Upgrading MySQL from 5.0 to 5.1
See Thread at: http://www.techienuggets.com/Detail?tx=78654 Posted on behalf of a User This has proved to be quite challenging. I wasn't able to do the upgrade and basically created another instance of 5.1 and took a backup of my database from 5.0 and restored it to 5.1. Then added all my users, etc. There's got to be a better way? I couldn't figure out how to get the new version 5.1 to see the file system (containing the database) that was in use by 5.0. I looked at all the documents and nowhere (or at least I couldn't see it) does it talk about upgrading the database. When you install the new version how do you get it ot upgrade and use the 5.0 database? Any pointers/help on this would be great for the next time I have to do this. Thanks. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: copy blob between tables may get in consistent data?
See Thread at: http://www.techienuggets.com/Detail?tx=78262 Posted on behalf of a User I have no problems in copying MEDIUMBLOB type data from one table to another. Under either 5.0 or 5.1 community editions. In Response To: hi, I found this: http://bugs.mysql.com/bug.php?id=34300 in the bug system. As it descibed, there is chance which I get corrupted data when read BLOB. Now I wonder why I also get corrupted data when write BLOB into table... I tried this: step 1: read BLOB data from TABLE1 step 2: log the BLOB data step 3: write the data into TABLE2 result: select hex(data) from TABLE1 is the same as what I've logged in step2 select hex(data) from TABLE2 is different with select hex(data) from TABLE2 Any suggestions? 2009/3/19 Cui Shijun no...@spam.com: hi,  I'm using mysql-5.1.22, innodb. For some reason, I need to add some columns to a table without locking it, so I do this:   insert into TABLE2(col1, col2, ... ,colN) select col1, col2, ... colN from TABLE1 where ...(primary key traversal condition).  which TABLE1 is under use, and TABLE2 has new structure.  Before I really do the copy task, I created some triggers to synchronize the insert update.  When I finally complete the task, I find ALL blob column appear to result in inconsistent status with the orignal table.  There are users which do query and update on TABLE1.  So what's going wrong?  Thank you    Cui Shijun -- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Replication error 1236
See Thread at: http://www.techienuggets.com/Detail?tx=46643 Posted on behalf of a User HI, first check the error log and find the position where the replication was terminated.Now run the mysqlbinlog utility on the binarylogs file. Now when you run the query will get the text format as a result.serch for the position and see as to which query was ran on that position.check if that qurey ran on the slave before bcoz we dont need a duplication of thr query.If not plz run the query on the slave.Stop/start the slave.You sholud get the Slave back to SYNC. Anup In Response To: Hi All, Once a week or so I get the following error: 080801 8:18:35 [ERROR] Error reading packet from server: error reading log entry ( server_errno=1236) 080801 8:18:35 [ERROR] Got fatal error 1236: 'error reading log entry' from master when reading data from binary log Stopping the slave and restart at its current postion does not help here (the same error happens again with next entry in bin log), the only way I know how to fix this is to flush the logs and restart the slave with the new log file (changes in between are manually synched). I would appreciate any pointers about where to start looking for the problem. E.g. is the bin log file corrupt? And if so why does this happen so often Thanks Olaf - Confidentiality Notice: The following mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. The recipient is responsible to maintain the confidentiality of this information and to use the information only for authorized purposes. If you are not the intended recipient (or authorized to receive information for the intended recipient), you are hereby notified that any review, use, disclosure, distribution, copying, printing, or action taken in reliance on the contents of this e-mail is strictly prohibited. If you have received this communication in error, please notify us immediately by reply e-mail and destroy all copies of the original message. Thank you. -- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Typical Maintenance for InnoDB Tables
See Thread at: http://www.techienuggets.com/Detail?tx=48414 Posted on behalf of a User I have a MySQL 5.0 InnoDB database that's about 1 GB in size so it's still pretty tiny. Is there any performance enhancement maintenance that should be done on the tables? I do a weekly Optimize through the MySQL Admin tool, which doesn't appear to do anything, I presume it updates the table statistics. Is there anything else that I should do with the indexes for instance? Thanks for any information. John T. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Moving Database from Windows to Linux
See Thread at: http://www.techienuggets.com/Detail?tx=42035 Posted on behalf of a User Hi, I'm running MySQL 5.0.51 Community edition. I have a half a gigabyte sized database that I'd like to move from a Windows 2000 based server to a Linux server. What's the best way to do this? I normally take complete backup using MySQL administrator which creates a file with sql to recreate the tables and insert the data. Can I simply ftp this to the Linux box and restore it to a database there? Is there a MySQL administrator for Linux? Thanks -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Moving Database from Windows to Linux
See Thread at: http://www.techienuggets.com/Detail?tx=42035 Posted on behalf of a User Because of the fundamental difference between binary data files under Windows and under Linux. In Response To: At 07:09 PM 6/26/2008, you wrote: See Thread at: http://www.techienuggets.com/Detail?tx=42035 Posted on behalf of a User Hi, I'm running MySQL 5.0.51 Community edition. I have a half a gigabyte sized database that I'd like to move from a Windows 2000 based server to a Linux server. What's the best way to do this? I normally take complete backup using MySQL administrator which creates a file with sql to recreate the tables and insert the data. Can I simply ftp this to the Linux box and restore it to a database there? Is there a MySQL administrator for Linux? Thanks Why can't you just shutdown the MySQL server and copy the data files to the data directory on the Linux server? Mike -- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
A SQL Query Question
See Thread at: http://www.techienuggets.com/Detail?tx=32975 Posted on behalf of a User Hello everyone, I have a table A: userId long picture MeduimBlob datePosted DateTime A userId can have many pictures posted. I want to write a query that returns a distinct userId along with the most recent picture posted. Can someone suggest an elegant and fast query to accomplish this? Thanks Adam -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: A SQL Query Question
See Thread at: http://www.techienuggets.com/Detail?tx=32975 Posted on behalf of a User select userId, picture, MAX(datePosted) from A order by datePosted; In Response To: Hello everyone, I have a table A: userId long picture MeduimBlob datePosted DateTime A userId can have many pictures posted. I want to write a query that returns a distinct userId along with the most recent picture posted. Can someone suggest an elegant and fast query to accomplish this? Thanks Adam -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Server Crash
See Thread at: http://www.techienuggets.com/Detail?tx=24273 Posted on behalf of a User Hi I'm running 5.0.51a on Windows machine. The server crashes with: 080210 15:56:38 InnoDB: Page checksum 2545965801, prior-to-4.0.14-form checksum 1667729874 InnoDB: stored checksum 1195984440, prior-to-4.0.14-form stored checksum 1416128883 InnoDB: Page lsn 4294918911 4294967295, low 4 bytes of lsn at page end 541878627 InnoDB: Page number (if stored to page already) 962664704, InnoDB: space id (if created with = MySQL-4.1.1 and stored already) 4294967295 InnoDB: Database page corruption on disk or a failed InnoDB: file read of page 13178. InnoDB: You may have to recover from a backup. InnoDB: It is also possible that your operating InnoDB: system has corrupted its own file cache InnoDB: and rebooting your computer removes the InnoDB: error. InnoDB: If the corrupt page is an index page InnoDB: you can also try to fix the corruption InnoDB: by dumping, dropping, and reimporting InnoDB: the corrupt table. You can use CHECK InnoDB: TABLE to scan your table for corruption. InnoDB: See also InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: about forcing recovery. InnoDB: Ending processing because of a corrupt database page. When I do a error check. I have full backups but when I restore the backup to the original schema name I get the same problem but when I restore to a new schema name the server works fine. I have change my programs to use the new schema name but I don't understand what's causing this problem? I can even delete the original schema name and restore the backup but it still fails. Thanks -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Server Crash
See Thread at: http://www.techienuggets.com/Detail?tx=24273 Posted on behalf of a User Help! I'm still facing this problem. I can run a check error successfully but when I try to dump the database using MySQL Administrator halfway through one table the server crashes. See message at the end. I restart the server run a check error and everything checks out but it crashes again when I try and do a backup. I'm using Innodb and my problems appear to have started when I upgraded from 5.0.45 to 5.0.51a. I'm not the normal Mysql admin, who's currently not available. Please any help would be great. InnoDB: stored checksum 4292411360, prior-to-4.0.14-form stored checksum 544367987 InnoDB: Page lsn 6553600 4293656593, low 4 bytes of lsn at page end 1869967971 InnoDB: Page number (if stored to page already) 1067590, InnoDB: space id (if created with = MySQL-4.1.1 and stored already) 19200 InnoDB: Database page corruption on disk or a failed InnoDB: file read of page 13375. InnoDB: You may have to recover from a backup. InnoDB: It is also possible that your operating InnoDB: system has corrupted its own file cache InnoDB: and rebooting your computer removes the InnoDB: error. InnoDB: If the corrupt page is an index page InnoDB: you can also try to fix the corruption InnoDB: by dumping, dropping, and reimporting InnoDB: the corrupt table. You can use CHECK InnoDB: TABLE to scan your table for corruption. InnoDB: See also InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: about forcing recovery. InnoDB: Ending processing because of a corrupt database page. In Response To: Hi I'm running 5.0.51a on Windows machine. The server crashes with: 080210 15:56:38 InnoDB: Page checksum 2545965801, prior-to-4.0.14-form checksum 1667729874 InnoDB: stored checksum 1195984440, prior-to-4.0.14-form stored checksum 1416128883 InnoDB: Page lsn 4294918911 4294967295, low 4 bytes of lsn at page end 541878627 InnoDB: Page number (if stored to page already) 962664704, InnoDB: space id (if created with = MySQL-4.1.1 and stored already) 4294967295 InnoDB: Database page corruption on disk or a failed InnoDB: file read of page 13178. InnoDB: You may have to recover from a backup. InnoDB: It is also possible that your operating InnoDB: system has corrupted its own file cache InnoDB: and rebooting your computer removes the InnoDB: error. InnoDB: If the corrupt page is an index page InnoDB: you can also try to fix the corruption InnoDB: by dumping, dropping, and reimporting InnoDB: the corrupt table. You can use CHECK InnoDB: TABLE to scan your table for corruption. InnoDB: See also InnoDB: http://dev.mysql.com/doc/refman/5.0/en/forcing-recovery.html InnoDB: about forcing recovery. InnoDB: Ending processing because of a corrupt database page. When I do a error check. I have full backups but when I restore the backup to the original schema name I get the same problem but when I restore to a new schema name the server works fine. I have change my programs to use the new schema name but I don't understand what's causing this problem? I can even delete the original schema name and restore the backup but it still fails. Thanks -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
