Hi Shravya,
Even we had a same problem, where we unable to view/access records and it is not getting opened.
The error is because when the PSA maintenance is launched, we can see that this is getting hang for long time and check that the work process log for the same in SM50, if it is getting stuck at the program SAPLSDIFRUNTIME where DELETE operation is performed on the table DDFTX which results Timeout or deadlock on table DDFTX, then ill suggest you next step.
Thx,
Siva