What is OWSTIMER.EXEOWSTIMER.EXE is a SharePoint Timer Service from Microsoft Corporation belonging to Microsoft SharePoint. The SharePoint Timer Service is a Window service that is installed with Windows SharePoint Services. This program is used to handled scheduled jobs related to Windows SharePoint.
File Location: C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\50\bin\OWSTIMER.EXE Service Name: SPTimer Display Name: SharePoint Timer Service
Why OWSTIMER.EXE is taking high memory usage on the server?Sometimes, you have noticed that your system consumes high memory due to owstimer.exe. The possible reason for this high memory usage on the server is due to the existing timer jobs over lapping with each other. You can also check the following things to narrow down the issue.
1) Check if you have any timer jobs over lapping with each other
2) As the owstimer.exe is spiking up there should be particular time slot in this happens If yes whats the user hit on server on the particular slot
3) Can you stop sharepoint timer service and check with the behavior.
4) Can you check the Application pool setting are they getting recycled often ?.