Gents,
OS NT4, 816,rman 816.
I tired to do this...
Code:
RMAN> run{
2> allocate channel c1 type disk;
3> copy datafile 9 to  '\\tng\wagred8\test\df1.bak';
4> }
RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-08030: allocated channel: c1
RMAN-08500: channel c1: sid=14 devtype=DISK

RMAN-03022: compiling command: copy
RMAN-03023: executing command: copy
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03007: retryable error occurred during execution of command: copy
RMAN-07004: unhandled exception during command execution on channel c1
RMAN-10035: exception raised in RPC: ORA-19504: failed to create file "\\TNG\WAGRED8\T
DF1.BAK"
ORA-27040: skgfrcre: create error, unable to create file
OSD-04002: unable to open file
O/S-Error: (OS 5) Toegang is geweigerd.
ORA-19600: input file is datafile 9 (D:\ORANT\ORADATA\NICK\T11.ORA)
ORA-19601: output file is datafile-copy 0 (\\TNG\WAGRED8\TEST\DF1.BAK)
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.COPYDATAFILE
It is apparently the I/O error. But does it also have to do with the permissions.(I do have the log in as batch mode o/s priv).

Any body have experience and eventual remedy for that?

Tarry