SAP CLUSTER ISSUE

Hi experts,

               we have SAP in Redhat LINUX Cluster environment with 2 nodes.  version: EHP6 on sybase ASE.

               sap is on a Virtual host. we have all the instance ERS, ASCS, Central Instance and Dailog Instance all on same Virtual

              Host. on individual nodes SAP is coming up and running fine.

              but when i move the resource (cluster service ) from first node to second node. my whole sap application(including database) is shuting

              down. Is this a cluster related issue, or is there any parameters need to be set from SAP side.

please let me know if you require more details.

thanks & Regards,

Amar