If you are getting the following error in the system logs
The SharePoint Timer Service service terminated with service-specific error %%-2147467259.
This means that there is job failing in your environment causing a crash to the SharePoint Timer Service.
1- Check in your registry keys if you have the following keysExclusiveUpgradeMode; ExclusiveUpgradeFailed; ExclusiveUpgradeSessionId
2- Take backup for them and delete them.
3- Launch Central administration and delete the upgrade job from the job definition
4- Restart SharePoint Timer Server on all the servers