RMAN

Oracle 12c – How to correct the error: “RMAN-20005: target database name is ambiguous”

By William Sescu I do have a Data Guard environment, where I have configured the RMAN DB_UNIQUE_NAME persistent setting for my primary and the standby. With the RMAN DB_UNIQUE_NAME settings I am able to run reports my Oracle Data Guard(…)

Oracle 12c – Issues with the HEATMAP Segment even if the heat map feature is not used

By William Sescu When I don’t need I feature, I don’t turn it on, or do not use it because it reduces the possibility to run into issues. Most of the times this is true, however, during the preparation for(…)

Oracle 12c – RMAN list failure does not show any failure even if there is one

By William Sescu Relying to much on the RMAN Data Recovery Advisor is not always the best idea. In a lot of situations,  it tells you the right things, however, sometimes it tells you not the optimal things, and sometimes,(…)

Oracle – RMAN Backups to CIFS

By William Sescu Not to often, but sometimes you need to offload your RMAN backups and your DataPump exports to CIFS. You might run out of space on your NFS server, or you are a Windows shop who has only(…)

Oracle 12cR2 – RMAN cold backup with TAG’s

By William Sescu I am planning to backup my 12R2 container database, because a huge application change is coming up, and I want to be sure that I have a good RMAN backup beforehand. For that particular DB, I(…)

Oracle 12cR2 – DataGuard and Backups to NFS

By William Sescu From the RMAN point of view, you have generally two possibilities to store your backups, on Disk or on Tape. In case of a single instance, it doesn’t really matter from the accessible or inaccessible point of(…)

RMAN> TRANSPORT TABLESPACE

By Franck Pachot . In a previous post I explained how to use transportable tablespace from a standby database. Here I'm showing an alternative where you can transport from a backup instead of a standby database.

Oracle 12c – Finding the DBID – The last resort

By William Sescu The DBID is a very important part for Oracle databases. It is an internal, uniquely generated number that differentiates databases. Oracle creates this number automatically as soon as you create the database. During normal operation, it is(…)

Oracle 12c – DB_UNKNOWN in ASM

By William Sescu Have you ever noticed a DB_UNKNOWN directory in your ASM structure? It usually happens in combination with spfile creation in ASM, or with RMAN spfile restores to ASM. The correct location is +DATA/<SID>/PARAMETERFILE/SPFILE.<#>.<#>, and an ASM alias(…)

Oracle 12c – Difference between ‘%F’ #default and ‘%F’

By William Sescu Do you see any differences between these two RMAN SHOW commands? RMAN> SHOW CONTROLFILE AUTOBACKUP FORMAT; RMAN configuration parameters for database with db_unique_name OCM121 are: CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default(…)