Need help for troubleshooting/diagnostic Sitecore Website

Question

Few days we stuck in different problem after code drop. Everything was fine earlier but after code drop Memory and CPU uses are approx 100% and even website was not stable. It was throwing errors 'Value cannot be null'. But Sitecore admin interface was always accessible and we can preview website from Master Database.

We did publish (Republish Site/Nodes, Smart publish, incremental publish also) but cannot figure out problem. Could you please help, how could we troubleshoot in such situation?

Answer 1

Thanks all for your providing help.

We solved this issue while analyzing root cause.

Sitecore was running agents after certain time interval and it was failing to complete it because on dependency on another thing. So at last all thing mess with creating a dead end loop. Which was eating all CPU memories. So it was not communicating well with database servers to get data.

After resetting IIS, all jobs are ended for a while and it works after same dead loop.

Answer 2

If preview is working and the main website is not, you likely have content items (either templates, sublayouts, or fields) that are not in a publishable state.

If you still have the package you used to install your update, it should have the content items that were added, which would help you track down which items to check for.

Additionally, you can write code to crawl your Templates tree and find any items that are not in the final state of workflow.