In this article we will see an interesting thing. When I was starting reading Oracle 12c Documentation I read that one of the enhancements of RMAN was Multi Section and another enhancement was the int...
Since in Oracle Database 12c we can now use Active Duplicate using Backup set we also have another option, create that backupset Compressed, in that case what we are doing is to compress the BackupSet...
In previous versions, the only way to use Active Duplicate was with "image copies". However Oracle 12c introduced a new feature for Active Duplicate operations, now it is possible to do the duplicatio...
A frequent question that I have received from many DBAs is: my undo tablespace is almost full, how can I be sure that the space will be reused? Well, First you have to know that there are two kind of...
In this article I will show you how undo retention time is set when we have an Undo tablespace with autoextend enabled and also disabled. I will give you rules in order to remember this easily: Rule-...
While I was playing with "Scrub repair" in 12c I found the following: "RMAN doesn't report a corrupt block in a diskgroup with NORMAL or HIGH Redundancy if there is at least one good mirror block in ...
How to know if I will be able to use successfully my RMAN Backup? that's is a question performed for many DBA's, RMAN also provide functions to validate corrupted blocks in the database, but also it p...
Some days ago Michael Abbey invited me to a dinner (René Antunez Oracle ACE, also was there) in his apartment in Ottawa. He is such an admirable person, he is also an Oracle ACE and he likes to share ...
Some people still think that the ASM is which performs all IO activity of our database, I have seen several DBAs worried about to use ASM because of the database will have a new "IO Layer", that is a...
I have heard many times from many DBAs that when a data block corruption happen in a disk which is part of a Diskgroup using normal redundancy, only the mirror block will take care of the coming datab...
