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The sequence of the learning ORACLE is as below:
SQL->PLSQL->architect->backup and recovery->performance
tuning->high availability.
I recommend you to learn ORACLE according to the sequence per my past experience.
Now matter whether you want to take the
certification exam or start out your first steps of DBA.
The SQL is easier than you think because it
is not procedural so you need not to tell it how to do it. What you need to tell
is only what you want to do including get data from the database, put data into
it and modify the data that is in the database.
The SQL is general language which can be
used in any relational database.
The PL SQL is procedural language of the
SQL it only can be used in the ORACLE related products.
Then you can learn the database architect.
The knowing architect will help you
understand the ORACLE better and can make the ORACLE at your disposal.
Understanding the architect will help you
troubleshoot every problem effectively.
The backup and recovery is important for a
DBA.
Knowing the backup and recovery theory and
testing out every possible scenario also will help you future understanding the
architect.
Performance tuning is more profound field
in ORACLE.
Different people has different view and
different way to do it.
The high availability is not so hard as
you think.
As long as you get the change to set it up for
several times you will find it is not mysterious as its conception implying.
Per the sequence I suggest and stick to learn it for
1000 hours.
You will master ORALE well.
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