Question

当尝试连接mirthconnect以使用mariaDB而非Derby嵌入式DB时，创建数据库时mirth connect失败。

使用：

Ubuntu 18.04 LTS
MariaDB 10.1.29-MariaDB-6
Mirth Connect 3.6.0
Java openjdk 10.0.1

设置步骤：

安装Maria DB
安装Mirth connect。
创建与Mirth一起使用的数据库
在Maria DB中创建欢乐用户
配置欢乐连接以连接到Maria DB
启动欢乐服务

http://www.hpctech.org/8-steps-to-install-mirthconnect-with-mysql-mariadb-on-linux/

启动mirthconnect服务时，将引发以下异常。

ERROR 2018-07-04 15:13:11,013 [Main Server Thread]                 com.mirth.connect.server.Mirth: Failed to migrate database schema
com.mirth.connect.model.util.MigrationException: Failed to execute script: /mysql/mysql-database.sql
    at com.mirth.connect.server.migration.Migrator.executeScript(Migrator.java:103)
    at com.mirth.connect.server.migration.Migrator.executeScript(Migrator.java:86)
    at com.mirth.connect.server.migration.ServerMigrator.initDatabase(ServerMigrator.java:234)
    at com.mirth.connect.server.migration.ServerMigrator.migrate(ServerMigrator.java:59)
    at com.mirth.connect.server.controllers.DefaultMigrationController.migrate(DefaultMigrationController.java:91)
    at com.mirth.connect.server.Mirth.startup(Mirth.java:226)
    at com.mirth.connect.server.Mirth.run(Mirth.java:153)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
    at com.mysql.jdbc.Util.getInstance(Util.java:383)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1062)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4208)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4140)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2597)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2758)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2820)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2769)
    at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:907)
    at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:791)
    at com.mirth.connect.server.migration.Migrator.executeScript(Migrator.java:100)
    ... 6 more

已经创建了一半的数据库表

show tables;
+------------------------+
| Tables_in_mirthconnect |
+------------------------+
| CHANNEL                |
| EVENT                  |
| PERSON                 |
| PERSON_PASSWORD        |
| PERSON_PREFERENCE      |
| SCHEMA_INFO            |
| SCRIPT                 |
+------------------------+

谁能告诉我：

该异常意味着什么？
如何解决该错误？

Answer 1

有问题的错误

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes

似乎与键长有关-数据库默认字符集是utf16而不是utf8，因此，由于字符的大小（以字节为单位），表之一的键大小实际上大于767字节。

在创建欢乐数据库时-确保将字符集设置为UTF8

create database mirthconnect character set utf8 collate utf8_general_ci;

如何迁移Mirthconnect以使用MySQL / MariaDB

1 个答案: