Database conflict errors are comming in my site

I am using Plone4.3 , last few days, I am getting database conflict errors in my error logs, Due to this time only i feel my site getting down many times, and page edit funcationlity is also going slow , can you tell me how to protect it.

Please provide the related messages from your logs.

Database (write) conflicts usually occur when multiple requests are trying to modify a persistent object the same time. The OID given in the logs may help you to identify the related object and then the related code. The reason might be improper programming....various reasons.