Needs Clarification Regarding Tablespace

Hello,
I'm using Oracle 10g DB and I want to know weather to creating database from DBCA automatically create a tablespace for that database or we have to create manually.
if it create automatically then how can we retrive information about that database.
Looking for Reply
Regards,
D.Abbasi

When you create database using DBCA you can choose tempalte, in the template there tablespaces defined, the tablespaces that will be created depends on the tamplate you choose, and if you installed sample schema's.
Every database created need to have several system tablespaces.
You can retrive all of database tablespaces using :
select name from v$tablepsace;
Oded
[www.dbsnaps.com]
[www.orbiumsoftware.com]

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Needs Clarification Regarding Segments and Datafiles

Hi,
I want clarification regarding Segments, Datafiles and extents.
As we know that A segment is made of one or more extents and extents are composed of one or more datablocks in the HD.
Since all data are store in Datafiles which are composed of extents and datablocks. I want to know weather a table(Segment) can span to multiple datafiles or in a sigle datafile.
Regards,
D.Abbasi

And an easy way to check it by yourself :
SQL> create tablespace abbasi_tbs
2 datafile 'E:\ORADATA\DEMO111P\abbasi_01.dbf' size 1m autoextend off,
3           'E:\ORADATA\DEMO111P\abbasi_02.dbf' size 1m autoextend off;
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SQL> create table abbasi_tbl (id number)
2 tablespace abbasi_tbs;
Table created.
SQL> insert into abbasi_tbl
2 select rownum as rn
3 from   dual
4 connect by level <=10000;
10000 rows created.
SQL> commit;
Commit complete.
SQL> select distinct file_id
2 from   dba_extents
3 where segment_name ='ABBASI_TBL';
   FILE_ID
         6
         7
or...
SQL> select distinct DBMS_ROWID.ROWID_RELATIVE_FNO(rowid)
2 from   abbasi_tbl;
DBMS_ROWID.ROWID_RELATIVE_FNO(ROWID)
                                   6
                                   7
SQL> select file_name from dba_data_files where file_id in (6,7);
FILE_NAME
E:\ORADATA\DEMO111P\ABBASI_01.DBF
E:\ORADATA\DEMO111P\ABBASI_02.DBF
SQL>Nicolas.
added the ROWID function usage
Edited by: N. Gasparotto on Jun 21, 2009 11:02 AM

Needs Clarification Regarding Listener.ora file

I want a clarification regarding listener.ora file I've Listener.ora file and its content look like as:
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# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = Oracle8)
(SID_NAME = ORCL)
LISTENER =
(DESCRIPTION_LIST =
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*(SID_DESC =*
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*(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)*
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Although rest of entries refer to network services(Database name) and host address and protocol etc.
what these above refere to.
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Regards,
D.Abbasi

(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
that about External Procedure, If you don't use "External Procedure" you can remove it, by the way you should avoid default configure.
http://download.oracle.com/docs/cd/B19306_01/network.102/b14212/advcfg.htm#sthref1331
http://download.oracle.com/docs/cd/B19306_01/network.102/b14212/advcfg.htm#NETAG0132
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_extern_proc.htm#sthref1658
Sample create External Procedure:
http://surachartopun.com/2008/07/create-and-run-sample-external.html

Need clarification regarding the test cable-diagnostics tdr command

Hello,
I've read about the test cable-diagnostics tdr command but I need clarification on the examples listed below to make sure that I am providing the right answer to my co-workers.
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TDR test last run on: July 16 10:23:00
Interface Speed Local pair Pair length        Remote pair Pair status
Gi0/20    auto Pair A     N/A                        N/A                Normal
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Does this example mean that there's a cable length issue in the line which is causing the device that it's connected to not to work properly?
Example 2:
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TDR test last run on: July 16 09:16:22
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TDR test last run on: July 16 06:36:53
Interface Speed Local pair Pair length            Remote pair Pair status
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S

I found this article here at supportforums that seemed like the best explanation I've read so far for TDR info.
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Need clarification regarding select query

Hi,
I need a little clarification regrding a Select senario
I want to select data from table which have been minupulated between a certian date like between 1-DEC-10 to 31-DEC-10 and note that table does not have any time/date column. I've applied the following query to do this.
select * from TABLE_NAME where sysdate between to_date('01-DEC-10') AND to_date('31-DEC-10');
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Regards,
Abbasi

Abbasi wrote:
Hi,
I need a little clarification regrding a Select senario
I want to select data from table which have been minupulated between a certian date like between 1-DEC-10 to 31-DEC-10 and note that table does not have any time/date column. I've applied the following query to do this.
select * from TABLE_NAME where sysdate between to_date('01-DEC-10') AND to_date('31-DEC-10');
Would it work fine because I've tried it against a table and it returned me nothing however DML occur between time period.
Regards,
AbbasiAFAIK without log mining and auditing this is not possible.
http://download.oracle.com/docs/cd/B19306_01/server.102/b14215/logminer.htm

Need clarifications regarding APEX_PUBLIC_USER

Hello all,
Apex 3.0 on 10g
'am aware that APEX_PUBLIC_USER is the one used by the apex applications to get the stuff from the database.
I have noticed that in v$session there do exist the apex_public_user even if i logout from the apex.
In my production i have found apex_public_user with last_call_et greater than 7 hrs
and also when i tried to drop a package from the apex sql window, it hangs and doing the same from sql*plus from system account makes the session hang, which i will need to kill later. What could be the reason for the session to get stuckup??
Thank you,
J J

Yea, today i had to bounce my DB for some reason and there were no connections from the APEX_PUBLIC_USER and i could drop the package.
Is there anyway to close those sessions from the oracle HTTP server once they are done with the job than letting them lingering around?
Will APEX use these existing sessions like a connection pooling?
TIA,
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Need Clarification Regarding Structural Authorization

Hi Gurus,
When you do need to implement Structural Authorization? How do you know when you don't need it?
I'm currently on an ECC6 implementation project and was informed that we do not need to implement it even though we are implementing the HR organization structure along with ESS and MSS.
Your inputs are highly appreciated.

for one it can be useful to implement structural authorizations when you want to restrict not only on the enterprise structure (e.g. personnel area, employee group etc.) but also on organizational atributes (position, org. units and the likes).
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as for your second question, I assume that there is a misunderstanding of terms. HR roles as such are the same as non-HR roles in so far that they can be assigned to the user directly through SU01 or PFCG.
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Need clarification regarding Work status rule

Hi All,
I have a work state "Submitted" which is controlled by "owner".
My work status is driven by following dimensions in the application:
u2022Entity - Owner dimension
u2022Category
u2022Time
Entity hierarchy is as follows : A
|____B
|____C
Now considering that user is owner of member "A", I set the work status to "Submitted". (Note: B and C does not have any owner)
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On the other side, one of the document tells states that "If the user is acting as an owner and the selected member has no parent, the user also acts as a manager (top hierarchy), they can select a work status controlled by "Owner", "Manager" or "Both"".
Going by this rule, in the scenario which i have explained above, it should set the work status as "submitted". But it is throwing error.
Kindly clarify if my understanding is wrong.

Hi,
The problem is arising because as per the setup, only the owner can change the work state to submitted. However, there are no owners for the child members.
You can try changing the setting to manager. If you login as owner of A, then you will be able to change the work state of A (since you are your own manager because A is the top node) and you will be able to change B and C also (since you are the manager).
Alternatively, you need to maintain the same user as the owner of B and C.
You have rightly indicated the statement "If the user is acting as an owner and the selected member has no parent, the user also acts as a manager (top hierarchy), they can select a work status controlled by "Owner", "Manager" or "Both"".
However, if you take a look at this statement, this is valid if the setting is manager. But in your case, the setting is owner. And there are no owners of the children.
Hope this helps.

I need clarification regarding REFERENCE TYPES and CASTING.

Hello all,
I'm taking a course on the fundamental of JAVA. Everything's been going smoothly until I slammed into the the concept of CASTING and REFERENCE TYPES. Flat--out == I DON'T GET IT?
I'm having trouble with...
CONVERTING REFERENCE TYPES
CASTING BETWEEN REFERENCE TYPES
WORKING WITH REFERENCE TYPES
I understand what's happening from an academic vantage point. I just don't understand why you'd want to convert REFERENCE TYPES? What would be an application of such an exercise?
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b. type? type of what??
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I understand the concept of OBJECTS, CLASSES, METHODS and CONSTRUCTORS so far...
I think it's the terminology that's screwing my up.
Thanks,
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ok... wow, thanks J.
So--in a nutshell-- we're making it so that different
objects:
ie,. ford(), chevy(), honda(), lotus() and
dealers()... so and so forth()...
all share the resources(for lack of a better word) of
the Auto Class? because all of those auto brand
objects and one redically different object can be
unrelated, correct?Um, yes and no.
I just ran with the example you had, but that probably included too many concepts and they got muddied up.
Yes, Chevy, Ford etc. all share the characteristics of Auto, since they're all subclasses. But that's just inheritance, and has nothing to do with casting.
A "reference type" can loosely be described as a variable that refers to an object. (Constrasted with "primitive types" which are int, char, float, etc. and don't refer to objects--they just hold values.)
Casting just tells the compiler that even though as far as it knows you only have a reference to some superclass, the object that reference points to will in fact be an instance of a subclass, and so treat it as such (e.g., we can now call methods that the subclass has that the superclass lacks).
(You can also cast primitives, but one thing at a time.)
So let's say you have class A (which extends object) and B extends A.
A a = new B();
B b = a; // won't compile. compiler sees the "A a" on the left of the =, not "new B()" on the right.
B b = (B)a; // works because we're telling the compiler, "Dude, I'm seriously. This is a B.
Note that if we had done new A() instead of new B(), it would still compile--the compiler would trust us. But at runtime, we'd get a ClassCastException, since we wouldn't actually have a B object.
/**folks, I'm a web designer that has to learn Java
so that I can perform my duties as a JSP author here
at work. I tried to learn JSP sans Java and that was
a simple exercise in ignorance.-- it's really hard
without understanding the root concepts of Java and
for that matter, C. Concepts like "polymorphism,
inheritance, object references... are completely
foreign to me. **/It's a rather big leap from web designing to OO concepts. Take your time, and don't be discouraged if you feel completely confused. It's a prerequisite. :-)

Need clarification on issue with tablespaces

Hi All,
I needed clarification on this issue with tablespaces.I am following a guideline which says "Presently,The general rule of thumb is to concentrate on tablespaces that are 90% or greater used and have less than 2 GB of free space"
My Scenario:-Now i have tablesace which is 97.23 % and the free space is 10 gb.Please advise me that whats the best next step I can take in this respect?
I am very new to this and just following the guideline,so can you all please explain me some details about this.
Thanks

Well, the guideline says "*and* have less than 2 GB of free space"
Since that tablespace as 10GB of free space, the guideline says that you do not need to concentrate on it. Eh ?
I would be careful with guidelines that are hard-coded in this manner. You need to know the context in which the guideline was set.
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Need clarification on Bigfile Tablespaces

In the following Oracle Documentation Lirbary PDF,
    Oracle® Database
    Concepts
    10g Release 2 (10.2)
    B14220-02
    October 2005
section
    Overview of Tablespaces
    Bigfile Tablespaces (page: 3-5)
it says,
    Benefits of Bigfile Tablespaces
    * Bigfile tablespaces can significantly increase the storage capacity of an Oracle database. Smallfile tablespaces can contain up to 1024 files, but bigfile tablespaces contain only one file that can be 1024 times larger than a smallfile tablespace. The total tablespace capacity is the same for smallfile tablespaces and bigfile tablespaces. However, because there is a limit of 64K database for each database, a database can contain 1024 times more bigfile tablespaces than smallfile tablespaces, so bigfile tablespaces increase the total database capacity by 3 orders of magnitude. In other words, 8 exabytes is the maximum size of the Oracle database when bigfile tablespaces are used with the maximum block size (32k).
I need clarification on how to arrive at 8 exabytes ?
1024 x 32k x 64,000 ??
According to the exerpt above, there's no mention of maximum number of Operating System blocks per extent. Unless this was assumed knowledge ... how do I get 8 exabytes ?
And if "a database can contain 1024 times more bigfile tablespaces than smallfile tablespaces", then what's the upper limit on smallfile tablespaces ? -- was this sentence referring to the number of datafiles per smallfile tablespace ? ...
O_o
Thanks !
Message was edited by:
mvanle

Hi,
According to [url http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14237/limits002.htm#i287915]Physical Database Limits page, a bigfile tablespace contains only one datafile or tempfile, which can contain up to approximately 4 billion ( 232 ) blocks. The maximum size of the single datafile or tempfile is 128 terabytes (TB) for a tablespace with 32K blocks and 32TB for a tablespace with 8K blocks. In resume, A bigfile tablespace is a tablespace containing a single datafile that can be as large as 128 terabytes (TB), depending on the block size of the tablespace. In conjunction with setting the initialization parameter DB_FILES to the maximum value of 65,635 the total size of the database can be more than 8 exabytes (EB)
>>how do I get 8 exabytes ?
You can calculate the maximum amount of space (M) in a single Oracle database as the maximum number of datafiles (D) multiplied by the maximum number of blocks per datafile (F) multiplied by the tablespace block size (B):
M = D * F * B. Therefore, the maximum database size, given the maximum block size and the maximum number of datafiles, is:
65,535 datafiles * 4,294,967,296 blocks per datafile * 32,768 block size = 9,223,231,299,366,420,480 = 8EB.Cheers
Legatti

Please Help , I Need semicolon ; after TABLESPACE "MFEED_DATA"

Hi All,
please Help , I Need semicolon ; after TABLESPACE "MFEED_DATA"
as I am getting ; like below example
select dbms_metadata.get_ddl('TABLE', 'A') || ';' As Result
from dual;
CREATE TABLE "MFEED"."A"
( "A" NUMBER
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regards,

Hi,
well, I don´t know if this works for any table, but I tried two of mine and it was ok:
select substr(dbms_metadata.get_ddl('TABLE', '<table_name>'), 1,
length(dbms_metadata.get_ddl('TABLE', '<table_name>') || ';')-4)|| ';' As Result
from dual;
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Regards,
Gerd
Message was edited by: Gerd
OK, Jens has the perfect solution - forget mine!
gerd_99

Need Clarification On Internal tables in Start Routine

Hi,
I have intenal table some IT_A which deletes the requests which are populated in to it.
Now I need to populate requests into IT_A from another internal table like IT_B which are of different structure.
I have three fields in common in both internal tables like RNR,Timestamp n SID with different field names
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Thanks,
Sriram.

Hi Sriram,
As mentioned IT_A deleted the request loaded into it.
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But it would be deleted if the the contents are moved before the deletion step takes place
regards,
mahesh

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hi
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Regards
S.Chandran

Hi,
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Related to calculated property
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Need clarification for Quarter....( Can Q1 start from DECEMBER )

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Q2 --MAR,APR,MAY ..etc....
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Hi Baskar,
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Thanks,
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Edited by: Arun Bala G on Jul 16, 2010 7:11 AM

Needs Clarification Regarding Tablespace

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