Error during implenting Data Guard

Question

I am implementing Data guard on two different PC's by following this URL,
http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/11g/r2/prod/ha/dataguard/physstby/physstdby.htm
i the last step when i execute RMAN script, it is giving errors, i need your help in resolving this.
RMAN> run {
allocate channel prmy1 type disk;
allocate channel prmy2 type disk;
allocate channel prmy3 type disk;
allocate channel prmy4 type disk;
allocate auxiliary channel stby type disk;
duplicate target database for standby from active database
spfile
parameter_value_convert 'tmdb','tbdb'
set db_unique_name='tbdb'
set db_file_name_convert='/tmdb/','/tbdb/'
set log_file_name_convert='/tmdb/','/tbdb/'
set control_files='/u01/app/oracle/oradata/tbdb/tbdb1.ctl'
set log_archive_max_processes='5'
set fal_client='tbdb'
set fal_server='tmdb'
set standby_file_management='AUTO'
set log_archive_config='dg_config=(tmdb,tbdb)'
set log_archive_dest_2='service=tmdb ASYNC
valid_for=(ONLINE_LOGFILE,PRIMARY_ROLE) db_unique_name=tmdb'
Output of Script
using target database control file instead of recovery catalog
allocated channel: prmy1
channel prmy1: SID=16 device type=DISK
allocated channel: prmy2
channel prmy2: SID=21 device type=DISK
allocated channel: prmy3
channel prmy3: SID=152 device type=DISK
allocated channel: prmy4
channel prmy4: SID=24 device type=DISK
allocated channel: stby
channel stby: SID=135 device type=DISK
Starting Duplicate Db at 19-APR-11
contents of Memory Script:
backup as copy reuse
targetfile '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/orapwtmdb' auxiliary format
'/u01/app/oracle/product/11.2.0/dbhome_1/dbs/orapwtbdb' targetfile
'/u01/app/oracle/product/11.2.0/dbhome_1/dbs/spfiletmdb.ora' auxiliary format
'/u01/app/oracle/product/11.2.0/dbhome_1/dbs/spfiletbdb.ora' ;
sql clone "alter system set spfile= ''/u01/app/oracle/product/11.2.0/dbhome_1/dbs/spfiletbdb.ora''";
executing Memory Script
Starting backup at 19-APR-11
RMAN-03009: failure of backup command on prmy1 channel at 04/19/2011 14:46:28
ORA-17627: ORA-12577: Message 12577 not found; product=RDBMS; facility=ORA
continuing other job steps, job failed will not be re-run
released channel: prmy1
released channel: prmy2
released channel: prmy3
released channel: prmy4
released channel: stby
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 04/19/2011 14:46:29
RMAN-03015: error occurred in stored script Memory Script
RMAN-03009: failure of backup command on prmy2 channel at 04/19/2011 14:46:28
ORA-17627: ORA-12577: Message 12577 not found; product=RDBMS; facility=ORA

Answer 1

https://supporthtml.oracle.com/ep/faces/secure/km/BugDisplay.jspx?id=8406972&bugProductSource=Oracle&h=Y
WORKAROUND:
Use RMAN duplicate database based on backup
https://supporthtml.oracle.com/ep/faces/secure/km/BugDisplay.jspx?id=10339515&bugProductSource=Oracle&h=Y
WORKAROUND:
Make sure that the raw partition on the Standby has equal size than the one
on the Primary.