Revoering deleted records

Revoering deleted records

Hi, I accidentally deleted all the system log records in Servicedesk plus (in support--> system log viewer). Now it shows only few records from the past couple of hours.  Is it possible to recover those records from the backend database?  Like from transaction logs?  I have taken a snapshot of the VM server where servicedesk plus is installed, within few hours after deletion as a backup. 
Please let me know.  My version of servicedesk plus is  9.0 Build 9017. 

-Thanks. 

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