Have you ever had to make fundamental changes to a table in Oracle, but haven't been able to get any downtime? I'm talking things like:
* Dropping columns
* Shrinking allocated space
* Removing chained blocks and restoring the PCTFREE
I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax:
This way, I guessed, I would ensure that use…
This video shows how to copy a database user from one database to another user DBMS_METADATA. It also shows how to copy a user's permissions and discusses password hash differences between Oracle 10g and 11g.
This video shows syntax for various backup options while discussing how the different basic backup types work. It explains how to take full backups, incremental level 0 backups, incremental level 1 backups in both differential and cumulative mode a…