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1. An Introduction For Oracle DBAs
An Introduction For Oracle DBAs
My SQL is the server running a database on the vertex of your outermost vision
and you as an Oracle database administrator, must be aware of it and you must
be really good at it and you have been mentioned that this has the company’s
website and blog and all are running FOSS. This stuff was installed by another
latest young contractor. And this deal has become a great success and the
outermost vision is keeps you pondering. Oracle ceritification can make you a
great database administrator.
One day your administrator phone calls you into his workplace, “Can you just have
a simple look at that MySQL data source web server, the one with the web page
and blog on it? You know, keep it’s protection well. Shouldn’t be too challenging
for an Oracle DBA like yourself.”
Connecting to MySQL
Initially logon to the MYSQL hosting server, through ssh. The operating system
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2. used here is Linux, however most of the syntax used here are operating system
independent. Type the following:
mysql- u root
If the error message has not popped and this control seems to work, then you can
already tell factors are not as they should be. This indicates the MySQL root user
(which is nothing to do with the os main user; it is the equal to Oracle’s sysdba) is
not password-protected. This is the standard scenario and it will be explained to
you how to fix it in a few minutes.
However if there are passwords for the MySQL main customer and, if you have
been informed it, type the control below, followed by the security password when
prompted:
mysql -u main -p
You are now signed in to the mysql customer (the equal to sqlplus) and will see an
immediate, generally ‘mysql>’.
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3. Database contains
Within the mysql data base resource client, invoked above, type:
show databases;
This will show the history details involved within this MySQL server. Be aware they
are not just like detailed resource in Oracle; they are just like Oracle schemas.
One MySQL server may have many details resource. In the mysql data base
details base client you can use the phrase schema interchangeably with the
phrase details resource.
In the history of dba you will see some or all of the following traditional databases:
information_schema, mysql data base details resource, performance_schema and
analyze. Anything else will be an understanding resource supporting one of your
own applications.
To get into one of these databases:
use database_name;
To see which systems are in this database:
show tables;
and to see more detail:
show desk status;
The second line in the manufacturing of the above management is “Engine”. An
original work of MySQL (for those familiar with Oracle) is that it has many ways of
preserving details, known as storage area space search engines. The two most
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4. common storage area space search engines are MyISAM and InnoDB. MyISAM (the
traditional before to MySQL 5.5) is a very main storage area space motor (e.g. it
has table-level obtaining and moves are blocked by updates). InnoDB (the
traditional from MySQL 5.5 onwards) is more just like Oracle, providing impressive
functions such as transactions, multi-version concurrency, referential stability and
row-level rocking.
You can use SQL against the systems in an understanding resource as you would
predict, furthermore identifying a desk with its details resource name, i.e.
select * from table_name;
or:
select * from database_name.table_name;
Bear in mind that each management must end with a ‘;’ or ‘G’; the latter
displaying the results top to base, which is useful for systems with many columns.
You will also notice, by the up arrow key, that the mysql data resource client has
an order history, like the celebration invest.
To see the indexes on a table:
show index from table_name;
To see the full definition of a table:
show make desk table_name;
There are many SQL server dba institutes in Pune to make your profession in
this field.
Our Oracle Training Institute is always there for you to make your profession in
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Reviews/Oracle-Reviews
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