SQL & PL/SQL :: How To Create Single Table Cluster
Mar 6, 2010
I have one table called posh, which has about 50,000 ids (millions of rows) so far. It is currently at about 50 gb. So each series of rows for a particular id is about 1 mb.
CREATE CLUSTER posh_cluster (id int)
SIZE 2M
STORAGE (initial 2000K next 2000K)
PARALLEL 4;
CREATE INDEX posh_cluster_index ON CLUSTER posh_cluster;
[code].......
According to the Oracle documentation size is "the average cluster key size", I am not really sure what that means. Is this the 1mb in posh table space I am using for each series of rows for an id, or the space used for the index? Secondly, the storage parameter for 'CREATE CLUSTER' should be what?
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Jul 11, 2012
I had installed grid infrastructure for a cluster, and RAC database. The ASM is the storage option. The configurations as follows:
Grid Home: /u01/grid/app
Oracle RAC Home: /oracle/db1/app/product/11.2/dbhome1
Can I have another RAC Database to use the existing Grid infrastructure ? The second RAC database will have different owner than db1.
The configurations as follows:
Grid Home: /u01/grid/app
DB1 Oracle RAC Home: /oracle/db1/app/product/11.2/dbhome1 and Database Name: RACDBA so the current instances are RACDBA1 and RACDBA2
DB2 Oracle RAC Home: /oracle/db2/app/product/11.2/dbhome2 and database name: RACDBB so the future instances will be RACDBB1 and RACDBB2
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Nov 15, 2012
Is it possible to create a table without any single column in it?
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Nov 16, 2011
i have 60 tables i want to create all columns in single table how ? and how to create master table
can u explain briefly what is master table? and why we are using master table in companies..
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Jun 29, 2012
I am trying to create a rac setup on oracle 10.2. through NFS cluster configuration .i succeeded with the installtion of cluster configuarion and installation of oracle software ,but when i am trying to create database ,
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Feb 20, 2012
I have table property and flat , in both of these tables I have cvp_id common colomn .Now I want to add cluster on this colomn so how can I add cluster to table which is already exists.
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Aug 4, 2010
Difference between Normal Index on Table and Cluster Index on Table?
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Oct 19, 2010
creating a single row from 2 rows based on the first column which is not unique.
CREATE TABLE RELATIONSHIP
(
RelationshipID number not null,
DepartmentID number not null
)
INSERT INTO RELATIONSHIP VALUES (1,1)
INSERT INTO RELATIONSHIP VALUES (1,2)
INSERT INTO RELATIONSHIP VALUES (2,3)
INSERT INTO RELATIONSHIP VALUES (2,4)
Im trying to get something like
RelationshipID DepartmentID1 DepartmentID2
1 1 2
2 3 4
There are a few more tables that would need joining, which I can provide but at the moment I'm struggling with this part, I know there is a problem with the formatting here but not sure how to get tabs correctly
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Jul 11, 2012
Can we create non-cluster index on a clustered index?
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Jul 25, 2010
Is it possible to create two objects in different schemas in a single database.
For example in Schema A, table "T1" is there, is to possible to create a table with the same name "T1" in Schema B.
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Jul 12, 2012
How to create more than 1 body in a single region. E.g i created report region and under body tag in region all other charts reports are created.
i dont want that .. i want to create different bodies in a single region.
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Apr 29, 2011
What is the difference between CREATE EXTERNAL TABLE Vs CREATE TABLE .?
Is CREATE EXTERNAL TABLE included in CREATE TABLE?
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Apr 18, 2011
I have database in single server. I already have ORACLE_SID=stagedb. So i want to create new sid and named as proddb.Is it possible have multiple db in single server? This server not running as RAC. It run as single only.
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Oct 12, 2010
Below is my trigger:
CREATE OR REPLACE
TRIGGER AR_BANDS_TEST
BEFORE INSERT OR DELETE OR UPDATE ON FEE_BANDS
REFERENCING OLD AS OLD NEW AS NEW
FOR EACH ROW
BEGIN
[code]...
I want the old and new values to come in a single row of the table while inserting in trigger like below:
OLD_FEE_RU OLD_FEE_BANDS_ID OLD_RATE_NUMBER OLD_RATE_PERCENT NEW_FEE_RU NEW_FEE_BANDS_ID NEW_RATE_NU
---------- ---------------- --------------- ---------------- ---------- ---------------- -----------
TESTALL 1 0 1 TESTALL 1 0
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Jan 24, 2011
Is there any limitations for the number of column defined inside the table?
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Nov 16, 2012
I am trying to load a single column into a Table. Below is the ctl file:
OPTIONS (ERRORS=10000)
LOAD DATA
TRUNCATE
INTO TABLE "ECOMM"."CC_ECOMM"
TRAILING NULLCOLS
(EMAIL_ID)
Calling loader:
sqlldr silent=ALL userid=username/password@DB control=/home/DEV/control/CC_ECOMM.CTL log=/home/DEV/log/Unsubs.log bad=/home/DEV/log/Unsubs.bad discard=/home/DEV/log/Unsubs.dis data=/home/DEV/files/CC_ECOMM.TXT
Though the count in the Table after load is the same as the input file, they are all NULL.
I tried adding FIELDS TERMINATED BY X'A' for new line and also FIELDS TERMINATED BY X'D' for carriage return. Both times bad file was created and the records that were loaded were again NULL.
The input file has a list of emails:
iatraveler2008@aol.com
iaz65@aol.com
2blue2brown@comcast.net
2c3mwilson@embarqmail.com
abigailolschan@comcast.net
imisskoco@aol.com
I tried FIELDS TERMINATED BY X'10' and FIELDS TERMINATED BY X'13' too for new line and carriage return respectively. This time there were no bad file created, but the Table has Null values.
Log File contents:
Number to load: ALL
Number to skip: 0
Errors allowed: 10000
Bind array: 64 rows, maximum of 256000 bytes
Continuation: none specified
Path used: Conventional
Silent options: FEEDBACK, ERRORS and DISCARDS
[code]....
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May 27, 2010
How can i copy a single column from one table to another. Table 1 has a column with data in it, table 2 has the column but is empty, i want to copy data for a single column from table1 to table 2. By the way these table have multiple columns.
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Apr 30, 2010
I am running 3 for loops in continuation. These loops retrieve me 63 values. I need to insert 1 single row in a table and then exit from the same. Moreover when i run the same loop again I need to insert 2nd value fo the second row in the table. The table is having a unique key which does not allow me to load redundant data.
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Dec 11, 2011
how to convert a single 'ragged' table like:
MAIN_KEY SUB_KEY DATA
ABC 1 A
ABC 2 B
ABC 3 C
DEF 1 X
where:
MAIN_KEY and DATA are indeterminate, and
SUB_KEY = 1 .. n [always starts with 1 for a given MAIN_KEYD]
into:
MAIN_KEY SUB_KEY DATA
ABC 1 A
ABC 2 B
ABC 3 C
ABC 4 {null}
ABC 5 {null}
DEF 1 X
DEF 2 {null}
DEF 3 {null}
DEF 4 {null}
DEF 5 {null}
in the case where n = 5?
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Sep 2, 2011
i need a query for update..the logic is
i have to update a single column(x.c) in x table.here the condition is x.a is not null and x.b is not null x.d is null then update x.c=x.b for each row.
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Oct 29, 2012
{code{
i want to apply merge stmt on single table.
CREATE TABLE TEST11(TNO NUMBER(5), TVAL VARCHAR2(100), TID VARCHAR2(10));
INSERT INTO TEST11 VALUES(1,'VIJAYA','TEST');
INSERT INTO TEST11 VALUES(2,'VIJAYA','TEST');
INSERT INTO TEST11 VALUES(3,'VIJAYA','TEST');
INSERT INTO TEST11 VALUES(4,'VIJAYA','');
INSERT INTO TEST11 VALUES(5,'VIJAYA','');
[Code]....
My requiremen is if record is exists then i wan to update some value, if record not existes the i wan to insert new record
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Mar 16, 2013
I created a single table hash cluster like this :
create tablespace mssm datafile 'c:appmssm01.dbf' size 100m
segment space management manual;
create cluster hash_cluster_4k
( id number(2) )
size 8192 single table hash is id hashkeys 4 tablespace mssm;
-- Created a table in cluster with row size such that only one record fits one block and inserted 5 records each with a distinct key value
CREATE TABLE hash_cluster_tab_8k
( id number(2) ,
txt1 char(2000),
txt2 char(2000),
txt3 char(2000)
)
CLUSTER hash_cluster_8k( id );
[code]....
If I issue the same query after creating unique index on hash_cluster_tab(id), the execution plan shows hash access and single I/O (cr = 1).Does it mean that to have single I/o in a single table hash cluster, we have to create unique index? Won't it create additional overhead of maintaining an index?
What is the second I/O needed for in case unique index is absent?
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Nov 19, 2010
i WANTED TO SIMPLIFY THIS CODE SO THAT I NEED NOT DO ALL THESE manipulations but still get the result of
UNI_CUG_SITE,
Create Table CUG_SITE compress nologging As
Select C_Key, S_Key From A
group by C_Key, S_Key
/
commit
/
--Creating a table for all Single Sited Customer ---
[code]........
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Mar 21, 2012
I have a employee table with the below format
EMP
EMPID DEPID
1A
2A
2B
1B
4A
5B
5A
6C
7A
8D
Now I need to start with the employee 1 . As we can see the emp 1 is mapped to dept A and also with multiple dept. Similarly dept id is mapped to multiple emp.
I need the output as below (many to many I.e. cross referencing)
EMPID DEPIDGroup
1A A1
2A A1
2B A1
1B A1
4A A1
5B A1
5A A1
6C B1 -- new group as the emp and dept are not mapped previously
7A A1
8D C1
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May 25, 2012
How to update two table column in single query ?
example :
update table1 t1 ,table2 t2
set t1.column = 'Yes',t2.column='Yes'
where t1.emp_code =t2.emp_code ;
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Jan 27, 2012
Actully i am updating two table of data.. but below error message came..
update (select ename, dname
from emp e, dept d
where e.deptno = d.deptno
and empno = 7788)
set ename = 'X', dname = 'Y'
/
Error at line 1
ORA-01776: cannot modify more than one base table through a join view
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Jan 23, 2013
we are using oracle 11.2.0.3 on linux platform and was wanting to know if there is a way to backup just a single table partition using rman? If so does the database need to be running in archivelog mode in order to do this with the database online?
This is a database that has one single huge table that is partitioned by day and we are attempting to export out daily partitions using datapump export so that we can archive them to tape but the disk system we have is not able to keep up and the export of roughly 128gb is taking over 8 hours and is failing because the undo is aging out. We would like to bypass writing the partitions out to disk and just stream them to tape if at all possible?
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Jul 27, 2012
I have a flat file as source wherein I am getting values like
Comp_id, Comp_name, ISIN, column_name, column_value
The structure is like this may contain multiple records like Comp_id, Comp_name, ISIN will be same, but column_name will contain the column_name to which its corresponding column_value needs to be populated to.
E.g. of Feed File -
Comp_id, Comp_name, column_name, column_value
1,HSBC,branch_name,HSBC-DELHI
1,HSBC,branch_add,24-Lajpat Nagar
1,HSBC,branch_phone,2322322
2,HSBC,branch_name,HSBC-MUMBAI
2,HSBC,branch_add,24Andheri
2,HSBC,branch_phone,4445221
2,HSBC,branch_postalcode,400023
Target table structure
Comp_id, Comp_name, branch_name, branch_add, branch_phone, branch_postalcode
I need to insert the above data to a table by selecting data from above scenario.
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Jan 18, 2012
The challenge I am currently facing is finding the maximum value of two independent columns of a single table. Here is the structure of the table:
[FiscalYear] [AccountingPeriod]
------------ ------------------
[2012] ------------- [2]
[2011] ------------- [12]
[2012] ------------- [1]
What I need to be able to do is to:
1) Determine the maximum value present in column FiscalYear, and then the maximum value available for this FiscalYear under the column Accounting Period.
I can do this fairly easy on Microsoft SQL server, but so far was not able to do this easily on Oracle database. My other observation is that using the MAX function on Oracle is very slow (even with thse fields being indexed). Is it possible to run this query on Oracle with only one pass through the table where the returned result will show 2012 for FiscalYear, and 2 for Accounting Period?
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Jan 18, 2012
I have two table master and detail i want to update both tables with update command in master i want to update voc_date and in detail i want to update item_code in one command but i am not understand how to control this query for example when i use this command
1). update master set voc_date=sysdate it works very well
2). update detail set item_code='12345' it also work very well but i want to update master,detail table in one query
pls guide me with some query example
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