# innobackupex-1.5.1: Error: mysql error: mysql: Unknown OS character set 'ISO-8859-15'

**URL:** <https://forums.percona.com/t/innobackupex-1-5-1-error-mysql-error-mysql-unknown-os-character-set-iso-8859-15/2203>\
**Category:** Percona XtraBackup\
**Created:** [February 1, 2012, 4:30am UTC](https://forums.percona.com/t/innobackupex-1-5-1-error-mysql-error-mysql-unknown-os-character-set-iso-8859-15/2203 "2012-02-01T04:30:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![plepps](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@plepps](https://forums.percona.com/u/plepps)\
**Post date:** [February 1, 2012, 4:30am UTC](https://forums.percona.com/t/innobackupex-1-5-1-error-mysql-error-mysql-unknown-os-character-set-iso-8859-15/2203/1 "2012-02-01T04:30:49Z")

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Hello,

I try to use xtrabackup on my Centos 6.2 x86\_64 with mysql 5.5.20. The backup failed always with:

120201 10:49:22 innobackupex-1.5.1: Starting mysql with options: --defaults-file=‘/etc/my.cnf’ --password=xxxxxxxx --user=‘root’ --unbuffered --120201 10:49:22 innobackupex-1.5.1: Connected to database with mysql child process (pid=3930)innobackupex-1.5.1: Error: mysql error: mysql: Unknown OS character set ‘ISO-8859-15’.mysql: Switching to the default character set ‘latin1’

locale:

[root@mydb1 ~]# localeLANG=de\_DE@euroLC\_CTYPE="de\_DE@euro"LC\_NUMERIC="de\_DE@euro"LC\_TIME="de\_DE@euro"LC\_COLLATE="de\_DE@euro"LC\_MONETARY="de\_DE@euro"LC\_MESSAGES="de\_DE@euro"LC\_PAPER="de\_DE@euro"LC\_NAME="de\_DE@euro"LC\_ADDRESS="de\_DE@euro"LC\_TELEPHONE="de\_DE@euro"LC\_MEASUREMENT="de\_DE@euro"LC\_IDENTIFICATION="de\_DE@euro"LC\_ALL=

I get the same with UTF8.

Where is my mistake?

Regards,  
Thomas