Hi Baris & John

I have had my good and bad times with Legato for some years now.  The 
latest challenge we are in the process of implementing is the BCV based 
backups onto EMC CDL.  The million dollar question was whether to use RMAN 
or Filesystem backups when it comes to ORACLE Databases.  I personally feel 
as well my team of DBAs think, if we do a filesystem backup of the BCVs, in 
case of a need to recover one tablespace out of the database, we may have 
to do a full filesystem restore and then work towards isolating that 
tablespace.  With RMAN, I found the greatest convenience of point in time 
recovery, as well more granular recovery of database components.  This 
certainly comes as a biggest advantage in my mind to backup through RMAN. 

However, we are going through considerable trouble points in backing up the 
BCV mounted databases through RMAN using a RCAT.  Arch log validation is 
posing issues, along with couple of occasions when we got RMAN reporting 
corrupted block in the archive log file or one of the datafiles 
(interesting though, the database started fine before the backup kicked 
off, after the crash recovery etc.etc.) 

Since I noticed this interesting thread I thought of responding my 
perspectives.  Also I feel we can collaborate and toss across some familiar 
issues or suggestions we could share in this area.  We are a HPUX shop with 
EMC symm and Legato. 
 

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