MySQL Forums
Forum List  »  Newbie

mysql lost connection only when delete from
Posted by: Yuxi Chen
Date: July 24, 2015 01:11PM

Hi all,

I am running a real old version of mysql(3.23.56) for my research. Everything is good, expect when I want to delete all entries of a table. I have checked query, like drop, select,update, their behaviours are correct. Even I use sql like "delete from t1 where id='5' ", I can get the right answer. But for "delete from t1"(which would delete all entries in table t1), it shows ERROR 2013 at line 1: Lost connection to mysql server during query. And mysqld restarted. Even this table has only 1 entry!

I checked the error log. It shows:

Number of processes running now: 0
Fri Jul 24 13:31:00 CDT 2015
150724 13:31:10 mysqld started
/home/chenyuxi/Desktop/bugs/mysql_169/mysql-build/libexec/mysqld: ready for connections
mysqld got signal 11;
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

It is possible that mysqld could use up to
key_buffer_size + (record_buffer + sort_buffer)*max_connections = 225791 K
bytes of memory
Hope that's ok, if not, decrease some variables in the equation

I try to change global variable max_allowed_packet and net_read_timeout, it seems useless.

Any suggestions? Really urgent for me .


Options: ReplyQuote

Written By
mysql lost connection only when delete from
July 24, 2015 01:11PM

Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.