Error 2020 Mysql
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Max Allowed Packet Size In Mysql
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Mariadb Max_allowed_packet
'max_allowed_packet' bytes when dumping table up vote 4 down vote favorite 1 I'm getting the above mentioned error when backing up with ZRM, which is using mysqldump for backup. mysqldump --opt --extended-insert --single-transaction --create-options --default-character-set=utf8 --user=" " -p --all-databases > "/nfs/backup/mysql01/dailyrun/20091216043001/backup.sql" mysqldump: Error 2020: Got packet bigger than 'max_allowed_packet' bytes when dumping table TICKET_ATTACHMENT at row: 2286 I have increased the size for 'max_allowed_packet' to be 1G in /etc/my.cnf which is the server setting mysqldump: got errno 28 on write and for the client side setting I've set it by running this command: mysql -u -p --max_allowed_packet=1G And I have verified that on the client and server side they are of the same value. This is to check the client side value according to this forum posting http://forums.mysql.com/read.php?35,75794,261640 mysql> SELECT @@MAX_ALLOWED_PACKET -> ; +----------------------+ | @@MAX_ALLOWED_PACKET | +----------------------+ | 1073741824 | +----------------------+ 1 row in set (0.00 sec) And this is the check the server value setting. mysql> SHOW VARIABLES | max_allowed_packet | > 1073741824 | I have ran out of ideas, and tried searching within expert exchange and googling for solutions but so far none has worked. Reference http://dev.mysql.com/doc/refman/5.1/en/packet-too-large.html Anyone please advise, thank you. mysql share|improve this question asked Jan 14 '10 at 7:37 Imagineer 155416 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote accepted That's not 'alternatively'. mysqldump is notorious for ignoring this value in my.cnf, but setting it as the command line parameter always works. share|improve this answer answered Apr 13 '10 at 21:43 Shr Usually people edit the wrong .my.cnf file or forget to add the option to [mysqldump] part and put it only in [mysqld] or [client], that is why mysqldump "doesn't read the .my.cnf" –higuita Jan 17 '14 at 12:05 add a comment| up
Issues 5,018 Merge Requests 391 Snippets Network Create a new issue Builds Commits Issue Boards Closed Open Issue #3664 opened 2015-11-25 10:15:13 UTC by Patrick Naumann@baarthor1 8.2.0
Mysqldump Quick
mysqldump: Error 2020: Got packet bigger than ‘max_allowed_packet’ During the backup the man mysqldump error mysqldump: Error 2020: Got packet bigger than ‘max_allowed_packet’ appears. No backup could be done. During the backup the mysql server has gone away error `mysqldump: Error 2020: Got packet bigger than ‘max_allowed_packet’ ` appears. No backup could be done. Edited 2015-12-14 08:35:52 UTC 0 0 Hannes Rosenögger @haynes commented 2015-11-25 http://serverfault.com/questions/102564/error-2020-got-packet-bigger-than-max-allowed-packet-bytes-when-dumping-table 10:25:15 UTC Master This is not a gitlab bug, but rather a default limitation of mysql. It can happen when your tables are very big. The default max_allowed_packet size is 25M, and you can adjust it for good within your my.cnf by setting the variable in a section for mysqldump: [mysqldump] max_allowed_packet = 500M Hannes Rosenögger @haynes 2015-11-25 10:25:15 UTC Status changed https://gitlab.com/gitlab-org/gitlab-ce/issues/3664 to closed Patrick Naumann @baarthor1 2015-11-25 11:07:23 UTC Status changed to reopened Patrick Naumann @baarthor1 commented 2015-11-25 11:09:11 UTC configuration is set to the following: [mysqldump] max_allowed_packet = 2G rake script only calls mysqldump, during this command there is a possibility to add parameters for enlarging. Edited 2015-11-25 11:09:26 UTC Hannes Rosenögger @haynes commented 2015-11-25 11:11:52 UTC Master @baarthor1 sure it is. But we don't know what parameters are necessary for your specific installation. Does something speak against simply using the config in my.cnf? Patrick Naumann @baarthor1 commented 2015-11-25 11:13:58 UTC @haynes as written the configuration in my.cnf is set to 2G. In normal its ok for me to configure this in my.cnf, but it doesn´t work. Hannes Rosenögger @haynes commented 2015-11-25 11:51:27 UTC Master @baarthor1 That's weird.... Can you try adding the option to: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/backup/database.rb#L69 and tests if it works then? Patrick Naumann @baarthor1 commented 2015-11-25 12:45:25 UTC added this in this way: 'max_allowed_packet' => '--max_allowed_packet=2048M' but still the same error. Is this added correct? Hannes Rosenögger @haynes commented 2015-11-25 14:01:25 UTC Master That should be correct... @dblessing @stanhu
October 11, 2007 By Major Hayden 7 Comments When you dump table data from MySQL, you may end up pulling a error 2020 large chunk of data and it may exceed the MySQL client's max_allowed_packet variable. If that happens, you might catch an error like this: mysqldump: Error 2020: Got packet error 2020 mysql bigger than 'max_allowed_packet' bytes when dumping table tablename at row: 1627 The default max_allowed_packet size is 25M, and you can adjust it for good within your my.cnf by setting the variable in a section for mysqldump: [mysqldump]
max_allowed_packet = 500M Share this post:TwitterGoogleLinkedInRedditEmailPrintTagged With: database, mysql Send to Email Address Your Name Your Email Address Cancel Post was not sent - check your email addresses! Email check failed, please try again Sorry, your blog cannot share posts by email.
Cabral (Candidate Quality Contributor) Email Updates: Status: Verified Impact on me: None Category:MySQL Server: mysqldump Command-line Client Severity:S4 (Feature request) Version:5.1.63 OS:Linux Assigned to: View Add Comment Files Developer Edit Submission View Progress Log Contributions [1 Nov 2012 13:13] Sheeri Cabral Description: We are having a problem with max_allowed_packet: mysql> SELECT arg FROM ts_job WHERE jobid=83415224; ERROR 2020 (HY000): Got packet bigger than 'max_allowed_packet' bytes OK, let's see what max_allowed_packet is: mysql> SELECT @@max_allowed_packet, length(arg), @@max_allowed_packet-length(arg) as difference FROM ts_job WHERE jobid=83415224; +----------------------+-------------+------------+ | @@max_allowed_packet | length(arg) | difference | +----------------------+-------------+------------+ | 134217728 | 28253199 | 105964529 | +----------------------+-------------+------------+ 1 row in set (0.01 sec) So max_allowed_packet is 128M, we're trying to get a field with a length of <30M. Maybe it's a charset issue? mysql> \P grep arg PAGER set to 'grep arg' mysql> show create table ts_job; `arg` longblob, Not a charset issue, because it's a LONGBLOB, and those have no charset. Interestingly, mysqldump works just fine, with a 32M max_allowed_packet size set: # mysqldump bugs ts_job --where " jobid=83415224" > bigarg.sql # ls -lh bigarg.sql -rw-r--r-- 1 root root 29M Nov 1 06:05 bigarg.sql [root@tp-bugs01-slave01 ~]# mysqldump --help | grep packet --max_allowed_packet=# The maximum packet length to send to or receive from max_allowed_packet 33554432 and this is defined in /etc/my.cnf: [mysqldump] quick max_allowed_packet=32M (and there's no .my.cnf, etc) And obviously the data got IN somehow, via a web application, but the same web application can't get the data OUT (which is how we found the issue, because the web application was giving errors). How to repeat: Don't know if it's repeatable but you can try making a table, inserting data, and trying to get it out. Suggested fix: Make it so that we can retrieve the data. [1 Nov 2012 13:59] Jesper Hansen Thought I would add my findings here as well: * mysqldump uses SELECT INTO OUTFILE meaning it completely ignores 'max_allowed_packet' hence mysqldump cannot be used as a reference for "somethi