After backup restore sat is not starting sapecc6+db2
we are implementing the DR for production server . Primary server in house only and stand by server installed in the third party data center. so we are installed and sap upgrade the ehp4 in standby server , and we are restore the primary server backup in standby server, it is restored successfully but after backup environment variable deleted automatically after that we configured environment variables manually and start the sap. when we start the sap it is showing the error command not found. please advice me how to correct this issue.