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?
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 ,
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.
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)
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
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.
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
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.
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.
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.
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
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?
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]........
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
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?
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.
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?
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
