Oracle Database Concept - Transactions
Nov 6, 2011How a DB client session establishes a connection and how it performs any transaction.
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Database Normalization Concept
Jun 24, 2013the database normalization concept. I have gone through couple of blogs and the websites but even i am not clear about the 1NF, 2NF, 3NF, Boycee Code etc, may be i am missing the basic points. give me some example notes / more clear precise information to understand the concepts clearly.
View 2 Replies View RelatedNetworking And Gateways :: ISP Concept In Oracle?
May 29, 2012what is ISP concept in Oracle10g???
View 2 Replies View RelatedSQL & PL/SQL :: Does Oracle Support Domain Concept
Dec 8, 2011Do Oracle SQL support Domain Concept?
View 3 Replies View RelatedBackup & Recovery :: Log File Concept In Oracle
Dec 10, 2011what is the process of creating log file in database, Suppose if we have two user ,and both are logon through id & password,at that condition i want all log file from users who done at the database like any events.
View 1 Replies View RelatedOracle Hung Transactions
Jul 22, 2012I have the following PL/SQL program.
declare
v_amount NUMBER;
v_paymentno INTEGER := &sv_paymentno;
v_playerno INTEGER;
v_payment_date DATE:= SYSDATE;
begin
select 500 into v_amount from dual;
select 44 into v_playerno from dual;
insert into penalties values (v_paymentno, v_playerno, v_payment_date, v_amount);
end;
I forgot to add the commit statement and now I have hung transaction with dirty data with v_paymentno 27. Is there a way to commit or rollback that transaction?
Replication :: Oracle 9i - Does Not Push Transactions Automatically
Jun 7, 2002I have problem with my Replication using oracle 9i.It does not push transactions automatically when refresh time comes but it works fine when pushed manually.I have two sites:
1- Master
a-Master group
2- Materialized view site
a- Materialized view group (Asynchronous)
b- Materialized view with refresh occur automatically on future date every 5 minutes
c- refresh type FORCE.
XE :: Use Oracle DB 11g Express Edition With Atomikos Transactions
Jul 16, 2012I'm able to use Oracle 11g Standard/Enterprise Edition with Atomikos for XA transactions.(XADMS).
My question is Can I Use Oracle DB 11g Express Edition with Atomikos for XA Transactions.
External Table Concept
Jun 22, 2009Provide material for External table concept .which is like exactly as SQL * Loader concept.
What are the basic difference between External table concept and SQL * Loader concept.
Hierarchical Retrieval Concept
Oct 20, 2010Any links on hierarchical retrieval concepts?
View 3 Replies View RelatedSQL & PL/SQL :: Normalization - Concept Of Primary Key / Composite Key
May 17, 2013I am following Lynda Tutorial for Normalization. I have understand normalization.The core concept of primary key is that it uniquely identifies each record in the table, but here in the given below image the 'COURSE' field is repeating 'SQL101' value again and again but still the teacher in the video is calling it primary key and combination of date & Course column Composite key.how can a field which vales are repeating can be called as Primary Key?
View 12 Replies View RelatedWhat Is Stripping Concept In Automatic Storage Management
Sep 21, 2012What is Stripping concept in Automatic Storage Management?
How it spreads the database files across the disk group (Suppose i am having 4 disks in my disk group)?
Data Guard :: Fast-start Failover Concept?
Jun 17, 2010what is the configuration dba has do for enabling the "fast-start failover concept" in the event of loss of primary database without requiring any manual steps to invoke the failover.whether the configuration are to be made in parameter file if yes what are those ?
View 1 Replies View RelatedServer Administration :: Query On Redo And Undo Basic Concept
Nov 17, 2010understanding a redo/undo concept . Refer following data
create table t(n number);
insert into t values(10);
commit;
now I update as following
update t set n=20;
As per my understanding the before image i.e. n=10 is stored in undo (to be used for rollback, transaction recovery and even in instance recover but not in media recovery) and after image n=20 is stored in redo (to be used for various recovery purposes including media recovery in case of consistent backup).
So it is redo logs for rolling forward and undo for rolling back making transaction, db consistent . If my above understanding is true then what is meant by the term 'redo required for undo'?
Also, if there are 2 database db1 and db2 connected using database link where we are populating t1 table in db1 using t2 table in db2 using db link where redo and undo will be updated db1 or db2?
SQL & PL/SQL :: How To See Today's Transactions
Sep 24, 2010how to see for todays transactions in a database's Schema for example, in scott/tiger user.
To See All DML Operations carried out for current day with a single query, Insert,Update, Delete for the tables affected today.
Export/Import/SQL Loader :: Script To Execute Impdp Using SILO Concept
Apr 4, 2013write a shell script to perform impdp using dbms_datapump using SILO concept .
View 9 Replies View RelatedORA-24756 In Distributed Transactions
Jan 31, 2013We found out an error from alert log of our Oracle 10.2.0.5 DB :
====================================
..
Wed Jan 30 16:45:01 EAT 2013
DISTRIB TRAN bea1.67AA54355C4A74ECDEE0
is local tran 6.42.332492 (hex=06.2a.512cc)
insert pending prepared tran, scn=8151148567799 (hex=769.d6509cf7)
Wed Jan 30 16:45:02 EAT 2013
Errors in file /oradata/sfapdb/bdump/sfapdb_reco_2739.trc:
ORA-24756: transaction does not exist
Wed Jan 30 16:45:02 EAT 2013
Errors in file /oradata/sfapdb/bdump/sfapdb_reco_2739.trc:
ORA-24756: transaction does not exist
..
====================================
There is no useful information from the trace log as shown below:
====================================
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Data Mining and Real Application Testing options
ORACLE_HOME = /ap/oracle10
System name:HP-UX
Node name:scvap2
Release:B.11.23
Version:U
Machine:9000/800
Instance name: sfapdb
Redo thread mounted by this instance: 1
Oracle process number: 18
Unix process pid: 2739, image: oracle@scvap2 (RECO)
*** SERVICE NAME:(SYS$BACKGROUND) 2013-01-30 16:45:01.941
*** SESSION ID:(1749.1) 2013-01-30 16:45:01.941
*** 2013-01-30 16:45:01.940
ERROR, tran=6.42.332492, ose=0:
ORA-24756: transaction does not exist
*** 2013-01-30 16:45:02.059
ERROR, tran=6.42.332492, session#=1, ose=0:
ORA-24756: transaction does not exist
====================================
I also found out there are some records (trans_id = "6.42.332492") in SYS.PENDING_TRANS$/ SYS.PENDING_SESSION$/dba_2pc_pending with "prepare" status.
This transaction is launched from a Weblogic Server via JDBC. Since it is abnormal so I have no choice to force commit/purge this transaction. Is that a bug of Oracle DB ? or Weblogic coding problem ?
SQL & PL/SQL :: How To See A Tables Transactions For The Day Or Interval
Jun 12, 2012I have a problem, we have some datas in a table for example 7500 rows in a table name called table1 upto 11:am today. but after 11:25 am i have only 5500 rows. in that table.
the table can be accessed by many users here. we dont know when the delete happended in that table. is there any query to find the transaction log of this particular table.
the deletion should be happended between 11:00 am to 11:30 am. but we have retrieved the data using timestamp query. but we need to know when the query issued and by which user the query has been issued.
Serialize Distributed Transactions
Mar 27, 2012here
[URL].......
you wrote that
"The serialize transaction isolation level is not supported with distributed transactions."
what is not supported (or example on what is not working properly)?
Sessions Processes And Transactions
Nov 20, 2012Oracle database 11g Expression Edition 11.2.0.2
I want to change the the number of processes to 150 (default is 100) I did this by issuing the below command.
alter system set processes=150 scope=spfile;But why that modified value is not being reflected?
select name, value from v$parameter where name in ('sessions','processes','transactions');
NAME VALUE
-------------------- -----
processes 100
sessions 172
transactions 189
Forms :: Read External File Data At A Time Like Bulk Collect Concept?
Jul 23, 2012I have external file like (.csv or .txt) which contain million of record...i wnat to upload it in backend by using form 6i/10g.
by using package text_io.fopen i read it and by using for..loop conventional method insert record into table...but it will take time..
Is there any way like we use bulk collect and FORALL in backend for inserting data into table..
Is there any way to read external file at a time and insert it ...so minimize inserting time....process will become fast.
Save Button On A Form / SQL Plus Transactions
Jan 22, 2013When a user clicks on Save Button on a form, can we know from sql plus (Oracle) all the related queries (insert/Update etc) for that transaction ??
View 1 Replies View RelatedSQL & PL/SQL :: Query To Show Only Transactions For Today
Sep 12, 2010I need to create a report that will show all activity for the day that the report is run. The report will be run or auto-refreshed throughout the day. So, at 10am, 11am, 2pm, 4pm etc. I just need to display quantities received, shipped etc. for that same day. Since the report will not be run at a fixed time, I can't use sysdate - .5 for example.
View 6 Replies View RelatedSQL & PL/SQL :: To Create A Trigger To Prevent Transactions
May 10, 2013Im trying to create a trigger to prevent transactions like insert, update and delete based on two conditions:
1) Friday
2) Between 5pm to 8am
SQL & PL/SQL :: How Many Select / Insert / Update Transactions Executing Per Day In DB
Jan 20, 2011I need to generate a report by showing the select, insert, update transactions count per day.
I have been use V$SYSSTAT veiw but there is not include my requested data exactly!
[URL]
Precompilers, OCI & OCCI :: Using Distributed Transactions With ProC
Jul 7, 2011I found this thread, and recently i want to embedded oci in pro*c for distributed transaction reason.
can pro*c deal with distributed transaction? i want to use mts in pro*c .
PL/SQL :: Commit Loop - Brought Up As To Max Inserts Per Transactions In 11g?
Nov 2, 2012I'm running 11.2.0I am looking at tuning a sql statement, and the question was brought up as to the max inserts per transactions in 11g, and if it exceeds 1000.I haven't found a solid answer yet, but I thought that 10g was higher than 1000.
My first thought was to implement a commit loop on every 1000 rows, as that is how things were handled in the past.But I found an article that talks about redo logs and performance and how it's a horrible practice to do the commit loop.
What I haven't found is what is the better methodology in doing this?My scenario could encounter inserts as much as 20,000 at a time.
Reports & Discoverer :: Retrieving Time Based Transactions?
Aug 6, 2010I have some transactions in my table with date and time.
i want to pass from date, to date and from time , to time as parameter.
when i pass one date and two time parameters, it works fine. but when i try to pass from date and to date (two date parameters) and two time parameters then it does not work accurately.
e.g. i want to pass 05-Aug-2010 and 06-Aug-2010 and time from 08:00:00 and 14:00:00 then it only retrieves data of both dates having only this time range. however i need to get transaction of 05-aug-2010 from 08:00:00 to 06-aug-2010 14:00:00.
Forms :: Session Variable Values Overwritten Between Transactions?
May 23, 2011There are 2 people on separate machines each executing a transaction through the same form, processed through a when-button-pressed trigger.The first session processed correctly. For the second user, the session seems to have picked up the non-PACKAGE variables of the first session in what was passed through to the data base. Values associated with the 2nd session's PACKAGE-based types appear to have passed through correctly.
Hence, the second user's transaction processed with a combination of values from the two sessions, with the second user's PACKAGE-based variables merged with the first user's non-PACKAGE variables. There is no use of context variables. There are some global values, but none of them are used in this trigger.The values in question, that appear to have passed from the first session to the second, are based on contextual LOV selection: after selecting a transaction type, users are prompted to select from a LoV specific to that type. Value property set "Validate from List=>Yes".
The 2nd session's PACKAGE-based values do not correlate to the non-PACKAGE values, leading us to conclude that the latter values somehow came through from the first session. We are running IAS 10g R2 on Oracle 10gR2 (10.2.0.3).Each user session is created as user logs into the application and hence logically there should not be any overlap between sessions of different users concurrently.
I did have a look at the code and predict nothin wrong with the source code since the system has been in use for a few years now and only occurred a couple of times in last few months. Also one more noticeable thing is that the issue is not reproducible. I would believe somethin goin wrong in the middle tear or with the session management. Are there any known issues in session management in the Forms server Or something?
Get Count Of Records Grouped By Another Field From Transactions Table
Nov 5, 2009I have a table that cannot be changed with a field called transaction_reference in the transactions table. This field contains any number of some values in a look-up table called codes.
The table codes contains 'AA', 'BB', 'CC'.
A typical transaction_reference field may look like 'CC BB' or 'AA' or 'AA CC' or 'AA CC BB' - any number, any order.My goal is to get a count of records grouped by another field from the transactions table.
Transactions table example:
transaction_id | transaction_reference | family
---------------------------------------------
1 | AA BB | foo
2 | BB CC | bar
3 | BB | hello
4 | AA CC BB | foo
5 | BB AA | bar
So the results should look like:
family | code | count
foo | AA | 2
foo | BB | 2
foo | CC | 1
bar | AA | 1
bar | BB | 2
bar | CC | 1
hello | AA | 0
hello | BB | 1
hello | CC | 0
If the counts of 0 (like the third to last and last line above) don't show up I'm ok with that.I put together an explode function like this one here but I'm really not sure where to go from here. I can split the transaction_reference, but I'm not sure what to compare it to or how.
I realize that a field in the transactions table for AA, BB, and CC would be ideal, but I can't do that... the powers that be won't let me change the table.
for each exploded segment from transaction_reference
look for it in the codes table
if it exists, add 1 to the count