表的元信息，比如总行数和修改数 gc_delete_range GLOBAL_VARIABLES 全局系统变量表 tidb 用于 TiDB 在 bootstrap 的时候记录相关版本信息 INFORMATION_SCHEMA 库里面的表主要是为了兼容 MySQL 而存在，有些第三方软件会查询里面的信息。在目前 TiDB 的实现中，里面大部分只是一些空表。 提供字符集相关的信息，其实数据是假的。TiDB DB 默认支持并且只支持 utf8mb4 。 TiDB 系统数据库 权限系统表 服务端帮助信息系统表 统计信息相关系统表 GC Worker 相关系统表 其它系统表 INFORMATION_SCHEMA 里面的表 CHARACTER_SETS Table TiDB 系统数据库 - 32 - 本文档使用 书栈(BookStack.CN) 构建 1. mysql> select * from CHARACTER_SETS; -------|----------------------------|------------------------|----------+ 5. | def | INFORMATION_SCHEMA | utf8 | utf8_bin | NULL | 6. | def | mysql

. . . . . . . . 35 3 Basic VirtualBox concepts; some examples 39 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 39 3.2 Changing machine settings. Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 11 License information 328 12 Main API change log 329 12.1 Incompatible API changes with version 4.2 . . . . . . . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

. . . . . . . . 34 3 Basic VirtualBox concepts; some examples 39 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 39 3.2 Changing machine settings. Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 11 License information 298 14 Contents 12 Main API change log 299 12.1 Incompatible API changes with version 4.1 . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

. . . . . . . . 37 3 Basic VirtualBox concepts; some examples 45 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 45 3.2 Changing machine settings. Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 11 License information 364 12 Main API change log 365 12.1 Incompatible API changes with version 4.3 . . . . . . . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

. . . . . . . . 37 3 Basic VirtualBox concepts; some examples 45 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 45 3.2 Changing machine settings. Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 11 License information 364 12 Main API change log 365 12.1 Incompatible API changes with version 4.3 . . . . . . . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

. . . . . . . . 39 3 Basic VirtualBox concepts; some examples 47 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 47 3.2 Changing machine settings: Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405 12 License information 406 13 Main API change log 407 13.1 Incompatible API changes with version 5.x . . . . . . . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

. . . . . . . . 39 3 Basic VirtualBox concepts; some examples 47 3.1 Obtaining basic machine information. Reading attributes . . . . . . . . . . . . . 47 3.2 Changing machine settings: Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404 12 License information 405 13 Main API change log 406 13.1 Incompatible API changes with version 5.x . . . . . . . . documentation, the binaries are instead shipped with the platform-specific packages. For this reason the information how to run it as a service is included in the VirtualBox documentation. The vboxwebsrv program

aliasing of the NAT engine . . . . . . . . . . . . . . . . . . 158 9.12 Configuring the BIOS DMI information . . . . . . . . . . . . . . . . . . . . . . . 159 9.13 Fine-tuning timers and time synchronization and isolating problems . . . . . . . . . . . . . . . . . . . . 178 12.1.2 Collecting debugging information . . . . . . . . . . . . . . . . . . . . . 179 12.1.3 The built-in VM debugger . . . . . . . . installation failures . . . . . . . . . . . . . . . . . . . . 184 12.3.4 How to record bluescreen information from Windows guests . . . . . . 185 12.3.5 No networking in Windows Vista guests . . . . . . .

aliasing of the NAT engine . . . . . . . . . . . . . . . . . . 211 9.12 Configuring the BIOS DMI information . . . . . . . . . . . . . . . . . . . . . . . 212 9.13 Configuring the custom ACPI table . . . Host isolation detection . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 9.22.3 More information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 9.22.4 Linux: starting the watchdog and isolating problems . . . . . . . . . . . . . . . . . . . . 259 12.1.2 Collecting debugging information . . . . . . . . . . . . . . . . . . . . . 260 12.1.3 The built-in VM debugger . . . . . . . .

aliasing of the NAT engine . . . . . . . . . . . . . . . . . . 210 9.12 Configuring the BIOS DMI information . . . . . . . . . . . . . . . . . . . . . . . 211 9.13 Configuring the custom ACPI table . . . Host isolation detection . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 9.22.3 More information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 9.22.4 Linux: starting the watchdog isolating problems . . . . . . . . . . . . . . . . . . . . 258 7 Contents 12.1.2 Collecting debugging information . . . . . . . . . . . . . . . . . . . . . 259 12.1.3 The built-in VM debugger . . . . . . . .