Have a weird situation; 2 db links pointing to same user/pwd & same db, one is working and one is not, only the db link name is changed, getting this error ... any clue, how to identify, what's the problem?
ORA-02085: database link orcl2.WORLD connects to orcl.WORLD
Why doesn't the Oracle optimizer use my index?
Querying too much data
Most Oracle developers know that an index is useful when you can use it to restrict your result set to a small number of the total rows in a table.
So, the obvious side…
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
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines
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…