Using Open Source Database
Hi, Part of our road map is to use an open source database besides commercial databases (oracle and sql server), we need to select an open source database to build the necessary skills for administration and operation. Then we would put guidelines on which applications should use open source database and which to use Oracle. Then migrate these applications to the new open source database. Part of this exercise is a financial exercise on the savings resulting from this transformation (CAPEX OPEX). So do you have any pointers, case studies, and so on? Regards Sameh Attia -- - Failure is not an option; it is a built-in feature in Windows. - The two basic principles of system administration: * For minor problems, reboot * For major problems, reinstall dc -e '603178305900664311156641389051003470569569613466992253686426210705237258P'
Re: Fail to change MySQL data directory on ubuntu
2009/8/26 chen jia chen.1...@gmail.com Hi there, I am using MySQL on ubuntu 8.04. I followed this link http://www.ubuntu-howto.info/howto/how-to-move-mysql-databases-to-another-location-partition-or-hard-drive to change the data directory of MySQL. After stopping MySQL: sudo /etc/init.d/mysql stop I make a new directory: sudo mkdir /media/disk/MySQL_data then change the ownership of new directory, sudo chown mysql:mysql /media/disk/MySQL_data and copy all data to the new directory, cp -r -p /var/lib/mysql/* /media/disk/MySQL_data/ and deleted all files like ibdata1, Chen, Did you really delete ibdata1 ? ib_logfile0, and ib_logfile1. I then edit /etc/mysql/my.conf and update the datadir to my new directory. I also update /etc/apparmor.d/usr.sbin.mysql so that news lines with /var/lib/mysql replaced by /media/disk/MySQL_data are added. However, after sudo /etc/init.d/apparmor reload I try sudo /etc/init.d/mysql start I got * Starting MySQL database server mysqld [fail] If I change the datadir line in /etc/mysql/my.conf back to the original one, I can start MySQL successfully. I think I have done everything needed to change MySQL data directory. Why am I still getting this error? Where can I start to look for the causes? Thanks. Jia -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com
XAMMP and Mysql error
Hi, From yesterday 2009-08-26 i have an error message when my computer start. The mysqld.exe crash blablabla I search on g**gle 006B8853mysqld.exe and i find somebody in this mailing with this problem!! I don't change anything in my mysql config file, cause i didn't use mysql during the last month. I make some tests : 1- I lanch the mysql service --- ERROR the service command launched : C:\Program Files\Quiz\mysql\bin\mysqld --defaults-file=C:\Program Files\Quiz\mysql\bin\my.cnf mysql The files mysqld and my.cnf are used bellow so the 2 files work fine. 2- I lanch the mysql in console : mysql\bin\mysqld --defaults-file=mysql\bin\my.cnf --standalone --console --- OK I have the following version : MySQL 5.1.30 (Community Server) Here the err file : 090827 10:26:54 - mysqld got exception 0xc005 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=262144 max_used_connections=0 max_threads=151 threads_connected=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 133305 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... 006B8853mysqld.exe!??? The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. Thanks for any help. -- Regards. Gabriel TESSIER LOGOSAPIENCE 3, Rue Pierre et Marie CURIE 49070 ST JEAN DE LINIERES +33 (0)2.41.36.81.41 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Using Open Source Database
On Thursday 27 August 2009 03:35:19 am Sameh Attia wrote: Hi, Part of our road map is to use an open source database besides commercial databases (oracle and sql server), we need to select an open source database to build the necessary skills fo I know this is a mysql mailing list, but I strongly encourage having a good look at Postgresql. In my opinion, it is better suited for a commercial database environment than mysql. If you are curious, join the Postgresql general mailing list and watch the traffic for a couple days, see what others are using it for. Colin -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Viable alternatives to SQL?
Many sites let you search databases of information, but the search queries are very limited. I'm creating a site that'll allow arbitrary SQL queries to my data (I realize I'll need to handle injection attacks). Are there other viable ways to query data? I read a little on Business System 12 (BS12), Tutorial D, and even something called T-SQL (I think), but they all seem theoretical and not fully implemented. I want a query language that non-techies can use easily, but also supports arbitrarily complex queries. Does such a language exist? -- We're just a Bunch Of Regular Guys, a collective group that's trying to understand and assimilate technology. We feel that resistance to new ideas and technology is unwise and ultimately futile. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Viable alternatives to SQL?
Kelly Jones wrote: Many sites let you search databases of information, but the search queries are very limited. I'm creating a site that'll allow arbitrary SQL queries to my data (I realize I'll need to handle injection attacks). Are there other viable ways to query data? I read a little on Business System 12 (BS12), Tutorial D, and even something called T-SQL (I think), but they all seem theoretical and not fully implemented. T-SQL stands for Transact-SQL, which is Microsoft's implementation of SQL I want a query language that non-techies can use easily, but also supports arbitrarily complex queries. Does such a language exist? http://en.wikipedia.org/wiki/SQL#Alternatives_to_SQL -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Fail to change MySQL data directory on ubuntu
Chen, Did you really delete ibdata1 ? Yes, I did. Best, Jia Claudio Nanni wrote: 2009/8/26 chen jia chen.1...@gmail.com mailto:chen.1...@gmail.com Hi there, I am using MySQL on ubuntu 8.04. I followed this link http://www.ubuntu-howto.info/howto/how-to-move-mysql-databases-to-another-location-partition-or-hard-drive to change the data directory of MySQL. After stopping MySQL: sudo /etc/init.d/mysql stop I make a new directory: sudo mkdir /media/disk/MySQL_data then change the ownership of new directory, sudo chown mysql:mysql /media/disk/MySQL_data and copy all data to the new directory, cp -r -p /var/lib/mysql/* /media/disk/MySQL_data/ and deleted all files like ibdata1, Chen, Did you really delete ibdata1 ? ib_logfile0, and ib_logfile1. I then edit /etc/mysql/my.conf and update the datadir to my new directory. I also update /etc/apparmor.d/usr.sbin.mysql so that news lines with /var/lib/mysql replaced by /media/disk/MySQL_data are added. However, after sudo /etc/init.d/apparmor reload I try sudo /etc/init.d/mysql start I got * Starting MySQL database server mysqld [fail] If I change the datadir line in /etc/mysql/my.conf back to the original one, I can start MySQL successfully. I think I have done everything needed to change MySQL data directory. Why am I still getting this error? Where can I start to look for the causes? Thanks. Jia -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
RE: Viable alternatives to SQL?
-Original Message- From: Kelly Jones [mailto:kelly.terry.jo...@gmail.com] Sent: Thursday, August 27, 2009 9:44 AM To: mysql@lists.mysql.com Subject: Viable alternatives to SQL? Many sites let you search databases of information, but the search queries are very limited. I'm creating a site that'll allow arbitrary SQL queries to my data (I realize I'll need to handle injection attacks). [JS] Taking you literally, wouldn't that presume that your users have knowledge of the underlying database structure? If not, then I think you'll need to go with fill in the blanks type of query form. Regards, Jerry Schwartz The Infoshop by Global Information Incorporated 195 Farmington Ave. Farmington, CT 06032 860.674.8796 / FAX: 860.674.8341 www.the-infoshop.com Are there other viable ways to query data? I read a little on Business System 12 (BS12), Tutorial D, and even something called T-SQL (I think), but they all seem theoretical and not fully implemented. I want a query language that non-techies can use easily, but also supports arbitrarily complex queries. Does such a language exist? -- We're just a Bunch Of Regular Guys, a collective group that's trying to understand and assimilate technology. We feel that resistance to new ideas and technology is unwise and ultimately futile. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=jschwa...@the- infoshop.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
RE: Viable alternatives to SQL?
Isn't that basically the same as pointing phpmyadmin at a read-only copy of the data? There's a reason most searches are limited; when you most people too many options, it's confusing. Good interfaces hide complexity from the end user. -Original Message- From: Jerry Schwartz [mailto:jschwa...@the-infoshop.com] Sent: Thursday, August 27, 2009 8:08 AM To: 'Kelly Jones'; mysql@lists.mysql.com Subject: RE: Viable alternatives to SQL? -Original Message- From: Kelly Jones [mailto:kelly.terry.jo...@gmail.com] Sent: Thursday, August 27, 2009 9:44 AM To: mysql@lists.mysql.com Subject: Viable alternatives to SQL? Many sites let you search databases of information, but the search queries are very limited. I'm creating a site that'll allow arbitrary SQL queries to my data (I realize I'll need to handle injection attacks). [JS] Taking you literally, wouldn't that presume that your users have knowledge of the underlying database structure? If not, then I think you'll need to go with fill in the blanks type of query form. Regards, Jerry Schwartz The Infoshop by Global Information Incorporated 195 Farmington Ave. Farmington, CT 06032 860.674.8796 / FAX: 860.674.8341 www.the-infoshop.com Are there other viable ways to query data? I read a little on Business System 12 (BS12), Tutorial D, and even something called T-SQL (I think), but they all seem theoretical and not fully implemented. I want a query language that non-techies can use easily, but also supports arbitrarily complex queries. Does such a language exist? -- We're just a Bunch Of Regular Guys, a collective group that's trying to understand and assimilate technology. We feel that resistance to new ideas and technology is unwise and ultimately futile. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=jschwa...@the- infoshop.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=gto...@ffn.com The information contained in this transmission may contain privileged and confidential information. It is intended only for the use of the person(s) named above. If you are not the intended recipient, you are hereby notified that any review, dissemination, distribution or duplication of this communication is strictly prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Fail to change MySQL data directory on ubuntu
That procedure is horribly incorrect. You should simply move the ib_log and ibdata files with the rest of the datadir. The ibdata1 file contains innodb's system tables and depending on your setting of innodb_file_per_table it also contains your data! On Thu, Aug 27, 2009 at 7:56 AM, Jia Chenchen.1...@gmail.com wrote: Chen, Did you really delete ibdata1 ? Yes, I did. Best, Jia Claudio Nanni wrote: 2009/8/26 chen jia chen.1...@gmail.com mailto:chen.1...@gmail.com Hi there, I am using MySQL on ubuntu 8.04. I followed this link http://www.ubuntu-howto.info/howto/how-to-move-mysql-databases-to-another-location-partition-or-hard-drive to change the data directory of MySQL. After stopping MySQL: sudo /etc/init.d/mysql stop I make a new directory: sudo mkdir /media/disk/MySQL_data then change the ownership of new directory, sudo chown mysql:mysql /media/disk/MySQL_data and copy all data to the new directory, cp -r -p /var/lib/mysql/* /media/disk/MySQL_data/ and deleted all files like ibdata1, Chen, Did you really delete ibdata1 ? ib_logfile0, and ib_logfile1. I then edit /etc/mysql/my.conf and update the datadir to my new directory. I also update /etc/apparmor.d/usr.sbin.mysql so that news lines with /var/lib/mysql replaced by /media/disk/MySQL_data are added. However, after sudo /etc/init.d/apparmor reload I try sudo /etc/init.d/mysql start I got * Starting MySQL database server mysqld [fail] If I change the datadir line in /etc/mysql/my.conf back to the original one, I can start MySQL successfully. I think I have done everything needed to change MySQL data directory. Why am I still getting this error? Where can I start to look for the causes? Thanks. Jia -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=eric.ber...@gmail.com -- Eric Bergen eric.ber...@gmail.com http://www.ebergen.net -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Fail to change MySQL data directory on ubuntu
Thanks for the tips. Where can I find more details about the ibdata file? After I changed the data dir, hese file did get recreated. So far, I have not noticed any data loss yet. Best, Jia Eric Bergen wrote: That procedure is horribly incorrect. You should simply move the ib_log and ibdata files with the rest of the datadir. The ibdata1 file contains innodb's system tables and depending on your setting of innodb_file_per_table it also contains your data! On Thu, Aug 27, 2009 at 7:56 AM, Jia Chenchen.1...@gmail.com wrote: Chen, Did you really delete ibdata1 ? Yes, I did. Best, Jia Claudio Nanni wrote: 2009/8/26 chen jia chen.1...@gmail.com mailto:chen.1...@gmail.com Hi there, I am using MySQL on ubuntu 8.04. I followed this link http://www.ubuntu-howto.info/howto/how-to-move-mysql-databases-to-another-location-partition-or-hard-drive to change the data directory of MySQL. After stopping MySQL: sudo /etc/init.d/mysql stop I make a new directory: sudo mkdir /media/disk/MySQL_data then change the ownership of new directory, sudo chown mysql:mysql /media/disk/MySQL_data and copy all data to the new directory, cp -r -p /var/lib/mysql/* /media/disk/MySQL_data/ and deleted all files like ibdata1, Chen, Did you really delete ibdata1 ? ib_logfile0, and ib_logfile1. I then edit /etc/mysql/my.conf and update the datadir to my new directory. I also update /etc/apparmor.d/usr.sbin.mysql so that news lines with /var/lib/mysql replaced by /media/disk/MySQL_data are added. However, after sudo /etc/init.d/apparmor reload I try sudo /etc/init.d/mysql start I got * Starting MySQL database server mysqld [fail] If I change the datadir line in /etc/mysql/my.conf back to the original one, I can start MySQL successfully. I think I have done everything needed to change MySQL data directory. Why am I still getting this error? Where can I start to look for the causes? Thanks. Jia -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=eric.ber...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Getting mySQL to ignore case sensitivity of field names
Hi, Google isn't my friend :-( How can I tell mySQL 5.0 to ignore the case of field names i.e. FullName should also be able to be referenced as fullname,fullNAME etc ? I'm running it on a linux box at home but my copy at work (running on Windows 2000 server) has this by default - I certainly set any options. When I Google all I seem to get are hits about ignoring case in select query values not field names. Many thanks Adrian -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Getting mySQL to ignore case sensitivity of field names
http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html You need to set the field format to a non binary one, and case insensitive will be the default. On Aug 27, 2009, at 2:57 PM, Adrian Aitken wrote: Hi, Google isn't my friend :-( How can I tell mySQL 5.0 to ignore the case of field names i.e. FullName should also be able to be referenced as fullname,fullNAME etc ? I'm running it on a linux box at home but my copy at work (running on Windows 2000 server) has this by default - I certainly set any options. When I Google all I seem to get are hits about ignoring case in select query values not field names. -- Scott * If you contact me off list replace talklists@ with scott@ * -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Getting mySQL to ignore case sensitivity of field names
Hi Scott, it's not the values I have a problem with, it's the fieldnames themselves. As an example the mysql.user table has 'Host' but when I do an update setting 'host' to a value it fails to update. I have to enter 'Host'. The mysql.com link seems to only talk about field values. Regards Adrian - Original Message - From: Scott Haneda To: Adrian Aitken Cc: mysql@lists.mysql.com Sent: Thursday, August 27, 2009 11:04 PM Subject: Re: Getting mySQL to ignore case sensitivity of field names http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html You need to set the field format to a non binary one, and case insensitive will be the default. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Getting mySQL to ignore case sensitivity of field names
Oops, sorry about that. My understanding is this is OS dependent: http://dev.mysql.com/doc/refman/5.0/en/identifier-case-sensitivity.html You may be able to set lowercase tables names, but would always have to use lowercase. I would just stick to entering in the correct case, as the other methods seem prone to trouble. On Aug 27, 2009, at 3:04 PM, Scott Haneda wrote: http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html You need to set the field format to a non binary one, and case insensitive will be the default. On Aug 27, 2009, at 2:57 PM, Adrian Aitken wrote: Hi, Google isn't my friend :-( How can I tell mySQL 5.0 to ignore the case of field names i.e. FullName should also be able to be referenced as fullname,fullNAME etc ? I'm running it on a linux box at home but my copy at work (running on Windows 2000 server) has this by default - I certainly set any options. When I Google all I seem to get are hits about ignoring case in select query values not field names. -- Scott * If you contact me off list replace talklists@ with scott@ * -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Getting mySQL to ignore case sensitivity of field names
On Aug 27, 2009, at 5:11 PM, Adrian Aitken wrote: Hi Scott, it's not the values I have a problem with, it's the fieldnames themselves. As an example the mysql.user table has 'Host' but when I do an update setting 'host' to a value it fails to update. I have to enter 'Host'. The mysql.com link seems to only talk about field values. That should not happen. Column names are not case sensitive in MySQL. http://dev.mysql.com/doc/refman/5.0/en/identifier-case-sensitivity.html: Column, index, and stored routine names are not case sensitive on any platform, nor are column aliases. Can we see your query? Regards Adrian - Original Message - From: Scott Haneda To: Adrian Aitken Cc: mysql@lists.mysql.com Sent: Thursday, August 27, 2009 11:04 PM Subject: Re: Getting mySQL to ignore case sensitivity of field names http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html You need to set the field format to a non binary one, and case insensitive will be the default. -- Paul DuBois Sun Microsystems / MySQL Documentation Team Madison, Wisconsin, USA www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
