svchost(780)数据库引擎已停止--周期性出现

微软官方解释：
Product:	Windows Operating System
Event ID:	101
Source:	ESENT
Version:	5.2
Symbolic Name:	STOP_ID
Message:	%1 (%2) %3The database engine stopped.
Explanation
The extensible storage engine database engine stopped. Possible causes include: An online restoration failed. There may be missing log files on the computer or in an online restoration, or there may be old log files that are out of sequence with the log that is mentioned in the Restore.env file. A database could not be loaded. The directory where the database or logs exist might not have the correct permissions assigned to it in order to load the store. An information store was unloaded. There might be file-level virus-scanning software running against the log file directory.

翻译：

扩展存储引擎数据库停止

可能为以下原因导致：

1、在线恢复失败，有可能是丢失网络上或本地计算机的日志文件，或者可能是原有回收日志文件是非顺序进行的。
2、数据库无法加载，所在目录的数据库或日志文件没有分配给它正确的权限进行加载存储，存储信息没加载上。
3、有可能是文件级的病毒扫描软件阻止了日志文件目录。