SM21 System Log shows error

Dear All,

We are having SAP ECC 6.0 which is on Microsoft Windows Server 2003 R2 Enterprise x64 Edition. The Oracle is 10.2.0.2.0. The SAP_Basis is 700 & level is 10.

The SM21 System Log shows below text in log which appears in transactions,

Enqueue: Transfer error while reading lock entries

> Destination: eccprd_PRD_00

> ENQUE_READ exception code: 4

> RFC error when sending logon dat

> a.

You are requested to kindly look into the above error and provide your help to resolve this issue.

I am awaiting for your valuable feedback for the above.

Regards

Pikal