I have recently upgraded mysqld (percona server) from 5.5.60-38.12 to 5.5.62-38.14. This is on Debian, and the upgrade was done like this:

# apt-get update
# apt-get upgrade

I am surprised to find that the version is reported differently internally from what I get on the command line:

db3 root = mysql -V
mysql  Ver 14.14 Distrib 5.5.62-38.14, for debian-linux-gnu (x86_64) using readline 5.1
mysql> select version();
| version()        |
| 5.5.60-38.12-log |
1 row in set (0.00 sec)

Is this normal? Or do I need to do something to fix this issue?

Edit: I've allso checked the installed packages:

db3 root = dpkg -l | grep percona
ii  libperconaserverclient18        5.5.62-rel38.14-1.stretch         amd64        Percona Server database client library
ii  percona-server-client-5.5       5.5.62-rel38.14-1.stretch         amd64        Percona Server database client binaries
ii  percona-server-common-5.5       5.5.62-rel38.14-1.stretch         amd64        Percona Server database common files
ii  percona-server-server-5.5       5.5.62-rel38.14-1.stretch         amd64        Percona Server database server binaries
ii  percona-toolkit                 3.1.0-2.stretch                   amd64        Advanced MySQL and system command-line tools
ii  percona-xtrabackup              2.3.10-1.stretch                  amd64        Open source backup tool for InnoDB and XtraDB

2 Answers 2


Answering my own question, in case other might benefit.

The explanation, it turns out, was that although the upgrade succeeded, the restart of the daemon had failed silently. It took a kill -9 and systemctl start mysql to sort that out.


This is little incorrect steps to upgrade mysql version.

Although, to overcome this you can try below steps if it fixes this issue.

  1. Try mysql_upgrade,

mysql_upgrade -uuser -ppassword

  1. Restart mysql instance,

systemctl restart mysql

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