环境准备：
机器配置：
mysql5.7.42单机安装
1、二进制安装：
2、编辑配置文件：
3、初始化数据库：
4、配置环境变量:
5、制作启动文件：
6、用初始密码进入mysql，修改初始密码：
7、一些问题及解决办法
环境准备：
操作系统：CentOS7.9
[root@dengbao ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
mysql版本：mysql 5.7.42
1、二进制安装：
查看系统之前是否安装过mariadb 或者 mysql
rpm -qa | grep mariadb
rpm -pa | grep mysql
如果有则卸载
rpm -e mariadb-libs-5.5.52-1.el7.x86_64 --nodeps #这是强制卸载，不考虑依赖关系
再次检查
rpm -qa | grep mariadb
rpm -pa | grep mysql
官方已发布新版本。
https://dev.mysql.com/downloads/mysql/
目前8.0最新版本为8.0.33。
https://dev.mysql.com/downloads/mysql/5.7.html
目前5.7最新版本为5.7.42。
如下选择
image.png
下载这个
image.png
建立安装目录并上传mysql-5.7.42-el7-x86_64.tar.gz到/data/mysql7/下并解压
[root@dengbao ~]# mkdir -p /data/mysql7
[root@dengbao ~]# ll /data/
总用量 0
drwxr-xr-x 2 root root 6 7月 5 15:21 mysql7
[root@dengbao ~]# cd /data/mysql7/
[root@dengbao mysql7]# ll
总用量 728568
-rw-r--r-- 1 root root 746050963 7月 5 11:36 mysql-5.7.42-el7-x86_64.tar.gz
[root@dengbao mysql7]# tar -zxvf mysql-5.7.42-el7-x86_64.tar.gz
mysql-5.7.42-el7-x86_64/bin/myisam_ftdump
mysql-5.7.42-el7-x86_64/bin/myisamchk
mysql-5.7.42-el7-x86_64/bin/myisamlog
mysql-5.7.42-el7-x86_64/bin/myisampack
mysql-5.7.42-el7-x86_64/bin/mysql
mysql-5.7.42-el7-x86_64/bin/mysql_client_test_embedded
mysql-5.7.42-el7-x86_64/bin/mysql_config_editor
mysql-5.7.42-el7-x86_64/bin/mysql_embedded
mysql-5.7.42-el7-x86_64/bin/mysql_install_db
mysql-5.7.42-el7-x86_64/bin/mysql_plugin
... ...
mysql-5.7.42-el7-x86_64/lib/libmysqlclient.so
mysql-5.7.42-el7-x86_64/lib/libmysqlclient.so.20
mysql-5.7.42-el7-x86_64/lib/libmysqlclient.so.20.3.29
mysql-5.7.42-el7-x86_64/share/install_rewriter.sql
mysql-5.7.42-el7-x86_64/share/uninstall_rewriter.sql
mysql-5.7.42-el7-x86_64/support-files/magic
mysql-5.7.42-el7-x86_64/support-files/mysql.server
[root@dengbao mysql7]# ll
总用量 728568
drwxr-xr-x 9 root root 129 7月 5 15:24 mysql-5.7.42-el7-x86_64
-rw-r--r-- 1 root root 746050963 7月 5 11:36 mysql-5.7.42-el7-x86_64.tar.gz
[root@dengbao mysql7]# ll mysql-5.7.42-el7-x86_64
总用量 268
drwxr-xr-x 2 root root 4096 7月 5 15:24 bin
drwxr-xr-x 2 root root 73 7月 5 15:23 docs
drwxr-xr-x 3 root root 4096 7月 5 15:23 include
drwxr-xr-x 5 root root 230 7月 5 15:24 lib
-rw-r--r-- 1 7161 31415 255738 3月 16 23:25 LICENSE
drwxr-xr-x 4 root root 30 7月 5 15:23 man
-rw-r--r-- 1 7161 31415 566 3月 16 23:25 README
drwxr-xr-x 28 root root 4096 7月 5 15:24 share
drwxr-xr-x 2 root root 90 7月 5 15:24 support-files
[root@dengbao mysql7]# mv mysql-5.7.42-el7-x86_64 /usr/local/mysql7
[root@dengbao mysql7]# ll /usr/local/
总用量 0
drwxr-xr-x. 2 root root 6 4月 11 2018 bin
drwxr-xr-x. 2 root root 6 4月 11 2018 etc
drwxr-xr-x. 2 root root 6 4月 11 2018 games
drwxr-xr-x. 2 root root 6 4月 11 2018 include
drwxr-xr-x. 2 root root 6 4月 11 2018 lib
drwxr-xr-x. 2 root root 6 4月 11 2018 lib64
drwxr-xr-x. 2 root root 6 4月 11 2018 libexec
drwxr-xr-x 9 root root 129 7月 5 15:24 mysql7
drwxr-xr-x. 2 root root 6 4月 11 2018 sbin
drwxr-xr-x. 5 root root 49 6月 4 09:34 share
drwxr-xr-x. 2 root root 6 4月 11 2018 src
安装epel源
[root@dengbao mysql7]# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm /root
[root@dengbao mysql7]# cd /root
[root@dengbao ~]# yum install -y epel-release-latest-7.noarch.rpm
[root@dengbao ~]# yum makecache fast
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
epel/x86_64/metalink | 6.1 kB 00:00:00
* base: mirrors.aliyun.com
* epel: mirrors.bfsu.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
epel | 4.7 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
(1/3): epel/x86_64/updateinfo | 1.0 MB 00:00:00
(2/3): epel/x86_64/primary_db | 7.0 MB 00:00:00
(3/3): updates/7/x86_64/primary_db | 22 MB 00:01:11
元数据缓存已建立
[root@dengbao ~]# yum repolist
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.bfsu.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
源标识 源名称 状态
base/7/x86_64 CentOS-7 - Base - mirrors.aliyun.com 10,072
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 13,753
extras/7/x86_64 CentOS-7 - Extras - mirrors.aliyun.com 515
updates/7/x86_64 CentOS-7 - Updates - mirrors.aliyun.com 5,053
repolist: 29,393
yum repolist
安装依赖
[root@dengbao ~]# # yum -y install perl net-tools
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.bfsu.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
正在解决依赖关系
--> 正在检查事务
---> 软件包 net-tools.x86_64.0.2.0-0.24.20131004git.el7 将被 升级
---> 软件包 net-tools.x86_64.0.2.0-0.25.20131004git.el7 将被 更新
---> 软件包 perl.x86_64.4.5.16.3-291.el7 将被 升级
---> 软件包 perl.x86_64.4.5.16.3-299.el7_9 将被 更新
--> 正在处理依赖关系 perl-libs = 4:5.16.3-299.el7_9，它被软件包 4:perl-5.16.3-299.el7_9.x86_64 需要
--> 正在检查事务
---> 软件包 perl-libs.x86_64.4.5.16.3-291.el7 将被 升级
---> 软件包 perl-libs.x86_64.4.5.16.3-299.el7_9 将被 更新
--> 解决依赖关系完成
依赖关系解决
============================================================================================================================================================================
Package 架构 版本 源 大小
============================================================================================================================================================================
正在更新:
net-tools x86_64 2.0-0.25.20131004git.el7 base 306 k
perl x86_64 4:5.16.3-299.el7_9 updates 8.0 M
为依赖而更新:
perl-libs x86_64 4:5.16.3-299.el7_9 updates 690 k
事务概要
============================================================================================================================================================================
升级 2 软件包 (+1 依赖软件包)
总下载量：8.9 M
Downloading packages:
No Presto metadata available for base
No Presto metadata available for updates
(1/3): net-tools-2.0-0.25.20131004git.el7.x86_64.rpm | 306 kB 00:00:01
(2/3): perl-libs-5.16.3-299.el7_9.x86_64.rpm | 690 kB 00:00:02
(3/3): perl-5.16.3-299.el7_9.x86_64.rpm | 8.0 MB 00:00:25
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
总计 354 kB/s | 8.9 MB 00:00:25
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在更新 : 4:perl-libs-5.16.3-299.el7_9.x86_64 1/6
正在更新 : 4:perl-5.16.3-299.el7_9.x86_64 2/6
正在更新 : net-tools-2.0-0.25.20131004git.el7.x86_64 3/6
清理 : 4:perl-libs-5.16.3-291.el7.x86_64 4/6
清理 : 4:perl-5.16.3-291.el7.x86_64 5/6
清理 : net-tools-2.0-0.24.20131004git.el7.x86_64 6/6
验证中 : 4:perl-5.16.3-299.el7_9.x86_64 1/6
验证中 : net-tools-2.0-0.25.20131004git.el7.x86_64 2/6
验证中 : 4:perl-libs-5.16.3-299.el7_9.x86_64 3/6
验证中 : net-tools-2.0-0.24.20131004git.el7.x86_64 4/6
验证中 : 4:perl-5.16.3-291.el7.x86_64 5/6
验证中 : 4:perl-libs-5.16.3-291.el7.x86_64 6/6
更新完毕:
net-tools.x86_64 0:2.0-0.25.20131004git.el7 perl.x86_64 4:5.16.3-299.el7_9
作为依赖被升级:
perl-libs.x86_64 4:5.16.3-299.el7_9
完毕！
创建用户和用户组
groupadd mysql
useradd -g mysql mysql
创建mysql的数据、日志等数据存储目录
[root@dengbao mysql7]# pwd
/data/mysql7
[root@dengbao mysql7]# mkdir {data,log,var}
[root@dengbao mysql7]# ll
总用量 728568
drwxr-xr-x 2 root root 6 7月 5 16:49 data
drwxr-xr-x 2 root root 6 7月 5 16:49 log
drwxr-xr-x 2 root root 6 7月 5 16:49 var
给文件夹及文件授权
[root@dengbao mysql7]# chown -R mysql:mysql /data/mysql7/
[root@dengbao mysql7]# chown -R mysql:mysql /usr/local/mysql7/
[root@dengbao mysql7]# ll /data/mysql7
总用量 0
drwxr-xr-x 2 mysql mysql 6 7月 5 16:49 data
drwxr-xr-x 2 mysql mysql 6 7月 5 16:49 log
drwxr-xr-x 2 mysql mysql 6 7月 5 16:49 var
[root@dengbao mysql7]# ll /usr/local/mysql7
总用量 268
drwxr-xr-x 2 mysql mysql 4096 7月 5 15:24 bin
drwxr-xr-x 2 mysql mysql 73 7月 5 15:23 docs
drwxr-xr-x 3 mysql mysql 4096 7月 5 15:23 include
drwxr-xr-x 5 mysql mysql 230 7月 5 15:24 lib
-rw-r--r-- 1 mysql mysql 255738 3月 16 23:25 LICENSE
drwxr-xr-x 4 mysql mysql 30 7月 5 15:23 man
-rw-r--r-- 1 mysql mysql 566 3月 16 23:25 README
drwxr-xr-x 28 mysql mysql 4096 7月 5 15:24 share
drwxr-xr-x 2 mysql mysql 90 7月 5 15:24 support-files
2、编辑配置文件：
注意默认可能有/etc/my.cnf存在，备份 cp /etc/my.cnf /etc/my.cnf_back
[root@dengbao mysql7]# ll /etc/my*
ls: 无法访问/etc/my*: 没有那个文件或目录
在设置mysql数据库新密码前先不要在配置文件中设置“skip-name-resolve” 否则会报“Host ‘127.0.0.1’ is not allowed to connect to this MySQL server”解决办法就是先暂时注释掉这一条，设置好密码后再删除注释符号。
# vim /usr/local/mysql7/my.cnf
配置文件内容如下
[mysql]
default-character-set=utf8mb4
socket=/data/mysql7/var/mysql.sock
[mysqld]
basedir=/usr/local/mysql7
datadir=/data/mysql7/data
port=3309
socket=/data/mysql7/var/mysql.sock
character-set-server=utf8mb4
collation-server=utf8mb4_general_ci
log-error=/data/mysql7/log/mysqld.log
pid-file=/data/mysql7/var/mysqld.pid
query_cache_type = 1
query_cache_size = 32M
query_cache_limit = 2M
tmp_table_size = 1024M
max_heap_table_size = 1024M
#skip-name-resolve
innodb_print_all_deadlocks = 1
innodb_sort_buffer_size = 16M
slow_query_log = 1
slow-query-log-file=/data/mysql7/log/slow.log
long_query_time = 10
log-queries-not-using-indexes = 1
open_files_limit = 65535
max_connections = 4000
wait_timeout = 28800
max_connect_errors = 1000
table_open_cache = 512
key_buffer_size = 512M
max_allowed_packet = 200M
sort_buffer_size = 8M
join_buffer_size = 8M
net_buffer_length = 8K
read_buffer_size = 2M
read_rnd_buffer_size = 1M
myisam_sort_buffer_size = 20M
myisam_max_sort_file_size = 1G
myisam_repair_threads = 1
thread_cache_size = 64
log_bin=/data/mysql7/data/mysql-bin
relay_log=relay_bin
log_slave_updates=on
gtid_mode=ON
enforce_gtid_consistency=ON
binlog_format=mixed
binlog_cache_size = 1M
server-id = 2
expire_logs_days = 30
sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_purge_threads = 1 #收据回收使用单独线程
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_buffer_pool_size = 10G #设置物理内存的80%
innodb_log_file_size = 64M
innodb_log_buffer_size = 8M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0 #不限制并发数
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 30 #事务等待超时，放弃事务回滚的时间10秒
[client]
port= 3309
default-character-set=utf8mb4
socket=/data/mysql7/var/mysql.sock
3、初始化数据库：
数据库初始化
[root@dengbao mysql7]# cd /usr/local/mysql7/
[root@dengbao mysql7]# ll
总用量 272
drwxr-xr-x 2 mysql mysql 4096 7月 5 15:24 bin
drwxr-xr-x 2 mysql mysql 73 7月 5 15:23 docs
drwxr-xr-x 3 mysql mysql 4096 7月 5 15:23 include
drwxr-xr-x 5 mysql mysql 230 7月 5 15:24 lib
-rw-r--r-- 1 mysql mysql 255738 3月 16 23:25 LICENSE
drwxr-xr-x 4 mysql mysql 30 7月 5 15:23 man
-rw-r--r-- 1 root root 2046 7月 5 17:29 my.cnf
-rw-r--r-- 1 mysql mysql 566 3月 16 23:25 README
drwxr-xr-x 28 mysql mysql 4096 7月 5 15:24 share
drwxr-xr-x 2 mysql mysql 90 7月 5 15:24 support-files
[root@dengbao mysql7]# chown -R mysql:mysql /usr/local/mysql7/
[root@dengbao mysql7]# ll
总用量 272
drwxr-xr-x 2 mysql mysql 4096 7月 5 15:24 bin
drwxr-xr-x 2 mysql mysql 73 7月 5 15:23 docs
drwxr-xr-x 3 mysql mysql 4096 7月 5 15:23 include
drwxr-xr-x 5 mysql mysql 230 7月 5 15:24 lib
-rw-r--r-- 1 mysql mysql 255738 3月 16 23:25 LICENSE
drwxr-xr-x 4 mysql mysql 30 7月 5 15:23 man
-rw-r--r-- 1 mysql mysql 2046 7月 5 17:29 my.cnf
-rw-r--r-- 1 mysql mysql 566 3月 16 23:25 README
drwxr-xr-x 28 mysql mysql 4096 7月 5 15:24 share
drwxr-xr-x 2 mysql mysql 90 7月 5 15:24 support-files
[root@dengbao mysql7]# su mysql
[mysql@dengbao mysql7]$ pwd
/usr/local/mysql7
[mysql@dengbao mysql7]$ ./bin/mysqld --initialize --lower-case-table-names=1 --user=mysql --basedir=/usr/local/mysql7 --datadir=/data/mysql7/data
2023-07-05T09:50:57.443239Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2023-07-05T09:50:57.443456Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
2023-07-05T09:50:57.443841Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2023-07-05T09:50:58.626169Z 0 [Warning] InnoDB: New log files created, LSN=45790
2023-07-05T09:50:58.818397Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2023-07-05T09:50:58.881569Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 71957038-1b19-11ee-8e35-000c29b0bd44.
2023-07-05T09:50:58.896994Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2023-07-05T09:50:59.479203Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2023-07-05T09:50:59.479219Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2023-07-05T09:50:59.480386Z 0 [Warning] CA certificate ca.pem is self signed.
2023-07-05T09:50:59.736452Z 1 [Note] A temporary password is generated for root@localhost: qS,iqvajq5oY
[mysql@dengbao mysql7]$ ll /data/mysql7/data/
总用量 110660
-rw-r----- 1 mysql mysql 56 7月 5 17:50 auto.cnf
-rw------- 1 mysql mysql 1676 7月 5 17:50 ca-key.pem
-rw-r--r-- 1 mysql mysql 1112 7月 5 17:50 ca.pem
-rw-r--r-- 1 mysql mysql 1112 7月 5 17:50 client-cert.pem
-rw------- 1 mysql mysql 1676 7月 5 17:50 client-key.pem
-rw-r----- 1 mysql mysql 436 7月 5 17:51 ib_buffer_pool
-rw-r----- 1 mysql mysql 12582912 7月 5 17:51 ibdata1
-rw-r----- 1 mysql mysql 50331648 7月 5 17:51 ib_logfile0
-rw-r----- 1 mysql mysql 50331648 7月 5 17:50 ib_logfile1
drwxr-x--- 2 mysql mysql 4096 7月 5 17:51 mysql
drwxr-x--- 2 mysql mysql 8192 7月 5 17:51 performance_schema
-rw------- 1 mysql mysql 1680 7月 5 17:50 private_key.pem
-rw-r--r-- 1 mysql mysql 452 7月 5 17:50 public_key.pem
-rw-r--r-- 1 mysql mysql 1112 7月 5 17:50 server-cert.pem
-rw------- 1 mysql mysql 1676 7月 5 17:50 server-key.pem
drwxr-x--- 2 mysql mysql 8192 7月 5 17:51 sys
# 执行完后生成mysql默认root用户的密码 root@localhost: qS,iqvajq5oY 之后登录需要用到这里记录下来。
4、配置环境变量:
vim /etc/profile
# MYSQL7_HOME
MYSQL7_HOME=/usr/local/mysql7
export PATH=$PATH:$MYSQL7_HOME/bin
#刷新使环境变量生效
source /etc/profile
5、制作启动文件：
vim /etc/systemd/system/mysql7d.service
[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/usr/local/mysql7/bin/mysqld --defaults-file=/usr/local/mysql7/my.cnf
LimitNOFILE = 65536
LimitNPROC = 65536
保存退出
重新加载service文件
systemctl daemon-reload
设置开机启动
[root@anolis mysql7]# systemctl enable mysql7d
Created symlink /etc/systemd/system/multi-user.target.wants/mysql7d.service → /etc/systemd/system/mysql7d.service.
日常启停命令
[root@dengbao mysql7]# systemctl status mysql7d.service
● mysql7d.service - MySQL Server
Loaded: loaded (/etc/systemd/system/mysql7d.service; disabled; vendor preset: disabled)
Active: active (running) since 三 2023-07-05 18:11:37 CST; 6s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Main PID: 17704 (mysqld)
CGroup: /system.slice/mysql7d.service
└─17704 /usr/local/mysql7/bin/mysqld --defaults-file=/usr/local/mysql7/my.cnf
7月 05 18:11:37 dengbao systemd[1]: Started MySQL Server.
systemctl status mysql7d.service
systemctl stop mysql7d.service
6、用初始密码进入mysql，修改初始密码：
[root@dengbao log]# mysql -u root -p -h 127.0.0.1 -P 3309
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.42-log
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'pass123';
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select host,user from user where user='root';
+-----------+------+
| host | user |
+-----------+------+
| localhost | root |
+-----------+------+
1 row in set (0.00 sec)
mysql> update user set host='%',plugin='mysql_native_password' where user='root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select host,user from user where user='root';
+------+------+
| host | user |
+------+------+
| % | root |
+------+------+
1 row in set (0.00 sec)
7、设置mysql仅指定的IP段可以访问
mysql> use mysql;
mysql> select host,user from user where user='root';
+------+------+
| host | user |
+------+------+
| % | root |
+------+------+
mysql> update user set host='192.168.100.%',plugin='mysql_native_password' where user='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select host,user,plugin from user where user='root';
+---------------+------+-----------------------+
| host | user | plugin |
+---------------+------+-----------------------+
| 192.168.100.% | root | mysql_native_password |
+---------------+------+-----------------------+
1 row in set (0.00 sec)
退出后测试
[root@dengbao log]# mysql -u root -p -h 127.0.0.1 -P 3309
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[root@dengbao log]# mysql -u root -p -h 192.168.100.195 -P 3309
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.42-log MySQL Community Server (GPL)
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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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