Cause:
Unexpected server reboot.
Checking the system messages file, we can see that at the same time the instances fail to mount, there are several errors reported at OS level. For example:
Unexpected server reboot.
Checking the system messages file, we can see that at the same time the instances fail to mount, there are several errors reported at OS level. For example:
Aug 21 16:30:04 ....sis_agent_syncml: [ERROR] "select() to host 'pbgw' on port 21000""System Error 113: No route to host""-"
Aug 2116:30:04 ....sis_agent_syncml: [WARNING] "SQL Server: Native Error: No SQL-Server connection available. bind() failed [master pool], connections in use: 1""-""-"
Aug 2116:30:04 ....sis_agent_syncml: [WARNING] "SQL Server: Native Error: No SQL-Server connection available. bind() failed [master pool], connections in use: 1""-""-"
Fix:
Resolve all the OS errors. In my case another reboot of the same server fixed the issue.