I have written a purge package that would delete records older than 10 years. Since the data is huge, the purging was taking 14 hours plus. To improve performance, I disabled constraints , deleted records and then reanabled them. This was quite quick but the only problem is rollback. Say for some reason if enabling constraints fails there is no way to rollback as enabling and disabling constraints does an implicit rollback.
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We all know that commit will do the following.
1. Save the Txn Permanently to the database.
2. Release the table locks and
3. Erase the save points.
TABLE NAME:
==========
create table TEST_PREC (NO NUMBER(4,2));
DECLARE
BEGIN
INSERT INTO TEST_PREC VALUES (12.34);
DBMS_OUTPUT.PUT_LINE('the no of records before commit '||SQL%ROWCOUNT);
commit; /* What's happening inside commit */
[code]....
why the SQL%ROWCOUNT is set to zero after commit.
Does the commit, close the implicit cursor?
I am using the following command within a shell scrript to purge files with adrci
adrci exec="show homes"|grep -v : | while read file_line
do
echo "adrci purging diagnostic destination " $file_line
echo "purging ALERT older than $Minutes ..."
adrci exec="set homepath $file_line;purge -age $Minutes -type ALERT"
[code]...
Is there a command I can use to see what will be purged or what has been purged?
I want to purge a table which is having more then 98M rows...here are the details...
Purge Process I followed
---------------------------------------------
Step 1. Created backup table from Main table with required data only
create table abc_98M_purge as
select * from abc_98M where trunc(tran_date)>='01-jul-2011'
-> table created with 5325411 rows
Step 2. truncate table abc_98M
Step 3. inserted all 5325411 rows back to abc_98M from abc_98M_purge using below procedure
DECLARE
TYPE ARRROWID IS TABLE OF ROWID INDEX BY BINARY_INTEGER;
tbrows ARRROWID;
row PLS_INTEGER;
cursor cur_insert is select rowid from abc_98M_purge order by rowid;
BEGIN
open cur_insert;
loop
[code]....
how to purge the alert log and listner log file in 11g.
OS:IBM/AIX RISC System/6000
DB version: 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
I'm currently working on a project which is to archive the old data and then purge the same data from the main table.
Here is a detail description:
There are around 50 odd tables from which I would need to archive the old data(matching certain filter conditions...not date based). Meaning I have to store the data in a temp table. Once stored in temp table then I would have to delete those rows from the main table. This temp table will be later exported and stored on ARchive database(a seperate database). These tables are very huge. One of the table is actually 250 GB in size. And all these tables have many indexes built - both normal and bitmap.The 250 GB size table has 40 million rows that need to be archived and purged. The total number of rows in the table are 540 million.On this table alone there are 50 bitmap indexes and 2 normal indexes. This table is partitioned based on date column.This date column is not used/useful in identifying the old data. There are around 20 tables which are quite similar in size to the above described table. Rest of them are little small when compared to the above table.
We have to execute this activity over a weekend which gives us about 48 hours time to complete the activity. Best possible ways to handle this activity. Most importantly should be able to complete the activity within the specified 48 hour window.
The solution what we are now thinking of is:
1. Create the temp table ---Create tmp_tbl as select * from main_table where <<conidtions identifying old data>>
2. Once the temp table is created. Make copy of indexes that exist on the main table and eventually drop them.
3. Execute a PL/SQL script to perform the bulk delete from main table and commit for every 100000 rows.
4. Once the bulk delete is finished then recreate the indexes on the main table using the copy made at earlier step.
Our main worry is about the step#4. Considering the size of these tables and the number of indexes to be built,we are not sure how long the index re-creation will run for each table.
depending on the possibilities we may have to split the activity in to 2-3 phases spreading across 2-3 weekends. Even then we are not sure whether we will be able to pull off this activity.
The database we are using is Oracle 10g.
I'm working on a Java-based web application and we have unit tests that we use to test all our all code that interacts with the database or code that interacts with our DB code. The Spring framework allows us to perform some DML within a transaction before each test and then rollback the changes. For the most part, this works, however when I run the full suite of unit tests, it will randomly commit data to the database causing the rest of the tests to fail.
will Oracle's auditing let me see where this odd-ball commit is occurring? Is there another way for me to see when data is being committed?
This does not appear to be happening on any of the systems we've deployed, however this is a bit unsettling and would like to know why this is occurring so that we can prevent it from happening in production.
I've tried to use implicit cursor in my pl/sql program and i get an error as following:
DECLARE
*
ERROR at line 1:
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at line 17
Then,I tried to include an exception for it and the error is 'solved'.
DECLARE
d_call_id course.call_id%TYPE;
d_course_name course.course_name%TYPE;
d_term_desc term.term_desc%TYPE ;
d_f_first faculty.f_first%TYPE;
d_f_last faculty.f_last%TYPE;
d_day course_section.c_sec_day%TYPE;
d_time course_section.c_sec_time%TYPE;
d_bldg_code location.bldg_code%TYPE;
d_room location.room%TYPE;
[code]....
By actually the program are suppose to return the records instead or returning the error. I've included the table that i'm trying to retrieve the records from as well.
1) SQL Statements are not using IMPLICIT CURSORS.
2) Only the SQL statements of the PLSQL program create implicit cursors.
what are the main points that these examples are considered cursors? and why are they called explicit and implicit cursor.
explicit
for x in (select * from emp) loop
dbms_output.put_line('emp no: '||x.empno);
end loop;
implicit
select empno
into vEmpno
from empno
where empname = 'SCOTT';
for all we know that these are not clearly defined on the declaration area as cursor.
What is the difference between implicit cursor and explicit cursor in PL/SqL?
And what is ref cursor ?
difference between between these two constructs. Finally when i read the asktom.oracle.com , I was totally confused. The reason is thatTom says...we can retrieve more than one row in implicit cursor. If that would be case, what's the difference between these two cursors?? when to use?? My understanding was implicit cursors" ---> single-row queryExplicit cursors ---> multi-row query Experts
View 10 Replies View RelatedIn my Project, there are many queries have join conditions between Number and Vrahchar2. Will it give any wrong results or Invalid Number exception even the varchar2 column always contains the number data?
Example:
Select * from Table_t1 t1, table_t2 t2
where t1.num_col = t2.var_col
-- Here var_col always hold only numaric data.
i write a select statement in proc that contains 44 columns.
when i precompile it. it is showing the error: implicit conversion of string literal to "char *" is deprecated.when i compile the same select with 40 columns it is not showing any error.
but for more than 40 columns (41-44) it is showing the above error.
My oracle backup via Netbackup failing with error 6 (Netbackup) and i have checked the logs please find the RMAN log file as well.
Script /opt/rman_script/st72_oracle_full.sh
==== started on Tue May 28 15:27:46 SGT 2013 ====
RMAN: /OraBase/V10203/bin/rman
ORACLE_SID: ST72
ORACLE_USER: oracle
ORACLE_HOME: /OraBase/V10203
NB_ORA_FULL: 1
NB_ORA_INCR: 0
[code]....
How can we commit for every 500 rows in pl/sql block.
begin
for i in 1 to 10000
loop
Insert into t1 values(i);
commit;
end loop;
end;
Here I am commiting after all the rows are inserted ,but i want to commit for every 500 rows are inserted .
, which operator is more costly (Commit or Rollback) in terms of performance?
View 5 Replies View RelatedCan commit be used in trigger or not ?
If so, Can it be used directly or indirectly?
How to rollback after commit.
View 5 Replies View RelatedI have this stored procedure and sequences:
create sequence a_seq;
create sequence b_seq maxvalue 26 cycle;
create sequence c_seq maxvalue 1000 cycle;
create or replace
procedure inserta_en_B (numregistros in integer) as
ultimo_año_nuevo date := trunc (sysdate,'year');
dias_transcurridos number(3) := sysdate - ultimo_año_nuevo;
begin
[code]........
First i insert into b 400000 rows using:
execute inserta_en_b(400000));
commit;
But then i need to insert 100000 rows more using the stored procedure and without removing the 400000 rows stored before. I think i need to use the commit clause, but i dont know where.
Can we use commit in a function?
View 10 Replies View RelatedTell me restriction on commit means where this keyword is not used....like i somewhere read in trigger we can't used commit...instead of that we use pragma autonomous_transaction..
but my confusion arise when i see commit used in trigger in our database table....
is commit used in trigger , if not then what will be use...
Another one is commit used while creating procedure or function?
I am using commit in a trigger as given :
create or replace
trigger comt after insert on tbl_city
declare
pragma autonomous_transaction;
begin
commit;
dbms_output.put_line('Value is committed');
end;
Now when I perform an insert in tbl_city---->trigger fires properly and gives output stream. But If I perform rollback now --->there are the data rollbacked in table.
why?I think after commit(which is in trigger associated at insert to table)there should no any rollback in table.
I am using the SQL-Developer to access and manipulate a database. I am not very sure about the format of the database (I'm new to databases), but I had to setup the TNS-folder.
Anyway, I guess the problem is the same for any database.
I am having a table with the BOM (bill of material) positions of certain articles and I want to change the BOM quantities of some of the articles. What happens is that I can only change some of the rows. For other rows I get the message like (it is in German, so I try to translate it):
"data was commited in another/the same session already. row cannot be updated"
This error message looks like there is somebody else locked on the database and manipulating it, correct? Is that possible to see somewhere which processes/people are currently accessing to the database?
I saw that there is one process/another database, which is having the authorization to access to the database. But where can I check if this process is accessing to the database?
BTW: I used to do this process before, and it worked. I had been able to manipulate arbitrary entries on the database. I guess that the process or the person, mentioned above, hasn't been accessing to the database at that time.
I have made a correlated update statement using rowid. Find my attachment. Its updating all columns which i wanted but issue is that its not updating in 1st commit.
Suppose 6 rows is to be updated, then in 1st commit its updating 1 record, then in 2nd commit its updating 2nd record and so on. And in Toad its showing 6 rows updated in 1st commit, then 5 rows updated in 2nd commit and 1 rows updated in last record. I want that all records to be updated in first commit only.
why commit is not allowed in trigger?
View 3 Replies View RelatedI am calling a child form from a parent form.It works perfectly if the parent form is adding records and while entering records when i press the button to call the child form, the whole things work perfectly according to plan.
The problem begins when i run execute query command in the parent form and then call child form then it does not "commit_form". So this is my problem that child form does not work perfectly when parent form is being called in execute_query procedure.
My working:
1) I read in the documentation that When parent form status is query_only then child will also have the same mode regardless of the parameter given in call_form.So i checked the :SYSTEM.FORM_STATUS of both the parents and child form,it shows "CHANGED" hence this point is covered. (dont know how come the parent form is in changed status but at least it is doing my work)
2) I further read and found that Commit_form procedure make the :SYSTEM.FORM_STATUS as QUERY. Here i am facing problem as in child form when i make changes and press commit form. Then before commit_form and after commit_form the :SYSTEM.FORM_STATUS results in "CHANGED".You can see this in the following code which i have written in save button.
message(:SYSTEM.CURRENT_FORM || ' a ' ||:SYSTEM.FORM_STATUS); pause;
commit_form;
message(:SYSTEM.CURRENT_FORM || ' b ' ||:SYSTEM.FORM_STATUS); pause;
IF Form_Success THEN
Commit;
IF :System.Form_Status <> 'QUERY' THEN
Message('Error prevented Commit');
RAISE Form_Trigger_Failure;
END IF;
else
message('FAIL');
END IF;
exit_form;
then at last exit_form module shows that" i have unsaved data in the form" save Yes-No-Cancel?
I hv a situation where a webservice interacts with the database.
Here the webservice will first make a request to database for some operation but i dont want the database to commit changes in first request itself. A response will be sent to webservice further a second request will be sent to database for committing the changes. So can that be done?
What would be the best way to Commit after every 10 000 records inserted from one table to the other using the following script :
DECLARE
l_max_repa_id x_received_p.repa_id%TYPE;
l_max_rept_id x_received_p_trans.rept_id%TYPE;
BEGIN
SELECT MAX (repa_id)
INTO l_max_repa_id
[code].........
After committing form i want to clear few item and retain few item and make the form ready for next record to be inserted along with retained item.
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