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Tuning after a migration top Oracle 10g - Important changes
Getting a Look at 10g
By Robert Westervelt
February 10, 2004
With the Unix and Linux versions
of the Oracle 10g database now available, and
the Windows version due out in several weeks,
database administrators are clamoring to get
their hands on its automated features and new
For Oracle clients, migration to 10g is easy,
said Don Burleson, owner of Kittrell, N.C.-based
BC Oracle Consulting. Burleson has two clients
scheduled to move to 10g this month, and he'll
migrate another client soon after.
Burleson said that Oracle 9i shops can
migrate to 10g in less than an hour. (Yes,
that's right -- less than an hour.)
The migration to 10g is
most exciting for shops
that are still using
founder, BC Oracle
"The migration to 10g is most exciting for
shops that are still using rule-based SQL
optimization," he said. "When migrating to 10g,
the Automatic Database Diagnostic Monitor and
the SQLAdvisor utility quickly identifies
sub-optimal SQL statements."
Speaking to reporters during a press briefing
Tuesday, Robert Shimp, Oracle's vice president
of technology marketing, said that Oracle
developers worked hard to ensure that the
database is easy to get up and running. The
latest version of the database comes on a single
CD and takes about 10 minutes to install on a
server, he said.
"We've been focusing on the ease of
management and the ease of installation," he
said. "We can compete with any database out
there in terms of ease of use and
With Oracle's 10g grid computing concept,
companies can use a group of low-cost servers to
do the work of more expensive equipment. The 10g
grid capabilities, which are an extension to
clustering capabilities in the Oracle database,
allow several instances of the database to work
together and share the processing load with
"The impetus for moving to 10g is to take
advantage of the vastly improved Real
Application Clusters (RAC), Oracle Data Pump,
Oracle Streams, and the improved manageability
features," Burleson said.
OEM: Not for beginners anymore
Just a few years ago, many senior Oracle DBAs
detested Oracle Enterprise Manager (OEM),
Burleson said. It was viewed as a crutch for
beginners who could not memorize the command
syntax, and OEM was largely ignored by the
veteran DBA, he said.
But OEM has undergone a major overhaul in
Oracle 10g, and Oracle has invested millions of
dollars in making 10g OEM a robust product,
OEM now offers far more than simple command
generation and schema viewing. It also allows
the DBA to manage every aspect of the 10g
database, including nontraditional tasks like
applying patches and scheduling jobs.
"I've been campaigning for years ... for
developers to do something with architecture to
cut down on management issues," said Thomas B.
Cox, an Oracle DBA who works as an independent
consultant in Portland, Ore. "For me, the space
management automation is a big deal. Now, we'll
not have to worry about space needs [kicking]
out of control."
Marcel Davidson, head of data management at
Salt Lake City-based pharmaceutical company
Prolexys Pharmaceuticals Inc., has been
tinkering with 10g for about six months.
Prolexys has about 30 databases, and the company
uses them to amass data about proteins and how
"I'd like to see it mature and become really
robust with the next critical patch before we
put it into the mainstream," Davidson said.
"Eventually, we'll have a lot of things
converted over to it."
One of the company's primary goals is to
create a series of databases to support
therapeutic drug discovery and diagnostics,
Davidson said his company uses Regular
Expressions and Basic Local Alignment Search
Tool (BLAST), two features built into the
database for the first time.
Regular Expressions is a tool set that allows
the company to dig down into a database and find
patterns that almost match. The tool is also
used in the banking and finance industries.
Davidson said that there are so many new
features built into the database that it will
take time for companies to sort through them. It
will be a while before 10g is a proven product,
"When it's been in production for six months
and they say it's working, then we'll know that
they've got it," he said. "They've got to prove
it to me."