Logg, Connie A. wrote:
I am running mysql version 5.0.24 and am seeing this error when running
mysqldump.
From what I can find on the web, this message is generated by an error in the
mysql code.
Please correct me if I am wrong.
Is this fixed in mysql 5.0.27 ?
Thanks,
Connie Logg, Network Analyst
Stanford Linear Accelerator Center
ph: 650-926-2879
Happiness is found along the way, not at the end of the road, and 'IF' is the middle word in life.
Connie,
this is not an error but a normal SQL statement with a hint:
/*!40001 SQL_NO_CACHE */ means that MySQL shall not cache this query and
its corresponding result set. That makes perfect sense because one can
assume that this statement will be issued just once (by mysqldump) and
you wouldn't benefit from caching it.
It seems that it takes a long time for this select to complete but there
are not many ways to improve the situation. Maybe a faster (and
exclusive) dump device?
Do you use replication? That can help a lot because then
o you can seperate workload (master) and dump activities (slave)
o you can silence the slave and dump the slave in a consistent manner
because no data changes during the dump.
o you can set up more slaves to spread the workload even more
From what you told about the completion time of your dump it seems you
should re-design your whole MySQL setup.
Regards,
Frank.
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