Oracle DBA related issues ?????

where can i discuss DBA related issues?
thanks

The standard tasks necessary for the SAP system are supposed to be done via the brtools which can be triggered from within the SAP system if needed.
The reason for this is that SAP does not use all of Oracle's functionalities (some may be even harming the SAP system). Therefore SAP recommends to administer the db only via the brtools to allow a safe administration taking into account the special requirements of the SAP system.
If you need to know more about the functionality of the brtools I suggest you use help.sap.com or use the SDN information given.
Kind regards,

Similar Messages

DBA related Issues

Can anyone please help me in resolving these questions?
1. A Developer call and tell you his/her process is running slow , where do you start and what you do ?
2. Oracle is running slow , what tables you start with or what tables you are going to look at inorder to resolve this problem?
Thanks

1. A Developer call and tell you his/her process is running slow , where do you start and what you do ? In first place, a developer shouldn;t be working with production, he/she might with development database, I guess. I do care much if a end-user calls and complains about the performance degradation.
If a particular process or query running slow, there are many ways to tune it. You can enable 10046 trace event, you can take the execution plan of the query and if possible tune it, you can check the wait events of the running query using v$session_wait, if you are on 10g, everything available with v$session dyanmic performance view. Perhaps, Oracle10g, has very reich feature of performance tuning.
2. Oracle is running slow , what tables you start with or what tables you are going to look at inorder to resolve this problem?It depends on the situation, like if the db complite hangs or performance unacceptably, you need to find out whether this is happening on particular time, or when there is much load on the server, or it really performs badly all the time.
I would start with taking statspack report in regular 15 min. time window to compare the db health.
Let me tell you, to use 10g, AWR, db_hist tables, you need an additional licence from ORACLE.
Jaffar

Goup by + having ERROR (Oracle DBA issue)

Hi,
I've got a very strange error and I'm very confused ...
The Db is Oracle 10 g version 10.2.0.1.0
Look at the query below :
select
sum(IMPORTO_DOVUTO) ,
sum(IMPORTO_PAGATO) ,
sum(IMPORTO_DOVUTO) - sum(IMPORTO_PAGATO) as diff,
CD_FATTURA
from
F_PAGAMENTO
where
CD_FATTURA = 'xyz' and
ID_TIPO_RIGA_PAG in (1,2,5,6)
and ID_DT_SCADENZA_FATT <= 20101231
group by CD_FATTURA
having 0 < sum(IMPORTO_DOVUTO) - sum(IMPORTO_PAGATO)
The record related to CD_FATTURA = 879802 are:
IMPORTO_DOVUTO__ IMPORTO_PAGATO___CD_FATTURA
0_________________100________________xyz
0_________________110.5______________xyz
0_________________200________________xyz
410.5_____________ 0__________________xyz
If I launch this query with the filter CD_FATTURA = 'xyz' and no records are returned.
If I launch the query without the filter CD_FATTURA = 'xyz' and in the result set I can find
1 record related to the CD_FATTURA = xyz
IMPORTO_DOVUTO______IMPORTO_PAGATO___diff___________CD_FATTURA
410.5_________________0_________________410.5__________xyz
I can't undestand the reason why it appens ... I seems a table corruption or what else ?
Many thanks,
Andrea

I posted this question in more proper forum here:
Problem with GROUPBY + HAVING clause
Here is my last post:
I've found that there is a bug with Oracle 10g related to the optimizer and the HASH GROUP BY ...
The solutions indicated on the web are 2:
1) patch the DB at least at 10.2.0.3
2) change the values of 2 parameters:
a) set optimizer_features_enable back to 10.1.0 (to use a previous optimizer)
b) set the the hidden parameter gbyhash_aggregation_enabled to FALSE
I tried to set the parameters and now it works !
But it's slower ...
Andrea

Application for the post of an ORACLE DBA

=================================================================
============
ARUNKUMAR RAGHAVAN MSc,BEd,PGDMCH,(MBA)
=================================================================
============
CURRICULUM VITAE
Covering letter
     From
Arunkumar.R, email : [email protected],
[email protected]
No 16 /9 Nagendra nagar,
Velachery main road, checkpost,
Near jaya hospital,
Chennai -600 042.
Respected Sir / Madam,
SUB : Application for the post of
ORACLE DBA / DBO - Reg
I wish to submit the following few lines for your kind
consideration.
I feel more comfortable and satisfactory with this type of job
as
I am keen to serve as an employee of your esteemed organization,
which has an intellectually stimulating and emotionally
satisfying environment.
I assure that, I will do my duty to the fullest satisfaction of
my
higher officials, colleagues and to the best of my knowledge and
belief.
I am attaching my CV, first 2 pages of my first book –“ORACLE
ARCHITECTURE MADE EASY”, and a newsletter about Penta Media
Graphics Ltd, my present employer.
Expecting the favour of your earliest reply.
Thanking you with respectful regard,
Yours truly,
(ARUNKUMAR.R)
=================================================================
============
CAREER OBJECTIVE
1.     To be a dependable ORACLE DBA and to deploy an
efficient DATA WAREHOUSE and DATA MART.
2.     To write unique books on ORACLE DBA and DATA WAREHOUSING
for enthusiastic learning
Experience summary
q     Five years and six months of overall experience in
Software Industry.
q     Over 24 months of work experience in the administering,
and maintaining the Oracle Database of sizes 3 GB
q     Training and authoring books, CBT’s,WBT’s for Oracle DBA
and
Data Warehousing .
Technical skills
Hardware               IBM PC, MAC
Operating Systems          WINDOWS NT, 95/98/2K, MS-DOS,
LINUX, MAC-OS
RDBMS                    ORACLE 8I, DBASE, FoxPro,
MSACCESS
Internet Tools          HTML, IIS, FrontPage
Responsibilities at PENTAMEDIA GRAPHICS LTD,
(formerly known as PENTFOUR SOFTWARE EXPORTS LTD, SEI-CMM LEVEL
4 COMPANY )
1. Maintaining an "Oracle Pre-Production Database" of size 3 GB.
2. In charge of the CBT's on Data Warehousing & ORACLE
DBA.
3. Installing and upgrading the Oracle server (Oracle 7.3,
Oracle 8.0,
     ORACLE 8i,) and application tools.
3.     Allocating system storage and planning future storage
requirements
for the database system.
5. Creating Tablespaces for the different group of
projects namely
     SOFTWARE, ENGINEERING, MANAGEMENT, and SCHOOL PROJECTS.
6. Creating tables, views and modifying the database
structure, as
     necessary, required by Project Leaders and Programmers.
7. Enrolling users and maintaining system security and
controlling and
     monitoring user access to the database.
8. Backing up and restoring the database.
Specific Achievements
1. CBT's and WBT's authored (Reference:
www.pentalearn.com )
* Data Warehousing for beginners
* Data Warehousing - Intermediate
* Stepping into ORACLE DBA
* ORACLE DBA - Security
* ORACLE DBA - Backup & Recovery
* Step by Step - ORACLE DBA
* OCP GUIDE - Architecture & Administration
Under Production
* OCP GUIDE - Backup & Recovery
     2. Book's authored (Under compilation)
* ORACLE ARCHITECTURE MADE EASY.
* Learn ORACLE DBA in 23 days.
4.     Knowledge of documentation and procedures for SEI CMM -
ISO –
     QUALITY AUDITS.
4. Academic Project - (Reference: [email protected])
o Title           ORACLE QUESTION BANK
o Outline           Training software for OCP
               (Oracle Certified Professional)
o Period           DEC 1998 - JAN 1999
o Software           VB 5.0, M.S.ACCESS
     5. Awards :
State first & district first in Vivekananda Academy
of cultural
Studies
=================================================================
============
Employment History
     1. Company Name           :     Pentamedia
Graphics ltd
Title          :     instructional designer
Level           :     Senior Executive
Specialization :     IT/Computer Systems/Software
Function      :     Professional /
Consultant / Specialist
Industry :     Computer / Information
Technology (Software)
Date Joined :     12 oct 1999
Duties           :     Responsible for CBT’s,
WBT’s on DATA
                    WAREHOUSING & ORACLE DBA.
                    project guide for TEAM
members.
                    Developed 5 training
software.
                    Maintaining "ORACLE-
PRODUCTION DATABASE"
                         of size 3GB.
Reason for leaving:     working currently
2. Company Name      :     S.A.International ltd
Title           :     training officer
Level           :     Senior Executive
Specialization :     IT/Computer Systems/Software
Function      :     Lecturer / Teacher /
Trainer
Industry :     Computer / Information
Technology (Software)
Date Joined :     08 Aug 1997
Date Left      :     09 Sep 1999
Duties :     At S.A.INTERNATIONAL LTD,(A joint
venture company of ELCOT, GOVT OF TAMILNADU UNDERTAKING)
Responsible for all training programmes.
                         Project guide
for all college students.
                    Senior Faculty
for "ORACLE DBA" classes.
Accomplishment :     Wrote student guides on office
2000                               and on ORACLE DBA
                    Developed 3 training
software.
Reason for
               leaving      :     To get more
experience on ORACLE DATABASE
                    MAINTENANCE
3. Company Name      :     G.K.M.college of
engineering & technology
Title           :     lecturer
Level           :     Junior Executive
Specialization      :     Education
Function      :     Lecturer / Teacher /
Trainer
Industry      :     Education
Date Joined :     06 May 1996
Date Left      :     09 Aug 1997
Duties           :     Incharge of computer
science department,
                    Conducting classes and
all academic
     activities.
Accomplishment :     Wrote 2 student guides on office
1997                                    and on
ORACLE DBA.
Reason for
               leaving      :     To get more
experience on ORACLE DBA
                    Activities
4. Company Name      :     Infra computers pvt ltd
Title           :     Asst.technical manager
Level           :     Junior Executive
Specialization :     Training & Development
Function      :     Executive
Industry      :     Computer / Information
Technology
Date Joined :     30 Apr 1995
Date Left      :     06 Jun 1996
Duties           :     Monitor the day to day
operations of the
SOFTWARE/HARDWARE SERVICE DEPARTMENT. Monitor the DEPARTMENT
STOCK and cash flow position, Meeting executives for Business
development activities
Accomplishment :     Joined the Company since August 1994
as Asst TECHNICAL MANAGER. Promoted to TECHNICAL MANAGER in july
1996.
Reason for
               leaving      :     To study M.B.A
(master business
                    Administration)
ORACLE DBA SKILLS SELF EVALUATION FORM
Oracle: SQL and PL/SQL Skills:
                                   rate
from
                              0 = None
through 5 = Guru
Creating and maintaining database objects               3
Store, retrieve, and manipulating data               3
Create PL/SQL blocks of application code               1
Familiarity with PL/SQL packages                    1
Familiarity with PL/SQL tables and records          0
Calling PL/SQL functions from within SQL statements     0
Building reusable code
     0
Crafting code that automatically adapts to changes
     in data structures
     0
Writing SQL inside PL/SQL programs
     0
Reading and writing operating system files          3
Executing host commands and C programs               0
Issuing database alerts
     1
Analyzing memory utilization in your session          2
Debugging and tracing program execution               1
Manipulating raw data and large objects               1
Building your own packages
     1
Oracle Enterprise Manager Skills:
                                   rate
from
                              0 = None
through 5 = Guru
Install Oracle Enterprise Manager                    5
Administer and monitor Oracle database environments     5
Oracle Enterprise Manager architecture               3
Setup a console for your own environment               3
Implement job and event based system management          3
Understand the integration of shared administrator
     responsibilities
          3
     Tuning Pack
     1
(which comprise Oracle Expert, Tablespace Manager
          and SQL Analyze)
Diagnostic Pack
     0
(which comprise Oracle Trace and Data Viewer,
     Performance Manager,
Capacity Planner,and Top Sessions)
Change Management Pack
     0
(which comprise Database Alter, Capture, Diff,
     Propagate, Quick Change, and Plan Manager)
Database Administration/ Backup and Recovery Skills:
                                   rate
from
                              0 = None
through 5 = Guru
Familiarity with Oracle7 database environments          5
Familiarity with Oracle8 database environments          5
Set up, maintain, and troubleshoot database          4
Plan and implement database backup and recovery
     strategies
          4
Understanding of backup, restore and recovery
     operations
          4
Oracle8 Recovery Manager                         4
Network Administration Skills:
                                   rate from
                              0 = None
through 5 = Guru
Familiarity with Oracle7 Server                    5
Familiarity with Oracle8 Server                    5
Familiarity with architecture of Net8               4
Establishing connections between peers               5
Client and a server node using various
     naming methods
     4
Configuring middle tier systems                    0
Familiarity with Names Server
     1
Familiarity with Connection Manager
     3
Memory, I/O, physical structure and
resource contention                         2
Familiarity with dynamic performance views          4
Familiarity with initialization parameters          5
Familiarity with diagnostics and tuning guidelines     3
Data Modeling and Relational Database Design Skills:
                                   Arun's
rate from
                              0 = None
through 5 = Guru
Knowledge with entity-relationship models               2
Knowledge of normalization and relational
     database design
     1
Defining business information requirements          3
Creating entity-relationship models
     3
Transforming requirements into an initial
     database designs
          3
Personal Strengths :
          INVOLVEMENT alone gives PERFORMANCE. With my
spiritual base &
     MOTIVATION, I am confident that I will reach the
pinnacle
in the field of ORACLE DBA. I hope my right thinking &
Hardworking nature will make me successful.
Current Communication Address
          Address :     16/9, nagendra nagar, velachery
main road,
               near jaya hospital, chennai-42
               chennai, 600042 India
Tel [home]      :     91-44-2552406
Tel [office]:     91-44-4839854
Tel [mobile]:
     Email     :     [email protected],
[email protected]
Permanent Address
     Address      :     s/o N.Raghavan, laksminayackan
patty(po)
               thevaram(via), theni(dt), pin
625530
               laxminayakan patty,
               625530 India
Tel      :     91-4454-54739
Email     :     [email protected], [email protected]
Personal Particulars
Date of Birth           :     05 Aug 1971
Gender                :     Male
Nationality           :     India
Marital Status           :     married
     Permanent Residence of     :      India
          Passport Number          :     T465022
          Valid Upto                    Jan 2005
EDUCATIONAL QUALIFICATION
COURSE      UNIVERSITY/BOARD           Yr.of PASSING
     CLASS & %
S.S.L.C      TAMILNADU SECONDARY           MAR 1986
     FIRST 85.40
H.S.C      TAMILNADU HIGER SECONDARY     APR 1988
     FIRST 68.90
B.Sc           MADURAI KAMARAJ UNIVERSITY      APR 1991
     FIRST 68.63
(PHYSICS)      VIVEKANANDA COLLEGE
M.Sc           MADURAI KAMARAJ UNIVERSITY     APR 1994
     FIRST 70.40
(PHYSICS)
BEd           MADURAI KAMARAJ UNIVERSITY      NOV 1995
     SECOND 52.20
TECHNICAL QUALIFICATION
COURSE           UNIVERSITY/INSTITUTION           Yr.of
PASSING %
PGDMCH#           St.JOSEPH'S COLLEGE           JULY
1995 59.70
               BHARATHIDASAN UNIVERSITY
DPCS*           @ DOE & TC.T.S- NCVT TRADE      SEP 1996
79.47
               (AICTE^ APPROVED)
# POST GRADUATE DIPLOMA IN MICROPROCESSOR AND COMPUTER
HARDWARE
* DATA PREPARATION AND COMPUTER HARDWARE
@ DIRECTORATE OF EMPLOYMENT & TRAINING CRAFTSMEN TRAINING
SCHEME
^ ALL INDIA COUNCIL OF TECHNICAL EDUCATION
PROFESSIONAL
TRAINING UNDERGONE
Completed 'ORACLE DBA' Course at RADIANT SOFTWARE PVT LTD,
WEST MABALAM,
CHENNAI -33.
Language Proficiency :
Languages -          Proficiency (1=worst - 10=best)
                    Spoken
     Written
English          5                    6
Tamil               9
     9
Supplementary
If and when employed by the company
Willing to Travel               :          yes
Willing to be Relocated          :          yes
Possess Own Transport     :          T465022 Valid
Upto                    Jan 2005
Expected Monthly Salary          :
     Negotiable
Availability               :
     Immediately
=================================================================
============

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Select: iTunes Store
Click OK.

Are the oracle DBa's seeing an end to their career

It's been 2-3 years i am working as an oracle dba in a mid range shop and i was pretty happy with it. After having the satisfaction , I was always worried about the future of an oracle dba. I always heard sql server and db2 are much much better than oracle as they are less complex to administration and their cost is less. Though the oracle people would talk about performance and scalability but with the recent releases , those db have overcome those problems. The problems for oracle dba are coming from several ways:
1.Companies are shifting for sql server or db2 as for low cost and low required of man power.
2.Oracle itself becoming automated.
3. Company like IBM offering main frame solution with free db2 database for the entire data center.
4.With the concept of Cloud computing storage would be third party location , where few employee can take the responsibility.
And..many moreeee...
It gives me a COLD feelings what would i be doing in 3-5 years from now and how could a dba would evolve himself with the change??? I hope this time i am not right.. all the points that i showed is wrong...
Regards,

user11181920 wrote:
In next N years ultimately everything in RDBMS will be automated.
This is a common trend and Oracle is leading flagship in it.
Ultimate goal, as I see, is to eliminate DBA, minimizing cost of ownership.
This will attract business to such products - self-managed software.
I do not see it to happen tomorrow, though. But it is going there.
Yeah, well 30 years ago the experts were predicting the end of the need for programmers (the old term for 'developers'). "End User Computing" would put the power in the hands of the business users and eliminate the entire IT department. No I'm not exaggerating. That was the prediction. And people like you were insisting it would come to pass.
You don't even have to go that far. Look at the predictions for the 'paperless office' . . .
Many here will argue with me, but look of the definition of DBA
http://sqldbpool.com/2008/12/22/dba-roles-and-responsibilities/
>
DBA Responsibilities
Installation, configuration and upgrading of Microsoft SQL Server/MySQL/Oracle server software and related products.
Evaluate MSSQL/MySQL/Oracle features and MSSQL/MySQL/Oracle related products.
Establish and maintain sound backup and recovery policies and procedures.
Take care of the Database design and implementation.
Implement and maintain database security (create and maintain users and roles, assign privileges).
Database tuning and performance monitoring.
Application tuning and performance monitoring.
Setup and maintain documentation and standards.
Plan growth and changes (capacity planning).
Work as part of a team and provide 7×24 supports when required.
Do general technical trouble shooting and give consultation to development teams.
Interface with MSSQL/MySQL/Oracle for technical support.
ITIL Skill set requirement (Problem Management/Incident Management/Chain Management etc)
>
Well, that's ONE "definition" of a DBA. It's far from "the" definition.
I'll tell you what. I've actually sat on committees that drew up lists like that. I can tell you first hand that while a lot of things on the list may look legit, there is also a lot of pressure just to fill up the list with as many things as possible in order to justify head count to the bean counters. You could just as well add 'weekly cleaning of the left-hand smoke shifter.'
Then lets look at them one by one:
Installation, configuration and upgrading of Microsoft SQL Server/MySQL/Oracle server software and related products.How often Installation happens? Once for one new app. Usually app vendors have recommendations that DBA should follow. So, what is DBA's role here? Start installer and to follow.
Configuration and upgrading will be more and more automated.
Except the app vendor left out critical details they didn't think were critical because they don't understand the database. Or have bogus 'requirements' because they don't understand the database. Or their recommendations were based on how they did it in their pristine development lab and they never even knew about critical dependencies that might not exist outside of their lab.
Week before last I spent 50 hours working on installing a new database based on the app vendor's specifications ....
Evaluate MSSQL/MySQL/Oracle features and MSSQL/MySQL/Oracle related products.Again, how often? When new App is about to be created and designers need to choose which DB they will need.
And then they proceed to develop on rdbms-A using best practices they learned from rdbms-B -- which turn out to be worst practices on rdbms-A. And only when they go live do they discover that their design doesn't scale because they tried to re-invent (poorly) functionality built into the database.
Establish and maintain sound backup and recovery policies and procedures.Again, how often yo need to establish policies and procedures? Every time you put in a new app with a different SLA.
Backup itself is 100% automated already today. Only if you buy off on the lowest common denominator.
Recovery is close to 100%.Oh? Go spend some time in the RMAN forum ...
And even if it were close to 100%, 'close' only counts "when playing horseshoes or hand grenades."
Most of enterprise backup software support backup and recovery of major RDBMSs.
Just specify a date "from" and click Go.
A little bit complex with RMAN. You have to type(!) RESTORE DATABASE; RECOVER...
Until the cause of failure was something the automation didn't anticipate. Or you then discover that your 100% automated-out-of-the-box backup didn't work the way thought it did. Oh, it 'worked' all right. Just not the way you thought it did.
Take care of the Database design and implementation.Where? Only in development shops.
Depends on what you mean by 'database design and implementation'. And most companies have some sort of development, even if they don't recognize it or call it that.
Implement and maintain database security (create and maintain users and roles, assign privileges).Centralized enterprise security (Domain etc) are in use. Many apps have their security and use basic RDMS security to login App running user.
Until such time as "nothing changed" but "I can't connect to my database".
Database tuning and performance monitoring.Greatly automated. Ultimately will be 100% automated.
Until it's not. See my comment above about developers.
Application tuning and performance monitoring.There are enterprise solutions for monitoring. Also Oracle has Grid Control.
Application tuning can be done by app vendors.I've NEVER met an app vendor that knew **** about how their app impacted performance. 100% of them throw it back on the DBA. I had an app vendor tell me that Oracle was incapable of sustaining more than five concurrent connections.
DBA cannot tune App itself. It may only modify some things in DB that will perform better. And this will be automated.
No, because the database cannot anticipate what stupid things the vendor may do. And it can only work with what it is given.
Setup and maintain documentation and standards.How often?
As often as anything that is documented, changes. As often as it is discovered that something that should be documented, isnt'
Plan growth and changes (capacity planning).Well, DBA should do it. But, again, how often?Should be almost constantly. Given budget cycles, you can't wait until your disk is 98% full before asking to buy more.
>
Work as part of a team and provide 7×24 supports when required.Where such 7×24 support policy exists.Look at my comments above about how these lists get created in the first place.
I can tell you from experience that such 24x7 policies are more common than you seem to think. Just about any financial processing business, logistics and transportation business, telecom business ...
And what from above should be supported during a night by a human?
I see just a restore/recover DB, because a human should make a decision "From which Date".
Do general technical trouble shooting and give consultation to development teams.Yes, in Dev shops. Most of shops are not development shops, though may do custom and ad-hoc reporting and small app development. Do they need a dedicated DBA for this? I doubt. Either a developer will be (self)trained to do some DBA's tasks or DBA will become a SQL developer in that team.
Interface with MSSQL/MySQL/Oracle for technical support.Oh yeah... :)
ITIL Skill set requirement (Problem Management/Incident Management/Chain Sure, two days of training to know basics of ITIL to understand what manager of Helpdesk (Support and Incident Management Team) is talking about.
So, I see DBA should go in of 3 directions:
1. Very deep technical expert that can help in some rear and difficult cases. How many of them will be needed?
2. SQL/ETL/etc Developer. There is not much automation in software development yet.
3. DB Design and Architecture. How many of them will be needed? May be more that #1.You seem to think that automation will solve everything. Take that to it's logical conclusion and it will put all of IT out of work. See my comment above regarding "End User Computing'. What you forget is the human element. Not the human DBA trying to do things you think are or soon will be automated. No I'm talking about the humans that create the kinds of problems that automation is *always* trying to catch up with. Pointy Hair Bosses dreaming up new requirements. Bean counters refusing to by an additional 10 gb of disk. Developers that refuse to learn and/or follow best practice. Developers that can't think beyond clicking an icon to create a table. Developers that treat an rdbms as a data dump and try to use Java to re-invent every bit of functionality the db already provides. Systems administrators that delete all of your online redo logs because he needed disk space and 'log files are expendable'. End users that forget their password *EVERY F****** DAY!*
No, I don't spend my time managing extent distribution like I had to do with 8i. Yes, a lot of things I had to do manually in 8i are now successfully automated to the point I don't have to do them .. or have simply been engineered out of the system. But no amount of automation will overcome the ways humans (Executives, managers, supervisors, other IT team members, and users) figure out how to bring a system to its knees.
This whole discussion reminds me of Dippin' Dots. "The Ice Cream of the Future". Well, it's been "The Ice Cream of the Future" for almost 30 years ....
Edited by: EdStevens on Oct 1, 2012 8:55 PM

How to Prepare for a Job Interview of Oracle DBA ?

How to Prepare for a Job Interview of Oracle DBA ?
Like, What books, PDF's, Websites to refer to get selected for the post of Oracle DBA.
Edited by: sdmuzdba on Mar 25, 2009 7:10 PM
Edited by: sdmuzdba on Mar 25, 2009 7:13 PM
Edited by: sdmuzdba on Mar 25, 2009 7:24 PM

sdmuzdba wrote:
How to Prepare for a Job Interview of Oracle DBA ?
Like, What books, PDF's, Websites to refer to get selected for the post of Oracle DBA.
Well , you won't go for shopping when there are already guests in your home , will you? In case, that didn't make much sense, I meant that you won't start reading books, pdfs, looking at websites when you are going to have an interview already scheduled for you. I can bet my money( whatever little I have) that even doing this, won't bring you any good. If your question directly or indirectly is related to the questions that the interviewer may ask, once again, this would be a total wrong approach to go for an interview. In almost no time, it can be find out whether you are speaking some crammed line or from yourself. I had a chance to sit on the other side of the hot seat and the guy in front of me was giving all teh bookish answers. I twisted the questions and I was sure that he must have not read them anywhere, guess what happened. he started fumbling and finally gave up.
Interview is what you know, what you have done so far. Its not to start picking up LOTS of books, looking for the questions/answers and just think that the interview will happen from that only. I have some questions whose answers, at least the complete answers , you won't find anywhere. My suggestion is to just go for the interview, be honest about what you know and more about , what you don't know. You haven't committed a crime by not knowing some thing. I know nothing and I am never scared from the interviews ;-) .
Not sure that did help or not but still, best of luck.
Aman....

Entry point in Oracle DBA

My name is James, and I am a resident of seattle WA. I am a software and hardware tester profesional both in manual and automation using windows and linux (but mostly software testing on windows platform) for the past 6 plus year. However, I am looking forward to go into oracle DBA. I have intermediate experince with MS SQL 2005/2008 and oracle 9g/10g. What is the best resources out there or book(s) that I can use to enhance my oracle DBA skill and is there a way to get an entry oracle DBA position out there to kick off as an oracle DBA? Any advice would be highly appreciated.
Thanks,
-James.

Its getting near impossible to get into the Oracle DBA field, unless perhaps you are a developer at a company that just happens to need a DBA and you are in the right place at the right time.
Most companies have downsized their DBA staffs, and most companies now expect their DBAs to take on much more databases as well as other responsibilities, including web server administration, develop SQL and PL/SQL and reports, and just about anything else your supervisor happens to need without having the funding to hire someone.
Just as you noted, to be a DBA today requires at least 3-5 years experience, along with a couple years of RAC, Data Guard, Streams, TT, and whatever else is new, and perhaps a Top Secret Clearance that has been active within the past 6 months.
Its near impossible. Even then, if you happen to have all of the above, there will likely be 20 or 30 (or more) qualified applicants for every job opening. But most companies are not hiring to fill permanent positions. They would rather hire you as a temp worker that they don't have to worry about laying you off, or paying your benefits. And of course, if you work for a temp agency, they don't have benefits. And most companies don't want to hire someone who has been working for temp agencies very long because they think you will just leave for the next opportunity to make more money.
And if you do happened to get hired by a company in a permanent position, they will likely put you on as a salaried employee that they can exploit and work you 55 hours a week without compensation or time off for hours over 40 hours.
So catch-22 is exactly right. For a newbie, I think it would be easier to get a IT related job within a company and then perhaps transfer positions later when or if one ever opens up.
It sounds like a bleak picture, and actually it really is, especially for a newbie coming into this field. I'd recommend considering web page development for eCommerce type software. That seems to be where the money is, (if you don't mind doing that kind of work).
Just my two cents...

Looking For Oracle DBA Supervisor

I am looking for a Database Management Supervisor for an excellent company with great benefits and excellent working culture. Profile is mentioned underneath. Managind DBA's Experience is very necessary. There is also a referal fee of $1000. Feel free to call me for further questions and send your resume at [email protected]
Thanks
Harvinder Singh
www.karta.com
[email protected]
Ph: 800-725-2782 x3302
210-582-3302
This position will be responsible for supervising 6-9 Database Management Analysts (DBAs) in managing databases and supporting application development. This position will also give directions and lead the activities of enhancing database standards and procedures for Oracle Database operations. Responsibilities include:
· Plan DBA resource for production support and various projects
· Manage the performance of assigned associates (primarily Oracle DBAs)
· Provide database services to applications running on Oracle, Sybase, Adabas, and Microsoft SQL Server
· Provide technical direction of database operations (database design, database backup/recovery, monitoring, security, performance tuning, etc.)
· Maintain relationships with clients, managers, end users, and other technical staff, to understand client needs and optimize service levels
· Work with the manager to select, develop, and maintain an effective team
· Resolve any database performance issues pertaining to specific projects and general day-to-day activities
· DBMS software management
· DBMS vendor management
Requirements for this position include:
· Minimum 2 years experience managing DBAs
· Must have extensive Oracle database management experience
· Strong knowledge of RDBMS management throughout the application development cycle
· Strong knowledge of managing database in the Unix environment
· Good judgment in identifying issues and recommending solutions to others
· Strong communication skills
· Project management skills
· Thorough understanding of application architecture concept
· College Degree
Desired skills include:
· Sybase
· MS SQL Server
· Windows knowledge
· Mainframe knowledge

Hi,
below is the link which will help u to upgrade 10.3 orderbookin to 11g
http://docs.oracle.com/cd/E23943_01/upgrade.1111/e10127/soa_order_booking.htm
"A Example: Upgrading and Redeploying SOA Order Booking"
Note: The composite functionality is same between soa suite 10.3 and 11g. you can upgrade the composite using 11g jdev and it will be automatically converted to 11g composite
If you are happy with answer please assing some points

Cloud Computing - Oracle dba

Hi Experts,
kindly let me know what is cloud computing and what role can a Oracle dba have in this profile ?
Regards,
Chandra.

At the moment, nothing since this concept is yet to be made more polished and refined. The only cloud thingy that I am aware of related to oracle db is the option to go for Amazon's cloud service to put up the backups. I guess it would be better to choose the policy of wait and watch and see what the next release would say and do about cloud computing.
Aman....

Need Oracle DBA Job

Hi All,
This Karnan, i have finished BCA(Computer Application) 2008, and i did oracle9i DBA OCP,
I was not able to get into Oracle DBA as a fresher.
Finally Nov-2009, i got job in POLARIS SOFTWARE LAB ltd., as Software Tester.
I'm very much passion about in Oracle, i want to be a DBA only,
Please any one guide me how to get entered in ORACLE DBA as a fresher,
or let me know if you know about companys whho's hiring freshers for oracle.
Thanks,
Karnan Thambidurai

Well, I am not sure that how does this question fits in the database general forum in any ways. If it should be posted( please note the "if") , the most suitable place would the Community discussion forum.
I am not from HR background so please take my advice with grain of salt. When you would be working as a contractor, there would be two ways for this thing. One , you own your company so all the payments , invoices would be on your own company's name. If that's so, no issues. You can always show those invoices. The other way , using which the contract work is done is that you are hired by company X but you end up working for company Y. So company Y doesn't give you anything but your company X is supposed to give you whatever paper work is needed. So see if this is your case.
Whatever the thing may be, the HR of the next company won't stick to the pay slip only provided you can prove that you worked and the money you got for that work was a legal, taxable amount. As long as you can prove that by whatevre kind of document, you are good. That said, you haven't yet started and you are thinking about leaving too! At least do the job first for some time before you care about what the next company's Hr would say since you can always ask them all of these doubts.
Again, please note that Iam not from HR , never was or will be so all what I said is purely based on what I know how things work but any of my words are not at all authoritative.
HTH
Aman....

Types of tickets which a oracle dba solves

Hi,
Can u please tell me about different types of tickets which will come for a dba to solve.I also want to know information on L1 AND L2 support. What is the difference between them.

It really depends on the kind of business that you are running.
If its a ASP environment and you are responsible for handling customer databases as well, then expect tickets right from installation till performance tuning.
If it is a in-house development, then as a DBA you should be concerned only with the database related issues; even database server related issues should be handled by the system administrators, not you.
I also want to know information on L1 AND L2 support. What is the difference between them. Its how your company defines them.
In general, as a DBA, you should be concerned only with the database related issues but you should also be able to pin point the problem, if it is not database related.

Roles and responsiblities of oracle dba in development team

What should be the roles and responsiblities of oracle dba in development team?
Does Application dba should have oracle user credentials on db box?

Hi, Application DBA work as like production DBA, while resolving issue SLA would not apply for them . Apart from this developement team pressure will be there.
These are points remembered.
Creating test Db for testing environment,
Schema Replication of POC
replication the DB for interface setup .
User , Space management.
Roles and Security management
Space Forecasting -this will be useful when you are estimating for storage
need to give application set up to Production DBA with proper specification.
maintaining the schema changes
Ensure that right script shas to provide the Production DBA team .
Deployment of the application.
performance tuning..
All environment memory /CPU statistisc need to check by regular interval.If any issues need to escalte to INFRASTRUCTURE team
HTC
tippu

I'm usually asked in interviews what r common RAC related issues do u face

I don't know much because generally what I face are general DB issues and at the max i see some
rac related wait events 2 way or 3 ways grants .
Can somebody plz give me some idea what kind of RAC related issues people face in 10g or 11g RAC
Thanks
Gagan

Global Cache Wait Events
gc current/cr request: These wait events are relevant only while a gc request for a cr or current buffer is in progress. They act as placeholders until the request completes.
gc [current/cr] [2/3]-way: A current or cr block is requested and received after two or three network hops. The request is processed immediately: the block is not busy or congested.
gc [current/cr] block busy: A current or cr block is requested and received, but is not sent immediately by LMS because some special condition that delayed the sending was found.
gc [current/cr] grant 2-way: A current or cr block is requested and a grant message received. The grant is given without any significant delays. If the block is not in its local cache, a current or cr grant is followed by a disk read on the requesting instance.
gc current grant busy: A current block is requested and a grant message received. The busy hint implies that the request is blocked because others are ahead of it or it cannot be handled immediately.Oracle RAC need Gigabit Ethernet for Interconnect(don't use cross cable), create index to reduce Global Cache Wait Events.
Can somebody plz give me some idea what kind of RAC related issues people face in 10g or 11g RACWhat did you know?

Can not insert a row to a table from Oracle DBA Studio

Hi,
I try to use the Oracle DBA Studio to create a table and put some test data in it. Here is what I found:
I start Oracle DBA Studio on the client machine by connecting to an Oracle server 8i (8.1.7). I create a simple table called Test with two columns: one is USER, VARCHAR2, 10; and the other is USER2, CHAR, 2. After that, I right click on the table name and select "Table Data Editor" from the popup menu. The table editor window shows up. I type in the value 'AA' and 'BB' in the grid of two columns. Then I click the Apply button. An error message box popped up:
ORA-00928 missing SELECT keyword.
I click Show SQL button. The SQL statement is as following:
INSERT INTO "TASYS"."TEST" (USER ,USER2 ) VALUES ('AA' ,'BB').
I copy the statement to SQL Plus and run it. The same error is generated. But if I remove (USER, USER2) from the statement, it inserts a row without complaint. In other word, the database will not allow to insert if individual columns are list. I realize something must wrong with the new server and client installed and could not figure out what happening. Hope someone can help.
Thanks.
null

I am not sure, but could it be that USER is a keyword or predefine word. Check Oracle'slist of predefine/keyword

DBAShell - New Open Source Project for Oracle DBA's

I'd like to have this project included in the Open Source Oracle tools list at: http://www.oracle.com/technology/community/opensource_projects.html
I've been an Oracle DBA for quite some time (since 7.0.13) and a developer for many years. One of the things I've always wished for was an easier way to set up environment variables for different Oracle Homes and a way to provide passwords to scripts without embedding them in plain-view.
About 3 years ago, I started a set of functions and scripts at my company that did exactly just that and provided many more functions for things like checking database status, running scripts quietly unless errors are detected, running actions in parallel (like fast shutdowns at once, or multiple analyzes), restarting databases in a guaranteed fashion, aliases to common folder locations, etc..
About a month ago, after putting all this time and effort into these scripts and using them in production all this time, I realized I wanted more out of the scripts like support for other databases and thought that it would be best if I gave it new life as an Open Source project.
So that is how http://sourceforge.net/projects/dbashell/ was started. Now its in a second release (DBAShell 0.85) that is more modular and would allow other people to easily add support for other OSs, other Shells, and other Databases.
Here is a description of the project from the latest news item:
DBAShell is a project based around Shell functions and scripts designed to make it easy for DBA's to use Databases in a command line environment. Currently supported is Oracle with ksh and bash on AIX, Solaris, Linux. The code base itself is 3 years old and has been in use in Production environments all of that time.
Features include:
* Automatic setting of all environment variables based on SID requested.
* Manage PATH's and other path like variables for each ORACLE_HOME needed.
* Run scripts with stored passwords (no more hard-coding of passwords!!)
* Automatically set SID based on Script location (makes it easier to share scripts between SID's)
* manage temporary script output and check for oracle errors in output
* check database status and versions from scripts
* stop/start databases in parallel (faster startup)
* compile all database objects
* analyze objects in parallel (Faster analyzes)
* set aliases and variables for common SID areas, etc..
* many helpful commands for common Oracle tasks
Over a thousand people have already downloaded the prior release and more are downloading every hour.
I'm seeking feedback from anybody that would be willing to take a look at the project, trying it out, give me any feedback you have on it, and perhaps even direct me to where I could best promote this project.
I wrote a tutorial that shows at a glance some of the more useful features of DBAShell:
http://sourceforge.net/docman/display_doc.php?docid=34041&group_id=170224
Main site:
http://sourceforge.net/projects/dbashell/
Documentation: http://sourceforge.net/docman/display_doc.php?docid=33704&group_id=170224
Download:
http://prdownloads.sourceforge.net/dbashell/dbashell-0.85.tar.gz?download

Always glad to have people thinking about the poor DBA's. Usually, the developers get most of the attention in open source.

Oracle DBA related issues ?????

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