I am getting an error message from RMAN stating it cannot communicate with the Netbackup server.

I was told there is a syntax to test communication to media manager on the server. Does anyone have that???

Here is the RMAN error message:

RMAN-03009: failure of backup command on ch01 channel at 06/07/2006 16:11:35
ORA-19506: failed to create sequential file, name="bk_7086_1_592502150", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
VxBSACreateObject: Failed with error:
Server Status: Communication with the server has not been iniatated or the server status has not been retrieved from the server.