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New Browsers and Oracle EPM

Oracle EPM Smart Space - Thu, 2008-09-04 12:08

Whenever there are new browser technologies I am interested to see how our existing EPM products will do in them.  Right now there are 2 large browser betas first IE8 and second Google Chrome.  Both are nice browsers with rich application support but they are both betas so there are plenty of bugs.  I tried IE8 first because IE is the most popular browser and it usually does a nice job with our EPM products.

imageI was able to open Oracle EPM workspace in IE8 and logged in just fine.  The explorer screen showed up and I was able to select and open a report.  Opening the report caused a Java script error that messed up my navigation from that point on.  The script errors caused frustration but it was useable.

image

clip_image002[5]I tried the same thing with Chrome and got nowhere fast.  I got a gray screen when trying to load the logon page and it just kept trying to load...  I tried 9.3.1 to see if the older stuff was any better and it let me login and get to the explorer screen but I could not navigate.

clip_image002[7]

So the only conclusion I can come to is that for EPM products stick to supported browsers and use the betas to play with other web sites. 

Categories: Development

Indian Megavendors

Krishanu Bose - Wed, 2008-09-03 14:02

The other day i was reading an article in http://specials.rediff.com/money/2008/aug/13slide1.htm on India's top three IT companies. As per this article, Gartner has come out with a report in which they predict that, Tata Consultancy Services, Infosys Technologies, and Wipro Technologies, collectively referred as 'India-3,' will emerge as the next generation of IT service megavendors. These vendors are increasingly being considered for strategic service deals, and will augment or, in some cases, replace today's acknowledged megavendors by revenue -- IBM Global Services, Accenture and EDS -- in this space by 2011, says Gartner.

Obviously this means there will be a lot of consolidation that is bound to happen in the IT space in India, as there are a lot of tier-2 firms who cannot match the pace of growth of the top 3 firms in India. This means some of these small IT companies will be forced to sell out as the war on margins and cornering a portion of the relatively fixed marketshare will become more acute. However, for the top-3 to actually reach the levels of present generation megavendors, apart from the cost advantage, they have to position on other parameters as well. The article talks of four critical competencies on which the emerging Indian megavendors are positioning themselves.

The competencies are: process excellence; world-class HR practices; providing high quality services at a low cost; the achievement of significant and disproportionate 'mind share' compared to their actual size.

However, the catch is to continue providing high quality services at a low cost and yet try and increase the mind-share further. With wage bills increasing and worries over global slowdown, maintaining low cost is definitely a big challenge. However, i feel where Indian top-3 companies are critically lacking is in thought-leadership. The culture of innovation and path-breaking developments is still not visible. The present day megavendors have primarily reached this position due to a large investment in innovation and thought-leadership. Anyways, interesting times ahead for all in tough situations, and obviously only the toughest will survive and prosper.

ORA-23375 when adding new master site in multi-master environment

Mihajlo Tekic - Sun, 2008-08-31 17:58
If your database global name contains a word that belongs to the list of Oracle Database Reserved Words and you are planning to add this database as a new master site in multi-master environment, you may want to consider changing the database global name so you can avoid ORA-23375 when executing DBMS_REPCAT.ADD_MASTER_DATABASE procedure.

This is especially important for those databases that have their global name containing country internet code of any of the following countries: Austria (AT), Belarus (BY), India (IN), Iceland (IS), etc. AT, BY, IN, IS are among the database reserved words.

You may experience problems even before you try to add the new master site. The creation of the database link to the new master site may fail with:
ORA-02084: database name is missing a component
However, you may not get this error in some cases, for instance when AT keyword is used; or if you put the database link name in double-quotes.

(the environment used in the examples below is DB1.MYDOMAIN.COM(master definition site, release 10.2.0.2) and DB11G.MYDOMAIN.IN (master site, release 11.1.0.6))

SQL> create database link DB11G.MYDOMAIN.IN
2 connect to rep_admin
3 identified by “rep_password”
4 using 'DB11G';
create database link DB11G.MYDOMAIN.IN
*
ERROR at line 1:
ORA-02084: database name is missing a component

SQL> create database link "DB11G.MYDOMAIN.IN"
2 connect to rep_admin
3 identified by "rep_password"
4 using 'db11g';

Database link created.

SQL> create database link DB11G.MYDOMAIN.AT
2 connect to rep_admin
3 identified by "rep_password"
4 using 'DB11G';

Database link created.



But, even if the database link creation succeeds, the attempt to add the new master site would definitely fail with:
ORA-23375: feature is incompatible with database version at global database name


SQL> begin
2 dbms_repcat.add_master_database(
3 gname=>'TEST_GROUP',
4 master=>'"DB11G.MYDOMAIN.IN"',
5 use_existing_objects =>true,
6 copy_rows =>false,
7 propagation_mode=>'ASYNCHRONOUS');
8 end;
9 /
begin
*
ERROR at line 1:
ORA-23375: feature is incompatible with database version at DB11G.MYDOMAIN.IN
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.DBMS_REPCAT_MAS", line 2159
ORA-06512: at "SYS.DBMS_REPCAT", line 146
ORA-06512: at line 2


SQL>

SQL> begin
2 dbms_repcat.add_master_database(
3 gname=>'TEST_GROUP',
4 master=>'DB11G.MYDOMAIN.AT',
5 use_existing_objects =>true,
6 copy_rows =>false,
7 propagation_mode=>'ASYNCHRONOUS');
8 end;
9 /

begin
*
ERROR at line 1:
ORA-23375: feature is incompatible with database version at DB11G.MYDOMAIN.AT
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.DBMS_REPCAT_MAS", line 2159
ORA-06512: at "SYS.DBMS_REPCAT", line 146
ORA-06512: at line 2

If you turn 10046 trace event you can notice that the error occurs when DBMS_REPCAT_RPC.REPLICATION_VERSION_RC and DBMS_REPCAT_UTL2.REPLICATION_VERSION procedures are invoked against the new master database.

PARSE ERROR #39:len=73 dep=1 uid=61 oct=47 lid=61 tim=1191209094695404 err=6550
BEGIN sys.dbms_repcat_rpc.replication_version_rc@DB11G.MYDOMAIN.IN (:rv);END;
=====================
PARSE ERROR #39:len=72 dep=1 uid=61 oct=47 lid=61 tim=1191209094702737 err=6550
BEGIN sys.dbms_repcat_utl2.replication_version@DB11G.MYDOMAIN.IN (:rv);END;

To solve this problem the global name of the new master database should be changed. Once the global name is changed to value that does not contain any reserved word, you should be able to add the database to the replication environment.

In the example below, I will try to add a new master site which global name was changed to DB11G.FOO.BAR

SQL>conn sys/***@DB11G as sysdba
Connected.
SQL> alter database rename global_name to DB11G.FOO.BAR;

Database altered.

SQL> conn rep_admin/rep_password@DB1
Connected.
SQL>
SQL> create database link DB11G.FOO.BAR
2 connect to rep_admin
3 identified by "rep_password"
4 using 'DB11G';

Database link created.

SQL> begin
2 dbms_repcat.add_master_database(
3 gname=>'TEST_GROUP',
4 master=>'DB11G.FOO.BAR',
5 use_existing_objects =>true,
6 copy_rows =>false,
7 propagation_mode=>'ASYNCHRONOUS');
8 end;
9 /

PL/SQL procedure successfully completed.


SQL> column dblink format a30
SQL> select DBLINK, MASTERDEF, MASTER
2 from dba_repsites;

DBLINK M M
------------------------------ - -
DB1.MYDOMAIN.COM Y Y
DB11G.FOO.BAR N Y

There are few ways to find Oracle PL/SQL reserved words:
  1. V$RESERVED_WORDS

  2. Oracle documentation (PL/SQL Reserved Words and Keywords). Check your version specific documentation available on http://tahiti.oracle.com

  3. Issue HELP RESERVED WORDS (PL/SQL) from Sql*Plus (if Sql*Plus help is installed).

Importing Payments and Paid Invoices into Oracle - Oracle needs to provide an API

Krishanu Bose - Sun, 2008-08-31 11:35
How many of us had a requirement of importing paid invoices and their corressponding payment details to Oracle? I would say many. But strangely till date there in no straight forward method to import payments into Oracle. I feel its time that Oracle comes up with a standard process like an API to handle this business need.
There are a few workarounds to this scenario. A direct update of Oracle base table is one but this comes with the risk of losing support from Oracle.
The other, more robust way would be to use the manual payment feature of Oracle to record such payments that have been already done in the earlier system. However, automating this process using a batch program is a challenge.
Do put in your comments in case you have a soultion to this problem which would help a lot of people out there.

cx_Oracle and DBMS_APPLICATION_INFO

Sergio's Blog - Fri, 2008-08-29 05:51

Here's another post from the old blog, harvested from archive.org

The other day I was playing with some Python and cx_Oracle, a Python module for connecting to Oracle databases. While cx_Oracle seems to work great, I found the documentation light on examples. Because I follow Tom Kyte's advice closely, I was trying to instrument my code with some calls to DBMS_APPLICATION_INFO. As it turns out, the cx_Oracle connection object has write only attributes to set module, action, and clientinfo.

Here's a quick example of that in action (warning: newbie Python ahead)

-bash-3.00$ python
Python 2.3.4 (#1, Feb  2 2005, 11:44:49) 
[GCC 3.4.3 20041212 (Red Hat 3.4.3-9.EL4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cx_Oracle
>>> con=cx_Oracle.connect ("hr/hr")
>>> cur=con.cursor()
>>> con.module="python module"
>>> con.action="some big query"

>>> cur.execute ("select 1 from dual")
[<cx_Oracle.NUMBER with value None>]
>>> con.action=""
>>> con.module=""
>>> con.close()

Before closing the connection with con.close(), this is what was observed in the database:

SQL> select sid, module, action from v$session where module is not null 
  2  /
       SID MODULE                                           ACTION
---------- ------------------------------------------------ --------------------------------
        22 sqlplus@captain.us.oracle.com (TNS V1-V3)
        26 python module                                    some big query

Categories: DBA Blogs

Out Now!! Application Express 3.1.2

Anthony Rayner - Fri, 2008-08-29 02:21
APEX 3.1.2 is now available for download and fixes the following bugs. You can get hold of it by either:
  • Downloading the full version from OTN.

  • Download the patchset 7313609 from METALINK.
If your unsure about which download you need, please read Joel's blog. As Joel says, if your upgrading from any APEX version pre-3.1, then you'll need to use the full OTN release (which includes the version that comes pre-installed with 11gR1).

For details on future plans, please take a look at our Statement of Direction, which was updated just under 3 weeks ago with details of the 'Forms Converter' of APEX 3.2 and 'Websheets', 'Updateable Interactive Reports', 'Extensible Item Framework' and much more of APEX 4.0.

Happy patching!
Anthony.

Categories: Development

travelling trace file

Claudia Zeiler - Thu, 2008-08-28 15:23
I just noticed a detail that I don't like.

We had an error logged in the alert log. It informed me that details were in
db_ckpt_1234.log. Fine, but there was no such log in the bdump directory.

The dba who was here before me wrote a nice script to run every Sunday to clean up old trace files. What he didn't think of is that the trace files seem to be written per session, and that the checkpoint 'session' continues from instance start up.
His script came along and happily moved the trace file to a backup_bdump directory. Oracle couldn't find it and didn't write the details.

One more fix to make.

oracle-validated RPMs now available outside of ULN

Sergio's Blog - Thu, 2008-08-28 09:10

For those of you who'd like to use the oracle-validated RPM, but don't have access to ULN, here they are:

Categories: DBA Blogs

My Current Development Environment

Mark A. Williams - Wed, 2008-08-27 20:54

Whilst I am primarily a DBA during the day, one of the things that I really enjoy about my current engagement is that it has given me the opportunity to dip my toes back in the development pool a bit. I was describing my current development environment to a friend recently and this person was shocked by the details. I realize that in this day and age of code spitters (term coined by Jeff Richter?) and "click through the wizard for instant coding success" sorts of activities that this environment is something of an anachronism.

Without further ado, the o/s:

$ uname -a
HP-UX zzz B.11.31 U ia64 4131905082 unlimited-user license

My "IDE":

$ which vi
/usr/bin/vi

And the compiler:

$ gcc -v
Using built-in specs.
Target: ia64-hp-hpux11.31
Configured with: ../gcc/configure
Thread model: posix
gcc version 4.2.1

Yes, I actually have to do things like create a Makefile in such an environment!

Joking aside though, one of the things that I firmly believe is that instrumented code is better code. One of the characteristics of this kind of development environment, I feel, is that it really encourages strongly instrumenting the code. Yes, in some circumstances I could use the gdb debugger, but building proper instrumentation into the code and offering a simple switch to enable it (yes, it is in the release build) works very nicely.

Another thing that some people might find "weird" about this application is that it is a database application (Oracle of course) that contains absolutely no SQL statements. Really. It is a "thick database" application (Toon Koppelaars term?). That is, there are many statements like "begin package.procedure...; end;" in the code. All the real work is done using PL/SQL packages (and bodies) in the database.

As a .NET developer it is often easy to lean heavily on Visual Studio for debugging, but I think Microsoft also agrees with the "instrumented code is better code" philosophy - check out the System.Diagnostics.Trace class in the Visual Studio Combined Help Collection for more information.

Lastly, if I've misappropriated any of the terms above, apologies!

Batch Invoice Uploads into Oracle Payables

Richard Byrom - Sat, 2008-08-23 20:09

MS Excel to load invoice batches to Oracle Payables! Even Oracle ADI doesn’t do that, in fact few 3rd-party products do. What to do? Do as Kevin Ellis has done, develop your own in-house invoice batch interface. And if that isn’t enough to pique your interest, how about an interface for keeping your chart of accounts current between production legacy and Oracle systems? He has done that too and he has shared all in this comprehensive ORAtips cover story, discussing custom concurrent program and UNIX shell script development, Oracle Applications set-up and end-user considerations.

Download White Paper on Invoice Uploads into Oracle Payables

This article was originally published by Klee Associates, Inc., publishers of JDEtips and SAPtips. For training, consulting, and articles on JD Edwards or SAP, please visit their websites: www.JDEtips.com and www.SAPtips.com.

Oracle OpenWorld 2008 - Just Say Hi!

Mark A. Williams - Fri, 2008-08-22 20:35

Just a quick note... if you happen to be coming to Oracle OpenWorld 2008 in San Francisco, I will be helping out in the .NET Hands-On Labs Monday (22 Sep) afternoon. I'll also be at the "OTN ACE Office Hours" on Monday (22 Sep) as well as Thursday (25 Sep). See the link for schedules as well as the great folks who will be available. I've also been known to be around the demo grounds booth as well. Please say "hi" if you get the chance!

Data Mining in Action: Oracle Sales Prospector

Marcos Campos - Fri, 2008-08-22 12:10
I firmly believe that a major trend in applications is the incorporation of analytic-enabled functionality. Users want more than just reports or a replay of the past. Users want to have insights and their attention directed to key points. This is where analytics can make a big impact across all types of applications. Notice that I am not proposing exposing analytical capabilities (e.g., data Marcoshttp://www.blogger.com/profile/14756167848125664628noreply@blogger.com2
Categories: BI & Warehousing

Oracle Transparent Gateway for MS SQL Server - Part II

Aviad Elbaz - Fri, 2008-08-22 08:28

Following my last post about Oracle Transparent Gateways which was theoretical post, this post will be more practical.

In this post I'll show an example of configuring Oracle Transparent Gateway for MS SQL Server.
The goal is to make it possible to retrieve data from MS SQL server database by querying from Oracle database.

The steps are:

  1. install Oracle Transparent Gateway for MS SQL Server (not explained here)
  2. Configure the gateway initialization parameter file
  3. Configure the listener
  4. Configure the Oracle database tnsnames.ora
  5. Creating DB link from Oracle database to MS SQL Server

In my environment there are 3 servers involved:

  1. Oracle database server - name: orclsrv01, with Oracle database installed name: orcldb
  2. Microsoft SQL server - name: msqlsrv01, with MS SQL server installed name: msqldb
  3. Oracle Gateway server - name: oragwsrv01, with Oracle Transparent Gateway installed.


Configure the gateway initialization parameter file

After Oracle Transparent Gateway for MS SQL server installed on ORAGWSRV01 server, a new default initialization file is created at: $ORACLE_HOME\tg4msql\admin\inittg4msql.ora.

$ORACLE_HOME - is the directory where Transparent Gateway installed.
inittg4msql.ora - is the default initialization parameter file, as tg4msql represents the Gateway SID.
If you choose to not use the default SID (or when you have more than one MS Sql server to connect to), the initialization parameter file should be named as follow: init[GW_SID].ora

Edit the inittg4msql.ora file and specify the MS Sql Server connection details as follow:
HS_FDS_CONNECT_INFO=server_name.database_name

in our case:
HS_FDS_CONNECT_INFO=msqlsrv01.msqldb

Alternatively you can set it as follow:
HS_FDS_CONNECT_INFO="SERVER=msqlsrv01; DATABASE=msqldb"

Configure the listener

In order to make the listener work with the gateway we should configure it.
The listener have to be on the same server like the Gateway.
We should edit the listener.ora within the Oracle home on which the Gateway installed.

The listener.ora must have at least 2 entries:

  • The address to listen on
  • the Gateway to start

On ORAGWSRV01 server at $ORACLE_HOME\network\admin edit the listener.ora as follow:

LISTENER=
               (ADDRESS=
                   (PROTOCOL=TCP)
                   (HOST=host_name)
                   (PORT=port_number))

SID_LIST_LISTENER=
      (SID_LIST=
           (SID_DESC=
                 (SID_NAME=gateway_sid)
                 (ORACLE_HOME=oracle_home)
                 (PROGRAM=tg4msql)
           ) 
      )

Where:
host_name - is the server name on which the gateway is installed
port_number - is the listener port
gateway_sid - is the gateway SID (default is tg4msql)
oracle_home - is the Oracle directory on which the gateway is installed

In our case:

LISTENER=
              (ADDRESS= 
              (PROTOCOL=TCP)
              (HOST=oragwsrv01)
              (PORT=1521))

SID_LIST_LISTENER=
      (SID_LIST=
          (SID_DESC= 
               (SID_NAME=tg4msql)
               (ORACLE_HOME=C:\oracle\product\10.2.0)
               (PROGRAM=tg4msql)
          )
      )

After finishing the Gateway configuration, restart the listener (lsnrctl stop; lsnrctl start).

Configure the Oracle database tnsnames.ora

Now, when the Gateway configured, we need to configure the Oracle database server to communicate with the Gateway via Oracle Net services.
On ORCLSRV01 server at $TNS_ADMIN ($ORACLE_HOME/network/admin) edit the tnsnames.ora file and add the Gateway's connect descriptor as follow:

connect_descriptor=
   (DESCRIPTION=
      (ADDRESS=
         (PROTOCOL=TCP)
         (HOST=host_name)
         (PORT=port_number)
      )
      (CONNECT_DATA=
         (SID=gateway_sid))
      (HS=OK))

Where:

connect_descriptor - you can specify a name which will be used later when we create a db link
host_name - is the server on which the Gateway installed
port_number - is the port used by the listener that listening for the Gateway
gateway_sid - is the gateway SID (default tg4msql)
HS=OK - indicates this connect descriptor is using heterogeneous Services

In our case:

mytg4msql=
   (DESCRIPTION=
      (ADDRESS=
         (PROTOCOL=TCP)
         (HOST=oragwsrv01)
         (PORT=1521)
      )
      (CONNECT_DATA=
         (SID=tg4msql))
      (HS=OK))

Creating DB link from Oracle database to MS SQL Server

Now, when all configurations were done, we only need to create a Database Link from Oracle to the Gateway.
Connect to orcldb database and create a db link as follow:

create database link ORCLDB2MSQLDB
  connect to [MSQLUSER] identified by [MSQLPWD]
  using 'mytg4msql';

Where MSQLUSER & MSQLPWD are the user name and password to connect to the MS SQL server.

Test it...

At this stage we can get data from MS SQL Server via Oracle Database as if we query from Oracle database.

For example, if we have a RESERVATIONS table in MSQLDB, we can retrieve RESERVATIONS rows from ORCLDB by issuing the following SQL statement:

select *
from reservations@ORCLDB2MSQLDB;

For more information about Transparent Gateway for Microsoft SQL Server:
Oracle® Transparent Gateway for Microsoft SQL Server Administrator's Guide 10g Release 2 (10.2) for Microsoft Windows (32-bit)

For more information about other Transparent Gateways for other Database systems:
Oracle Database Documentation Library 10g release 2 (10.2) - Information Integration

You are welcome to leave a comment.

Aviad

Categories: APPS Blogs

NoCOUG conference 8/21/08

Claudia Zeiler - Wed, 2008-08-20 08:09
For those in the San Francisco Bay Area. The NoCoug Congerence is tomorrow Thursday 8/21. Cary Millsap is the keynote speaker. All are invited.


Summer Conference 2008
Hosted by Chevron August 21, 2008 at Chevron, San Ramon, CA


See directions to the conference location near the bottom of this page.

If you will be coming, then please RSVP online now. Remember, conference attendance is free for NoCOUG members and $40 for non-members.

8:00 - 9:00 Registration and Continental Breakfast - Refreshments Served 9:00 - 9:30 General Session and Welcome - Roger Schrag, NoCOUG President 9:30 - 10:30 Keynote: Millsap's Grand Unified Theory of "Tuning" - Cary Millsap, Method-R.com 10:30 - 11:00 Break Room 1220 Room 1240 Room 1130 11:00 - 12:00
Session 1
Case Studies in Performance Problem Diagnosis and Repair by Cary Millsap, Method-R.com Aces in the Hole: Learning Advanced SQL Techniques from the OTN Forum Pros by Greg Pike, Piocon Architecting Data Systems for Compliance by John Weathington, Excellent Management Systems 12:00 - 1:00 Lunch 1:00 - 2:00
Session 2
Getting Coherence: Introduction to Data Grids by Raanan Dagan, Oracle Data Warehousing with Oracle 11g by George Lumpkin, Oracle Corporation Building a Web-based Application Using Application Express by Willie Albino, Lockheed Martin 2:00 - 2:30 Break and Refreshments 2:30 - 3:30
Session 3
Power at Your Fingertips - Overlooked Gems in Oracle Enterprise Manager by John Sheaffer, Oracle Corporation Introduction to Java-PL/SQL Developers Take Heart by Peter Koletzke, Quovera Oracle Fusion Middleware Roadmap & Strategy by Margaret Lee, Oracle Corporation 3:30 - 4:00 Raffle
In the vendor area. 4:00 - 5:00
Session 4
A Tour of the AWR Tables by Dave Abercrombie, Convio What the Oracle Really Meant: The Quest for PL/SQL Testing Using Code Tester by Arnie Weinstein, Lawrence Livermore National Laboratory Oracle Analytical Functions - the hidden treasure by Ron Warshawsky, DBA Infopower 5:00 - ??? NoCOUG networking and happy hour at San Ramon Marriott, 2600 Bishop Dr., San Ramon, CA 94583 -- (925) 244-6171

Directions: Leaving the conference, go straight across Bollinger onto Camino Ramon. Turn left onto Bishop Drive. The Marriott is less than half a mile, on the left.
*** Walk through the bar to the outside patio. ***

Mark your calendar for NoCOUG's Fall Conference:
November 13, 2008 at CarrAmerica Conference Center in Pleasanton.

Speaker Abstracts for Spring Conference

Keynote “Millsap's Grand Unified Theory of "Tuning"” - Cary Millsap, Method-R.com


First there were the v$ and x$ views. And tkprof. Then came bstat/estat, Statspack, ASH, ADDM, OEM, and plenty of third-party tools that look kind of like those tools. There are loads of OS tools too that have been around a long time, like top and sar and strace and pstack and gprof. And then there are the methods: OPIM, and YAPP, and Method R to name three. In this presentation, Cary Millsap gives a brief tour of the moving parts and reveals his own perspective about how all these parts should fit together.

Room 1220 “Case Studies in Performance Problem Diagnosis and Repair” - Cary Millsap, Method-R.com


While we certainly learn from our own experiences, we can save ourselves plenty of time and frustration if we can learn from the experiences of others. This presentation reviews the real life experiences of professionals like you who faced some nasty performance problems and lived to tell the tale. Come experience their journeys as a spectator so that next time, when you're faced with a similar problem, you may have just the information you need to handle it with greater ease and efficiency.

“Getting Coherence: Introduction to Data Grids” - Raanan Dagan, Oracle


Grid-based infrastructures are being developed, deployed and used to achieve unlimited application scalability and continuous availability across multiple datacenters. Understanding the additional capabilities of these infrastructures and how they can be improved with the use of Data Grid technology to solve increasingly difficult and complex problems ensures that your organization is getting the maximum utility from Grid Computing.

This session focuses on how Oracle Coherence Data Grid can easily help you achieve all of these goals and more!

“Power at Your Fingertips - Overlooked Gems in Oracle Enterprise Manager” - John Sheaffer, Oracle Corporation


Today's DBA is increasingly tasked with providing greater support across the enterprise - in some cases, being stretched so thin that leveraging automated tools is your only survival mechanism. In this session, you will learn about how often overlooked features of Oracle Enterprise Manager will help you improve efficiency, lower your blood pressure, and get you home on time!

“A Tour of the AWR Tables” - Dave Abercrombie, Convio


Introduced in version 10g, Oracle's Automatic Workload Repository (AWR) provides diagnostic information for performance and scalability studies, automatically recording a rich variety of database performance statistics.

What's the best way to leverage this wealth of data? While you can run Oracle-supplied AWR reports, or use Oracle features such as the Automatic Database Diagnostic Monitor (ADDM), each Oracle database presents its own unique tuning challenges. In this session you'll learn how to work directly with AWR tables, using customized queries to improve insight into your own particular scalability issues.

Topics include:

  • Important AWR tables, their contents, how to join them, and their quirks and limitations.
  • Sample queries that can be easily adapted to focus on your own unique set of problems.
  • Estimating the "Average Active Session" metric.
  • Simple statistical techniques to find spikes and other types of anomalous behavior.
  • A comparison of techniques used for historical scalability studies with those used for real-time performance crisis resolution..
  • Use of DBMS_APPLICATION_INFO and JDBC end-to-end metrics.
  • Useful tips on configuring AWR.
Room 1240 “Aces in the Hole: Learning Advanced SQL Techniques from the OTN Forum Pros” - Greg Pike, Piocon


Although seasoned professionals understand the benefits of solving business problems with efficient queries or PL/SQL, the volunteer experts and Oracle Ace contributors on OTN's SQL and PL/SQL discussion forums raise the query writing bar to an entirely new level. Oracle professionals at any skill level will find this forum packed with a treasure chest of tips, tricks and techniques. With over 60,000 topics and 325,000 posts, it's the mother lode of SQL and PL/SQL education from recognized experts worldwide.

In this session, the powerful techniques of advanced query authoring are explored by reviewing real-world forum threads and the unique solutions posted by the gurus. The resident experts from the OTN forums solve problems using a combination of analytic functions, hierarchical queries (CONNECT BY), collections (COLLECT ), XML functions/operators (SYS_XMLGEN, and XMLSEQUENCE), Pipelined Functions, the MODEL clause and more.

“Data Warehousing with Oracle 11g” - George Lumpkin, Oracle Corporation


Satisfying business intelligence requirements for all users throughout the enterprise requires a fast, reliable and scalable data warehouse to protect and maintain quality business information. Come learn why Oracle is the #1 database for data warehousing, why Oracle Warehouse Builder is the best tool for building data warehouses, how ground-breaking new features in Oracle Database 11g will dramatically speed query performance, and, how you can accelerate data warehousing deployments.

“Introduction to Java-PL/SQL Developers Take Heart” - Peter Koletzke, Quovera


Oracle's current focus on implementing database and development features based on the Java language may have you thinking that you need to learn Java. However, if you are familiar with PL/SQL, your first view of Java may be a bit discouraging because its object-oriented core makes it look very different. Also, you may be wonder about Java's strengths and weaknesses and where it fits in the industry.

This presentation explains to PL/SQL developers who have had little or no exposure to Java, the basic concepts of, and terms used in Java. The presentation provides an overview of the language and reviews the concepts of object orientation upon which Java is based. It also discusses the fundamental Java code structures -- classes and methods -- as well as control statements; exception handling; data types; and variables. This explanation will act as a springboard for further study. Level: Beginner

“What the Oracle Really Meant: The Quest for PL/SQL Testing Using Code Tester” - Arnie Weinstein, Lawrence Livermore National Laboratory


Software developers face constant pressure to produce highly complex PL/SQL code under tight deadlines. Without an efficient and reliable way to perform thorough code testing, software is released with defects that would otherwise be eliminated. Using an automated test tool carries risks that may be mitigated by certain practices. These practices greatly improved our ability to develop high quality and efficient testing software. In this paper, we will share some of these practices

Room 1130 “Architecting Data Systems for Compliance” - John Weathington, Excellent Management Systems


A gentle introduction to compliance for database system architects, and introductory concepts for the architecture that's optimal for supporting the growing need for your company's compliance.

“Building a Web-based Application Using Application Express” - Willie Albino, Lockheed Martin


Application Express is a free web application development environment that comes with the Oracle database (Oracle 9.0.3+). Using a simple web browser, you can create and deploy web-based, database-centric applications very quickly. In addition you can upload and create applications from MS Excel spreadsheets. In this session, an introduction to the Application Express environment will be provided. In addition, an application will be built from tables existing in the database, as well as data uploaded from some Excel spreadsheets.

“Oracle Fusion Middleware Roadmap & Strategy” - Margaret Lee, Oracle Corporation


With the recent acquisition of BEA, a number of best-in-class products have been added to Oracle's robust portfolio of middleware solutions. Customers are interested in knowing what Oracle's strategy and roadmap will be around protecting existing BEA customers' investments and integrating BEA products into existing Fusion Middleware solutions. This session will detail how Oracle will leverage best products from both companies to provide solutions in Java & Transaction Processing, SOA and Business Process Management, and User Interaction and Enterprise 2.0.

“Oracle Analytical Functions - the hidden treasure” - Ron Warshawsky, DBA Infopower


Oracle introduced them in 8i, but do we really use them to their full potential? Oracle analytical functional can save great deal of coding and provide amazing results very fast.

How about doing this - and this is only a beginning:

  • Ranking data within subsets of a data set.
  • Aggregating data within subsets of a data set.
  • Performing aggregations over moving windows.
  • Displaying and comparing aggregates to individual entries within a single query.
  • Comparing two or more rows within a given data set.

If you have suggestions for future meetings or would like to offer feedback on previous conferences, then please complete our online survey or send us an email.

Directions to Chevron Park in San Ramon:

Address:
6101 Bollinger Canyon Road, San Ramon, CA 94583

Please note that the conference building is just after the Chevron Campus.
Upon arrival, enter the building at the East entrance where you'll find NoCOUG representatives ready to sign you in.

From Highway 680 South:
Exit at Bollinger Canyon Road. Turn left onto Bollinger Canyon Road (heading east over the freeway). After passing Chevron Park Circle West, turn right into Bishop Ranch 1. Address 6101 is the first building after entering the parking lot. Park anywhere not restricted.

From Highway 680 North:
Exit at Bollinger Canyon Road. Turn right onto Bollinger Canyon Road (heading east). After passing Chevron Park Circle West, turn right into Bishop Ranch 1. Address 6101 is the first building after entering the parking lot. Park anywhere not restricted.
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Copyright © 2008 NoCOUG. All rights reserved.

AWR Usage Poll

Jared Still - Mon, 2008-08-18 14:04
A number of recent threads in the Oracle-L list have made it pretty clear that Automated Workload Repository (AWR) is a tool that you are expected to use when troubleshooting a database problem.

Never mind the fact that AWR is still a product that is licensed separately from the database, and that a large segment of the Oracle DBA population doesn't seem to realize that. Or that Active Session History (ASH) is part of AWR, and falls under the same license restrictions.

So I conducted a poll regarding the use of AWR. AWR Usage Poll. If you haven't in the AWR Poll, please do so.

While the web site does provide a chart of results, those results don't include the extra comments made by poll takers. You may are may not be able to download all the results, I'm not sure if that is restricted to the poll owner.

Nonetheless, I have compiled the results from a 100 or so respondents in to an Excel workbook, along with a few charts. You may find some of the additional comments of interest as well. AWR Usage Results

Draw your own conclusions regarding these results. I think it interesting to that AWR appears to be quite widely used. Personally I fall into the category of not using it because of the expense. I may work on changing that for a couple of key servers, as AWR is not that expensive, but in a small shop, spending $20k on feature that is not often needed is sometimes a hard sell.

One question I purposely left out was "Do you use AWR even though you have not licensed it"? While it might satisfy the curiosity of some (including me) I didn't want to give any Oracle sales people (or Oracle attorneys for that matter) any reasons to contact me regarding the poll.

In retrospect a good question would have been: "Did you realize AWR/ASH is a separately licensed product?". Too late to add that now, but bringing that up quite often leads to lively discussion.

Another interesting bit was that a few people have extended STATSPACK in some way, even using it on Oracle 10g+. One even mentioned the excellent repository of statspack scripts assembled by Tim Gorman. Tim Gorman's Statspack Scripts
Categories: DBA Blogs

Matrix Inversion Using PL/SQL

Marcos Campos - Mon, 2008-08-18 07:18
Recently someone asked me how to invert a matrix using the UTL_NLA PL/SQL package. This can be done by solving a system of linear equations AX = B like the ones I described in this post but setting B to the identity matrix. I thought that the question was interesting enough to deserve its own post. So I am replicating the answer here for those interested. The UTL_NLA package has many different Marcoshttp://www.blogger.com/profile/14756167848125664628noreply@blogger.com5
Categories: BI & Warehousing

Steven Chan's "Identity Crisis: Are Patches to EBS 11.5.9 Equivalent to 11.5.10?"

Madhu Thatamsetty - Sun, 2008-08-17 21:55
I was going through Steven Chan's "Identity Crisis: Are Patches to EBS 11.5.9 Equivalent to 11.5.10? - very well explained from Oracle and Support perspective for Apps customers, gave me a food for thought and hence this post of mine.From Apps DBA perspective, the way to resolve this confusion is to follow the simple checks.#1. Check the release name/Applications version using the sql .select Madhu Sudhanhttp://www.blogger.com/profile/11947987602520523332noreply@blogger.com0

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