Luke Vanderfluit <[EMAIL PROTECTED]> wrote on 03/22/2006 08:29:02 PM:
> Hi. > > I've got mysql 4.0.18 installed on a sun X4100 running solaris. > This is just a 32 bit version of mysql. > > I've reverted back to this version after trying mysql 5, 4.0.26 and > 4.0.18 64bit. > Those versions were all unstable on 64bit, that is, the server would > just go away for no apparent reason. > This would ofter rear it's head when importing a dump file, the dump > file I need to import is around 10 GIG, but also at other unpredictable > times. > > I have this same database running on another machine running solaris, > with no problems, except speed/performance. > This other machine is the one that produces the dump file I'm trying to > import. > It does that with the following command: > > /usr/local/bin/mysqldump --opt --complete-insert > --max_allowed_packet=32M rt3 | bzip2 -9 > rt3.out-`date +\%Y\%m\%d-\%H`.bz2 > > I'm trying to restore the file on the new machine and I'm getting a > 'max_allowed_packet' error: > ERROR 1153 at line 162: Got a packet bigger than 'max_allowed_packet > > I've tried different settings for this in my.cnf, from 32 up to 1024M, > and I still get the error. > > Is there anything I can do to remedy this? > > Kind regards. > > > -- > Luke > Not exactly sure if this has changed in a recent version but I believe that the MySQL protocol only allows for packets up to 16M. That has to do with the size of the part of the packet that handles that value. Yep, here it is: http://dev.mysql.com/doc/internals/en/the-packet-header.html >>>>>>>>>>>>>> 7.4. The Packet Header Bytes Name ----- ---- 3 Packet Length 1 Packet Number Packet Length: The length, in bytes, of the packet that follows the Packet Header. There may be some special values in the most significant byte. Since 2**24 = 16MB, the maximum packet length is 16MB. <<<<<<<<<<<<<< You are going to need to re-dump your file or you will need to split your larger packets (probably INSERT statements) into smaller chunks. More troubleshooting and information: http://dev.mysql.com/doc/refman/5.0/en/packet-too-large.html However, here it says the limit is 1GB: http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html I don't know which document to trust. Try changing it to use 16M chunks and see if that helps you work around the issue. Shawn Green Database Administrator Unimin Corporation - Spruce Pine
