rman: cannot delete device type

[krempe]

Hi,

I configured a defalut device type "sbt_tape" with RMAN, "show all" says:

CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS '???nsr_env=(nsr_server=su10, nsr_group=default)';

Maybe the "???" is the problem, but I cannnot delete the device:
RMAN> CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' CLEAR;

old RMAN configuration parameters:
CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS '???nsr_env=(nsr_server=su10, nsr_group=default)';
old RMAN configuration parameters are successfully deleted

but "show all" says:
CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS '???nsr_env=(nsr_server=su10, nsr_group=default)';

Reconfigure of DEVICE TYPE 'SBT_TAPE' works, but than "show all" says:
RMAN-12010: automatic channel allocation initialization failed
RMAN-12014: multiple records for default channel configuration for SBT_TAPE found in catalog

Any ideas?

Thanks,

[Thomasps]

This should go.

configure channel c1 device type sbt parms 'ENV=(NSR_SERVER=, NSR_CLIENT=,NSR_GROUP=)';

[krempe]

trying this I get:

MAN-00558: error encountered while parsing input commands
RMAN-01005: syntax error: found "identifier": expecting one of: "device, integer"
RMAN-01008: the bad identifier was: c1

[Thomasps]

try

configure channel 1 device type sbt parms 'ENV=(NSR_SERVER=nsr_sever_name, NSR_CLIENT=client_name,NSR_GROUP=DEFAULT)';

[krempe]

Works!
But I don't know why I can't get rid of the " configure channel c1 ..."