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Displaying posts with tag: mysql_upgrade (reset)

MariaDB 10.0 upgrade goes smoothly
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I have been meaning to update some systems to MariaDB 10.0 and finally had a bit of time to get around to that.  The documentation of specifics of what’s needed to go from MariaDB 5.5 to 10.0 can be found here and while it’s not very long it seems there’s little to actually do.

Having already upgraded some servers from MySQL 5.5 to 5.6 the process and appropriate configuration changes were very similar so all in all a rather non event.

One thing which is always a concern if systems can not be down for long is the time to do the upgrade. While you see many blog posts talking about taking a backup via mysqldump and then loading it all back this is not really an option on many systems I manage and a replacement

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MySQL Workbench Stuck in Fetching Mode
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Another obscure issue I ran into not long ago was when using MySQL Workbench, and clicking on a table, it became stuck in fetching mode.

What triggered the issue was a recent MySQL upgrade, but MySQL itself, not Workbench.

After checking the error log, we saw an error like:

Incorrect definition of table mysql.proc: expected column
'comment' at position 15 to have type text, found type char(64)

Instantly, I knew mysql_upgrade needed to be ran in order to fix the “Incorrect definition” issue, and turns out that is the root cause for Workbench getting stuck in the “fetching” mode.

So the solution is to run mysql_upgrade. Should that not fix the table for some reason, then you can also fix it alternatively with:

ALTER TABLE mysql.proc MODIFY `comment` text
CHARACTER SET utf8 COLLATE utf8_bin NOT NULL;
FLUSH TABLES;

Hope this helps.

 

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