I have an issue with backing up two SAP datafiles using rman, the only thing it points to is the Datafiles are bigger that 2Gb. i tested this by changing the size of one of the three datafiles to less than 2 Gb, it then backed up fine using RMAN, unfortunately i have 4 other systems that i have to do and am unable to keep doing the same thing for each.
Please can someone let me know what i can look at or change to stop this nagging little problem.
Sounds like you need to ask your sysadmin to ensure that largefiles support is set for the filesystems involved. There is a paper here http://docs.hp.com/en/940/lgfiles4.pdf , though it is rather old and may have been updated since. Section 3 might be relevant to you.
If I have to choose between two evils, I always like to choose the one I haven't tried yet.
The plot has just thickened, i have just found from the data backup guys that its backing up to disk....i am now pretty certain that the destination is a problem i.e. large file support is not enabled on the destination server/servers.