I need to push some limited SQL 2005 information to a Web Server in the DMZ so that I do not have to let database queries come all the way into the database server on our internal network. I want to push a small amount of dynamic data to a Web server in the DMZ and lock it down so that our hosted website does not need to come into the internal network for information; I want to put a server in the DMZ that will be the only connection allowed to the SQL database. This DMZ server will be the only server that can have any sort of connection to the back-end database so the hosting provider just pull the data from our server in the DMZ...

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• Access 2010 datasheet view only/relationships unavailable

  - by Luis

  I'm relatively new to MS Access in general and just started working with Access 2010. I've created a new web database with a few tables that I need to relate. First problem: For the life of me, I can't view anything in any view other than datasheet view; everywhere I would expect to be able to change the view, only datasheet view is available. Second problem: I can't change the primary key(s). Presumably I would be able to do this if I could get out of datasheet view and into design view. Third problem: The 'Relationships' button is greyed out. I know these appear to be really simple things but I've been looking for much more time than I'd like to admit trying to figure out how to get unstuck. Update: It would appear that this is happening because it is a 'web database' as I've been able to do all of the above in a new regular database. With this in mind let me ask a different question: Am I able to add relationships and change primary keys in a web database? If so how? More generally, what is the point of a web database?

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• Is it possible to use Excel's OLAP features with MySQL?

  - by sblom

  I want to create an OLAP database for use with Excel, and most of the data is already stored in a MySQL database. Is it possible to create an OLAP schema on a MySQL database, probably on the same server, that Excel can use for ad hoc OLAP interaction?

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• Which open source/free CMSs allow for staging content changes before putting live?

  - by elliot100

  I'm not sure that I've phrased the question all that well. What I'm really looking for is a feature of CMSs where content changes are made on a restricted access 'staging/preview' site, before being published to the live external site. The open source/free CMSs I've looked at so far (Textpattern, WordPress, Movable Type) don't seem to allow this, as far as I can see. Although they allow new content to be saved as draft/pending, viewable by users with appropriate privileges, this doesn't work with changes to existing content -- a post/page can't be live and also have a new version pending. (Do correct me if I'm wrong). I realise it should be possible to do this by making all changes on a staging site, and then replicating the contents of that database to a separate live site manually, but am looking for something a little more elegant. Edit: Just to clarify, both systems which involve synchronising a live database with a staging database systems which offer live/staging views of a single database would be of interest. Am sure I have seen both approaches in commercial/proprietary CMSs.

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