Solution: exceptiole 'xxxxx QRTZ_ Locks' doesn't exist and MySQL's my CNF file append lower_ case_ table_ Error message after names startup

solve ：com.mysql.cj.jdbc.exceptiole ‘xxxxx.QRTZ_LOCKS’ doesn’t exist

Here we are xxxxx There is this table under the library , But I didn't recognize that it was capitalized , We need to change mysql The configuration file

stay mysql Of my.cnf The contents of the document [mysqld] Add... Below lower_case_table_names=1

lower_case_table_names Parameters, ：
lower_case_table_names = 0|1
among 0： Case sensitive ,1： Case insensitive
MySQL stay Linux Next database name 、 Table name 、 Name 、 This is the case rule for aliases ：
　　 1、 Database and table names are strictly case sensitive ;
　　 2、 Table aliases are strictly case sensitive ;
　　 3、 Column names and column aliases are case insensitive in all cases ;
　　 4、 Variable names are also strictly case sensitive ;

modify my.cnf Initiate error reporting ：

mysql It's stopped

step 1, Backup mysql Of data file , And delete the original data All the documents in it

cp -rf  Resource location   Target location 

step 2, Change good my.cnf The configuration file , I didn't add lower_case_table_names This configuration is also added

[mysqld]
#bind-address=0.0.0.0
character_set_server=utf8
skip-name-resolve
port=3306
user=mysql
basedir=/home/myqxin/java/mysql
datadir=/home/myqxin/java/mysql/data
socket=/home/myqxin/java/mysql/data/mysql.sock
lower_case_table_names=1
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[client]
default-character-set=utf8
port=3306
socket=/home/myqxin/java/mysql/data/mysql.sock

[mysqld_safe]


#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

step 3, Get into mysql Of bin Under the table of contents , Initialize database

./mysqld --defaults-file=/etc/my.cnf --basedir=/home/myqxin/java/mysql/ --datadir=/home/myqxin/java/mysql/data/ --user=mysql --initialize

Initialization complete , An initial password will be automatically generated , Write it down first , Log in later
The effect is as follows ：

step 4, start-up Mysql service

#  Start order 
service mysql start
#  Stop ordering 
service mysql stop

The effect is as follows ：

step 5, Get into mysql Of bin Under the table of contents , Sign in mysql（ When prompted for a password , Is the password generated by our initialization , If you forget , Delete data Catalog , Start over from that step ）

step 6, Change Password

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

Refresh

flush privileges;

step 7, Log in with the new password , Configure remote access （ The above does not allow remote access , It needs to be modified to allow remote connections , Steps are as follows ）

step 8, See if it's case sensitive

show variables like 'lower%'