I am creating a table with tablespace:
CREATE TABLE SALARY.....
IN ACCOUNTING INDEX IN ACCOUNT_IDX
Where will the Accounting and Account_IDX be created?
The script that you have above will create SALARY in the ACCOUNTING tablespace, with indexes for that table in ACCOUNT_IDX tablespace.
The ACCOUNTING and ACCOUNT_IDX tablespaces need to be created in a separate script that has CREATE TABLESPACE statements.
If you look at the syntax for CREATE TABLESPACE, the USING part of the statement will tell DB2 where to put the files for the tablespace.
DB2 Create Tablespace Reference
Related
DECLARE GLOBAL TEMPORARY TABLE SESSION.TEMP_EMP (EMPNO CHAR(6));
I get error :
A table space could not be found with a page size of at least "4096" that authorization ID "A" is authorized to use.. SQLCODE=-286, SQLSTATE=42727, DRIVER=4.19.56
I use CLP to configure :
db2 connect to sss
db2 create bufferpool bp8k pagesize 8K
db2 create tablespace data pagesize 8K bufferpool bp8K
db2 terminate
I create above temporary table again , but still get error. I create temporary table from IBM data studio. The database sss is created by command create database sss without any more parameters. Are there any problems if i change tablespace and bufferpool. Because i dont want to change default parameters of database. It harms my database
Temporary tables need a user temporary tablespace (not a regular one you created)
Check out this docs about temporary tables
Here is how you can create a temporary tablespace
How do we map the logical table to the tablespace?
Does Postgres automatically creates tablespaces when we create a table or a schema?
Tablespaces and schemas are independent from each other: the first concerns the physical placement of the table, the second the namespace.
PostgreSQL automatically creates a tablespace: it is called pg_default and is located in the base subdirectory of the data directory.
All tables you create are placed there unless:
You use the TABLESPACE clause of CREATE TABLE to place it elsewhere.
The table is in a database with a different tablespace.
You set the default_tablespace parameter to a different tablespace.
Tablespaces are rarely needed, and usually it is best to keep all tables in the default tablespace.
How can I check if tablespace exist in DB2 z/os.
I have to create table RMPOLICY
My task is create script for update database. Update will create table and auxiliary table.
For that task I have to make 4 steps:
1. create tablespace for table
2. create tablespace for auxiliary table
3. create table
4. create auxiliary table
I will be great if I can check all this step for completed before. It posible to check if table exist with
SELECT COUNT(*) INTO V_ALREADY_EXIST FROM SYSCAT.TABLES WHERE UPPER(RTRIM(TABNAME)) = UPPER(RTRIM('RMPOLICY'));
But I don't know how to check if tablespace exist.
Can you please help to determin this information from script?
It sounds like you're looking for SYSIBM.SYSTABLESPACE.
We have got some DDLs for our schema. These DDLs create tables and indexes in a given tablespace. Something like:
CREATE TABLE mySchema.myTable
(
someField1 CHAR(2) NOT NULL ,
someField2 VARCHAR(70) NOT NULL
)
IN MY_TBSPC
INDEX IN MY_TBSPC;
We want to reuse this DDLs to run some integration tests using APACHE DERBY. The problem is that such syntax is not accepted by DERBY. Is there any way to define a kind of default tablespace for tables and indexes, so we can remove this 'IN TABLESPACE' statements.
There is no deterministic way of defining a "default" tablespace in DB2 (I'm assuming we're dealing with DB2 for LUW here). If the tablespaces are not explicitly indicated in the CREATE TABLE statement, the database manager will pick for table data the first tablespace with the suitable page size that you are authorized to use, and indexes will be stored in the same tablespace as data.
This means that if you only have one user tablespace it will always be used for both data and indexes, so in a way it becomes the default. However, if you have more than one tablespace with different page sizes you may end up with tables (and their indexes) in different tablespaces.
For one of my issue, I am trying to understand the functionalities of below DB2 entities,
System Temporary table space.
Page Size.
Table Space.
Buffer Pool.
And below is my observation,
There is a TableSpace linked to a table in the DB2 table syscat.tables
The TableSpaces are linked to BufferPool with the relation defined in syscat.tablespaces
System Temporary table space is the table space that the DB might use while executing the query.
Page Size is an unit that defines the limit of a TableSpace and says how much data can a TableSpace can hold.
Is there something wrong in my above understandings? And when I excute a query how does the DB chooses which TableSpace to choose?