环境:
2台sql Server 2012 Always ON服务
现象:
Always ON服务正常,同步正常,应用正常。
Second Server Server Agent 启动数秒后就自动停止。
处理过程:
1、查看Windows 系统日志,显示如下信息:
Date,Source,Severity,Message
09/25/2018 13:54:07,,information,[098] sqlServerAgent terminated (normally)
09/25/2018 13:54:07,,Error,[382] logon to server 'domain\sqlInstance' Failed (disableAgentXPs)
09/25/2018 13:54:07,,Error,[165] ODBC Error: 0<c/> Data source name not found and no default driver specified [sqlSTATE IM002]
09/25/2018 13:54:07,,Error,[165] ODBC Error: 0<c/> Data source name not found and no default driver specified [sqlSTATE IM002]
09/25/2018 13:54:07,,Error,[165] ODBC Error: 0<c/> Data source name not found and no default driver specified [sqlSTATE IM002]
09/25/2018 13:54:07,,Error,[165] ODBC Error: 0<c/> Data source name not found and no default driver specified [sqlSTATE IM002]
09/25/2018 13:54:07,,Error,[165] ODBC Error: 0<c/> Data source name not found and no default driver specified [sqlSTATE IM002]
09/25/2018 13:54:07,,Error,[000] Unable to connect to server 'domain\sqlInstance'; sqlServerAgent cannot start
09/25/2018 13:54:07,,Error,[150] sql Server does not accept the connection (error: 0). Waiting for sql Server to allow connections. Operation attempted was: Verify Connection On Start.
09/25/2018 13:53:37,,Error,[150] sql Server does not accept the connection (error: 0). Waiting for sql Server to allow connections. Operation attempted was: Verify Connection On Start.
09/25/2018 13:53:07,,Error,[150] sql Server does not accept the connection (error: 0). Waiting for sql Server to allow connections. Operation attempted was: Verify Connection On Start.
09/25/2018 13:52:37,,Error,[150] sql Server does not accept the connection (error: 0). Waiting for sql Server to allow connections. Operation attempted was: Verify Connection On Start.
09/25/2018 13:52:07,,Error,[150] sql Server does not accept the connection (error: 0). Waiting for sql Server to allow connections. Operation attempted was: Verify Connection On Start.
09/25/2018 13:52:07,,information,[495] The sql Server Agent startup service account is domain\dbadmin.
09/25/2018 13:52:07,,information,[100] Microsoft sqlServerAgent version 11.0.3000.0 (X64 unicode retail build) : Process ID 1008
3、结合以上错误,似乎都指向ODBC,打开ODBC,发现ODBC 64bit 中Driver为空
正常是应该有sql Server和 sql Native Client 11这两个驱动的。
4、在sql Server 2012 安装包中找到sqlncli.msi 重新安装sql Native Client 11(注意选择重装,而不是修复)。
5、再次在ODBC中查看,sql Native Client 11已经有了。
6、重启sql Agent ,观察几分钟后没有再出现自动停止的现象,问题解决。
后面有看到一篇介绍ODBC驱动丢失的文章:http://www.cnblogs.com/chinalantian/archive/2016/06/13/5581644.html
了解到可能是卸载某些软件的时候会把ODBC中的部分驱动也删除,咨询客户表示近期有删除一些软件。
特此记录!
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