I am trying to add a new column in a table and insert data from another column of same table.
alter table POSITION add INT_MK_DATA_ID number(10,0) null;
update POSITION set INT_MK_DATA_ID = INST_MARKET_DATA_ID;
commit
As there are huge number of records in the POSITION table ...its taking for ever to execute this query.
Here is my problem, i need to create some files with my own format(let say 5000 records each) from a huge data table (May contain 5 Million records). And i want this creation to be multi threaded.
so how can i form queries efficiently to fetch records like 1..5000 and 5001..10000 and so on. I can form some thing like select * from table where rownum<5000 and not exists ( already fetched records) . but it is not the efficient one.
shall we stop inserting data into a table before it inserting using Trigger?
View 3 Replies View RelatedBelow is my requirement.
Need to change the precision of a column in a existing table. Statistics about the table
* has over 130 columns
* More than 300 million records
* Column to modify is #121 which has data
* No primary key defined
Since the column has data, it is not possible to modify with a simple Alter.
Second option - create temp column in same table, update from original, put null in original, alter, update back from temp, drop the temp column. This approach is very expensive and time consuming.
Also the Column ID needs to preserved as #121.
I am trying to delete 3 million records of data from huge table which already consists of 3 billion records.
This is hitting performance of DB and halting other activities of my users. Is there any easy way to delete such data fast. I have tried with forall delete but it is even taking lot of time.
I am using oracle 11g Express Edition, I have a file of .csv forma, Which has a data of size 500MB which needs to be uploaded into oracle table.
Which would be the best method to upload the data into table. Data is employee ticket history which is of huge data.
How to do the mass upload of data into oracle table.
I have two tables with two columns of each table in my Oracle Version :Oracle 9.2.0.1.0
TEST22:
-----------
|sno |sname |
-----------
| | |
-----------
TEST22P:
---------------
| col1 | col2 |
|---------------|
| sno | 1 |
| sname | arun|
---------------
Required outcome is
TEST22:
----------
|no | name |
|----------|
|1 |arun |
----------
Also this should be applicable for more than one value in the column col2 of table TEST22P.
ex:-
TEST22P:
--------------------
|col1 | col2 |
|--------------------|
|sno | 1,2..n |
|sname | arun,ajay..n|
--------------------
I used decode & pivot insert for this,but the result is a failure.
SQL>INSERT INTO test22 (no,name) SELECT DECODE(col1,'n',col2),DECODE(col1,'name',col2) FROM test22p;
SQL>
sno sname
--------
1 null
null arun
AND
SQL> INSERT ALL
2 INTO test22 VALUES(no)
3 INTO test22 VALUES(name)
4 SELECT DECODE(col1,'n',col2),DECODE(col1,'name',col2) FROM test22p;
INTO test22 VALUES(name)
*
ERROR at line 3:
ORA-00904: "NAME": invalid identifier
I am trying to insert a column into a variable from a trigger.
Here is the code that i have:
CREATE OR REPLACE TRIGGER BUYER_after_update AFTER UPDATE ON buyer
FOR EACH ROW
DECLARE
v_key varchar2(10);
BEGIN
select ID into v_key from buyer;
insert into message_log_table (table_name, message_comments)
values
('Buyer', 'Buyer '||v_key||' has been updated');
end;
/
When I run the above I get the following compiler error:
[Error] ORA-00904 (6: 12): PL/SQL: ORA-00904: "ID": invalid identifier
Since ID is defined in my BUYER table I do not understand what the error means.
Here is my create table statement:
CREATE TABLE BUYER
(
ID VARCHAR(50) NOT NULL PRIMARY KEY,
FNAME VARCHAR(50) NOT NULL,
LNAME VARCHAR(50) NOT NULL,
ADDRESS VARCHAR(50) NOT NULL,
CITY VARCHAR(50) NOT NULL,
STATE VARCHAR(2) NOT NULL,
ZIP_CODE NUMBER(5) NOT NULL
);
I have a table created with the following code:
CREATE TABLE CLIENT
(
CLIENT_ID NUMERIC(2),
CLIENT_NAME VARCHAR2(25),
CONTACT_LAST_NAME VARCHAR2(15),
[Code]...
I have altered the table to have the following:
ALTER TABLE CLIENT
ADD CLIENT_CITY VARCHAR2(25);
I am trying to insert new data into said table that was updated:
INSERT INTO CLIENT
(CLIENT_CITY)
VALUES
('Mount Pearl')
WHERE CLIENT_ID = 1;
Then I get the following error:
Error starting at line 1 in command:
INSERT INTO CLIENT
(CLIENT_CITY)
VALUES
('Mount Pearl')
WHERE CLIENT_ID = 1
Error at Command Line:4 Column:15
Error report:
SQL Error: ORA-00933: SQL command not properly ended
00933. 00000 - "SQL command not properly ended"
*Cause:
*Action:
I have an XML of the following format:
<data>
<students>
<student>
<studentname>Raymond<studentname>
<StudentId>1</StudentId>
<StudentAge>11</StudentAge>
<StudentMark>0</StudentMark>
</student>
</students>
Now i have to insert this xml into DB , the table consist of following columns ( row number , property name , value ) Expected out put is (1,student name,Raymond) ,( 1, studentid , 1) ( 1, studentAge, 11) (1,Studentmark , 0) The challenges here is
1. how to get the tag names and populate the property name column ?
2. The number of properties for a student can be variable , How can i deal with them ?
I am exploring the differences between OBJECT & RECORD. As i am still in process of learning, I found that both are structures which basically groups elements of different datatypes or columns of different datatypes, one is used in SQL and other is used in PL/SQL. Below i am trying to insert data into an table of type object but i am unsuccessful.
CREATE OR REPLACE type sam as OBJECT
(
v1 NUMBER,
v2 VARCHAR2(20 CHAR)
);
---Nested Table---
create or replace type t_sam as table of sam;
--Inserting data----
insert into table(t_sam) values(sam(10,'Dsouza')); Error Message:
[code]........
I am trying to insert huge data into another huge table which is almost taking around 2-3 hrs. See my below query
INSERT /*+ APPEND *//*+ NOLOGGING */ INTO DB1.Table1 SELECT * FROM DB2.Table2 ;
COMMIT;
Both Table1 and Table2 have same structure and table1 is master table having 100 Billion records and table2 having 30 Million records. This is a direct insert where each day this operation carried.
I have a form that has one text box in it, and I want this value to be inserted into a table called Staff Name, which has only one column, but im unsure as to how I would get my SQL statement to pick up this value.
I tried:
begin
insert into StaffName values ('addstaffmember');
end;
Add staff member is the name of the text box. this statement compiled but when I ran the form and tried to click save it would not work.
using FORALL for inserting data into table.
Below pl/sql works fine when we write all the cursor data together:
DECLARE
TYPE t_rec IS TABLE OF T%ROWTYPE;
l_tab t_rec;
CURSOR cur IS SELECT a,b FROM t;
BEGIN
[Code]...
but I want to insert including some constant value while inserting the data like
DECLARE
TYPE t_rec IS TABLE OF T%ROWTYPE;
l_tab t_rec;
CURSOR cur IS SELECT a,b FROM t;
BEGIN
[Code]...
How to do this by using forall, or how to do without hiting performance ( more than 5000 rows i have to write.
how to read the excel data and insert into tables without using SQL loader. i tried using OLE2 package,but i am getting an non-oracle exception. even i tried using CSV format. but i couldn't make it.
View 3 Replies View RelatedI need to insert data in Table A from Table B where most of the fields are identical and might some of the fields will be more in Table A.
ex: Table A: a,b,c,d,e,f
Table B: a.b,c,g,h
How to insert this using user_tab_columns in cursor and if I am giving the i/P as my table names . This needs to be configurable and reusable rather i mention all the fields in my logic.
Scenario:
Our application is using a two instance, one for the live active data and the other for the reports data. We have a process which moves the data from the live instance to reports instance every night. In a single db environment the process is working without any issues. However when we move to the RAC environment the reports db's (insert) in large table get locked and we are unable to insert data to the reports db.
What we are performing is:
Insert into my_table_rpt select * from may_table_live@db_link_to_livedb;
Issues:
my_table_rpt get locked
We have found the workaround by disable locking in destination and subsequent to the insert enable locking
ALTER TABLE my_table_rpt DISABLE TABLE LOCK;
Insert the data to the reports database table
Then
ALTER TABLE my_table_rpt ENABLE TABLE LOCK
Question:
Why does the large destination table (my_table_rpt) get locked in the RAC environment?
I am trying to drop a column from a huge partitioned table (non compressed including partitions). I am working on 11gR2 database for information.
i used below approach
1. alter table <tab_name> set t1 unused column;
2. alter table <tab_name> drop unused columns;
then i got the below error message
ORA-39726: unsupported add/drop column operation on compressed tables
First statement did work i could be able to add another column with the same name but still don't want the unused column on the table.
I want to drop a column in a huge table which contain about 420,000,000 rows,i use the alter table drop coumn command to execute,and found it takes a long time and generate huge redo.
Is there any quickly way to drop a column in a huge table?
I have 2 questions, because they can be inter-related I am posting it in a single post. These queries are related to Oracle(PL\SQL).
1. I am trying to increase the size of a field in a table which has almost 2 million records and the query for alteration runs for almost and hour and rollsback, wondering is there a better way of doing it.
2. I have modified the size of a field in a table from Varchar2(10) to Varchar2(20), now when I tried to rollback the modification it is not letting me to change the size from Varchar2(20) to Varchar2(10). No data has been inserted after the modification.
I have 2 questions, because they can be inter-related I am posting it in a single post. These queries are related to Oracle(PLSQL).
1. I am trying to increase the size of a field in a table which has almost 2 million records and the query for alteration runs for almost and hour and rollsback, wondering is there a better way of doing it.
2. I have modified the size of a field in a table from Varchar2(10) to Varchar2(20), now when I tried to rollback the modification it is not letting me to change the size from Varchar2(20) to Varchar2(10). No data has been inserted after the modification.
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 have table which contains huge data. around 12 lakhs records. when I use sum function on accountname and docdate it gives wrong value. once I restart the server it gives the correct value. one or two days it gives correct value after that again I get the same problem. If I restart again it gives correct value.
I use Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 64 bit server on Linux.
extract a huge amount of data from a couple of views... the problem is that they want it in TXT files with fixed record length. There will be like 6 files, for a total amount of about 10GB.
export those tables in the fastest possible way? If I'm not mistaken exp and expdp can't create txt files, so do I really need to use utl_file or spool?
I need to read a huge number of rows, say in lakhs and then need to populate it in data block. Since it is having huge data am never able to run the form. it hangs after some time. when i test with few rows it is working. so no problem in coding.
View 4 Replies View RelatedI have some tables. TABLE1 contains columns called query_id and a column called List_name TABLE2 holds a list of data and the TABLE_NAME = value in TABLE1 held under LIST_NAME TABLE3 contains column with Query_ID and other info.
Is it possible to grab the entry in TABLE1 under LIST_NAME as a TABLE_NAME in a data source?
I have two tables
table1
col1.....................................col2
primary key................ foreign key refer to col2 in tab2
table2
col1 ........................................... col2
foreign key refer to col1 in tab1 ............ primary key
now my question is how to insert data in to the two tables
I have a table in oracle sql developer showing years, IDs and attendance etc I'm wanting to create a report based on this table but have encountered a problem with the years.
The years currently run from 2006 to 2009 and the problem is that some of the IDs are only present for say 2007 and 2008, thus leaving nothing for 2006 and 09. This in turn creates problems in the report.
What i would like to do is in the table, for each ID that is missing any years, is to insert a single row with just the ID and year so that in the report it will show a blank instead of nothing at all. So for the above example i would have numbers for 2007 and 2008 and for 2006 and 2009 there would just be a space.
I am inserting XMLTYPE data using DBLINK I am getting the following error.
INSERT INTO APSP.SALES_HISTORY@APSP_LINK
SELECT * FROM KMBS.SALES_HISTORY
ORA-22804: remote operations not permitted on object tables or user-defined type columns
Source table structure
Name Null? Type
----------------------------------------- -------- ----------------------------
SC_NO NOT NULL NUMBER(25)
LT_DATE TIMESTAMP(6)
METHOD XMLTYPE
Target table structure(another DB)
Name Null? Type
----------------------------------------- -------- ----------------------------
SC_NO NOT NULL NUMBER(25)
LT_DATE TIMESTAMP(6)
METHOD XMLTYPE
how to insert XMLTYPE data using DBLINK.
create table stg1(x number, y number);
create table stg2(x number, y number);
create table stg(x number, y number);
I want to insert data from stg1, stg2 into stg
Instead of writing two insert statements, I want to write only one in a for loop to insert data into stg from stg1 and stg2
I tried this
begin
for i in 1..2 loop
insert into stg(x,y) select stgi.x, stgi.y from stgi;
end loop;
end;
it gives me table does not exist error:
so by stgi, i mean it should take stg1, stg2 etc