Transportable Tablespaces

Transportable Tablespaces

Transportable tablespaces were introduced in Oracle 8i to allow whole tablespaces to be copied between databases in the time it takes to copy the datafiles. In Oracle 8i one of the restrictions was that the block size of both databases must be the same. In Oracle 9i the introduction of multiple block sizes has removed this restriction. In this article I will run through a simple example of transporting a tablespace between two databases.

Setup
Source Database
Destination Database
Cross-Platform Tablespace Conversions
Related articles.

Oracle Data Pump in Oracle Database 10g (expdp and impdp)
Data Pump Enhancements in Oracle Database 11g Release 1
SQL Developer 3.1 Data Pump Wizards (expdp, impdp)
Cross-Platform Tablespace Conversion
Setup

For this example I'm going to create a new tablespace, user and table to work with in the source database.

CONN / AS SYSDBA

CREATE TABLESPACE test_data
DATAFILE '/u01/app/oracle/oradata/DB11G/test_data01.dbf'
SIZE 1M AUTOEXTEND ON NEXT 1M;

CREATE USER test_user IDENTIFIED BY test_user
DEFAULT TABLESPACE test_data
TEMPORARY TABLESPACE temp
QUOTA UNLIMITED ON test_data;

GRANT CREATE SESSION, CREATE TABLE TO test_user;

CONN test_user/test_user

CREATE TABLE test_tab (
id NUMBER,
description VARCHAR2(50),
CONSTRAINT test_tab_pk PRIMARY KEY (id)
);

INSERT /*+ APPEND */ INTO test_tab (id, description)
SELECT level,
'Description for ' || level
FROM dual
CONNECT BY level <= 10000; COMMIT; Source Database For a tablespace to be transportable it must be totally self contained. This can be checked using the DBMS_TTS.TRANSPORT_SET_CHECK procedure. The TS_LIST parameter accepts a comma separated list of tablespace names and the INCL_CONSTRAINTS parameter indicates if constraints should be included in the check. CONN / AS SYSDBA EXEC SYS.DBMS_TTS.TRANSPORT_SET_CHECK(ts_list => 'TEST_DATA', incl_constraints => TRUE);

PL/SQL procedure successfully completed.

SQL>
The TRANSPORT_SET_VIOLATIONS view is used to check for any violations.

SELECT * FROM transport_set_violations;

no rows selected

SQL>
Assuming no violations are produced we are ready to proceed by switching the tablespace to read only mode.

SQL> ALTER TABLESPACE test_data READ ONLY;

Tablespace altered.

SQL>
Next we export the tablespace metadata using the export (expdp or exp) utility. If you are using 10g or above you should use the expdp utility. This requires a directory object pointing to a physical directory with the necessary permissions on the database server.

CONN / AS SYSDBA
CREATE OR REPLACE DIRECTORY temp_dir AS '/tmp/';
GRANT READ, WRITE ON DIRECTORY temp_dir TO system;
We can now export the tablespace metadata.

$ expdp userid=system/password directory=temp_dir transport_tablespaces=test_data dumpfile=test_data.dmp logfile=test_data_exp.log
If you are using a version prior to 10g, you do not need the directory object and your command would look something like this.

$ exp userid='system/password as sysdba' transport_tablespace=y tablespaces=test_data file=test_data.dmp log=test_data_exp.log
Copy the datafile to the appropriate location on the destination database server. Also copy the dump file to a suitable place on the destination database server. You may use binary FTP or SCP to perform this copy.

The source tablespace can now be switched back to read/write mode.

ALTER TABLESPACE test_data READ WRITE;

Tablespace altered.

SQL>
Destination Database

Create any users in the destination database that owned objects within the tablespace being transported, assuming they do not already exist.

CONN / AS SYSDBA

CREATE USER test_user IDENTIFIED BY test_user;
GRANT CREATE SESSION, CREATE TABLE TO test_user;
Now we import the metadata into the destination database. If you are using 10g or above you should use the impdp utility. This requires a directory object pointing to a physical directory with the necessary permissions on the database server.

CONN / AS SYSDBA
CREATE OR REPLACE DIRECTORY temp_dir AS '/tmp/';
GRANT READ, WRITE ON DIRECTORY temp_dir TO system;
We can now import the tablespace metadata.

$ impdp userid=system/password directory=temp_dir dumpfile=test_data.dmp logfile=test_data_imp.log transport_datafiles='/u01/app/oracle/oradata/DB11GB/test_data01.dbf'
If you are using a version prior to 10g, you do not need the directory object and your command would look something like this.

$ imp userid='system/password as sysdba' transport_tablespace=y datafiles='/u01/app/oracle/oradata/DB11GB/test_data01.dbf' tablespaces=test_data file=test_data.dmp log=test_data_imp.log
Switch the new tablespace into read write mode.

SQL> ALTER TABLESPACE test_data READ WRITE;

Tablespace altered.

SQL>
The tablespace is now available in the destination database.

SELECT tablespace_name, plugged_in, status
FROM dba_tablespaces
WHERE tablespace_name = 'TEST_DATA';

TABLESPACE_NAME PLU STATUS
------------------------------ --- ---------
TEST_DATA YES ONLINE

1 row selected.

SQL>
Cross-Platform Tablespace Conversions

If you are transporting tablespaces between platforms you need to perform Cross-Platform Tablespace Conversions.

For more information see:

Transporting Tablespaces Between Databases
Oracle Data Pump in Oracle Database 10g (expdp and impdp)
Data Pump Enhancements in Oracle Database 11g Release 1
SQL Developer 3.1 Data Pump Wizards (expdp, impdp)
Cross-Platform Tablespace Conversion
Hope this helps. Regards Tim...
















Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

How to see the database is open (mount or unmont ) state in 11g ?

select database_status from v$instance
select * from v$database

_______________________________________________________________________________________________


2. HOW MUCH SPACE IS AVAILABLE IN UNDO N HOW MUCH IS USED


SELECT d.tablespace_name, round(((NVL(f.bytes,0) + (a.maxbytes - a.bytes))/1048576+
u.exp_space),2)
as max_free_mb, round(((a.bytes - (NVL(f.bytes,0)+ (1024*1024*u.exp_space)))*100/a.maxbytes),2)
used_pct FROM sys.dba_tablespaces d, (select tablespace_name, sum(bytes) bytes,
sum(greatest(maxbytes,bytes)) maxbytes from sys.dba_data_files group by tablespace_name) a,
(select tablespace_name, sum(bytes) bytes from sys.dba_free_space group by tablespace_name) f ,
(select tablespace_name , sum(blocks)*8/(1024) exp_space from
dba_undo_extents where status NOT IN ('ACTIVE','UNEXPIRED') group by tablespace_name) u
WHERE d.tablespace_name = a.tablespace_name(+) AND d.tablespace_name = f.tablespace_name(+)
AND d.tablespace_name=u.tablespace_name AND d.contents = 'UNDO' AND u.tablespace_name = (select
UPPER(value)
from v$parameter where name = 'undo_tablespace');

3. How much active,expired and unexpired

=====================================



set linesize 152

col tablespace_name for a20

col status for a10

select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name;
(2:35:42 AM) vipul.pahuja@oracle.com: SQL> select * from t11;

SALARY
----------
12000

SQL> select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name; 2 3 4 5
Enter value for tsname: UNDOTBS1
old 4: group by tablespace_name, status having tablespace_name=upper('&TSNAME')
new 4: group by tablespace_name, status having tablespace_name=upper('UNDOTBS1')

TABLESPACE_NAME STATUS Extent Count Total Blocks SPACEINGB
------------------------------ --------- ------------ ------------ ----------
UNDOTBS1 EXPIRED 33 744 .00567627
UNDOTBS1 UNEXPIRED 16 1208 .009216309

SQL> update t11 set salary=15000 where salary=12000;

1 row updated.

SQL> select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name; 2 3 4 5
Enter value for tsname: UNDOTBS1
old 4: group by tablespace_name, status having tablespace_name=upper('&TSNAME')
new 4: group by tablespace_name, status having tablespace_name=upper('UNDOTBS1')

TABLESPACE_NAME STATUS Extent Count Total Blocks SPACEINGB
------------------------------ --------- ------------ ------------ ----------
UNDOTBS1 ACTIVE 1 128 .000976563
UNDOTBS1 EXPIRED 33 744 .00567627
UNDOTBS1 UNEXPIRED 15 1080 .008239746

SQL> update t11 set salary=20000 where salary=15000;

1 row updated.

SQL> select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name; 2 3 4 5
Enter value for tsname: UNDOTBS1
old 4: group by tablespace_name, status having tablespace_name=upper('&TSNAME')
new 4: group by tablespace_name, status having tablespace_name=upper('UNDOTBS1')

TABLESPACE_NAME STATUS Extent Count Total Blocks SPACEINGB
------------------------------ --------- ------------ ------------ ----------
UNDOTBS1 ACTIVE 1 128 .000976563
UNDOTBS1 EXPIRED 33 744 .00567627
UNDOTBS1 UNEXPIRED 15 1080 .008239746

SQL> update t11 set salary=25000 where salary=20000;

1 row updated.

SQL> select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name; 2 3 4 5
Enter value for tsname: UNDOTBS1
old 4: group by tablespace_name, status having tablespace_name=upper('&TSNAME')
new 4: group by tablespace_name, status having tablespace_name=upper('UNDOTBS1')

TABLESPACE_NAME STATUS Extent Count Total Blocks SPACEINGB
------------------------------ --------- ------------ ------------ ----------
UNDOTBS1 ACTIVE 1 128 .000976563
UNDOTBS1 EXPIRED 33 744 .00567627
UNDOTBS1 UNEXPIRED 15 1080 .008239746

SQL> commit;

Commit complete.

SQL> select tablespace_name,status,count(extent_id) "Extent Count",
sum(blocks) "Total Blocks",sum(bytes)/(1024*1024*1024) spaceInGB
from dba_undo_extents
group by tablespace_name, status having tablespace_name=upper('&TSNAME')
order by tablespace_name; 2 3 4 5
Enter value for tsname: UNDOTBS1
old 4: group by tablespace_name, status having tablespace_name=upper('&TSNAME')
new 4: group by tablespace_name, status having tablespace_name=upper('UNDOTBS1')

TABLESPACE_NAME STATUS Extent Count Total Blocks SPACEINGB
------------------------------ --------- ------------ ------------ ----------
UNDOTBS1 EXPIRED 34 752 .005737305
UNDOTBS1 UNEXPIRED 15 1200 .009155273

SQL>






Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

How to unlock the user in oracle Sql

How to unlock the user in oracle 

check more videos on
http://www.youtube.com/channel

Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav

Oracle Certification Path

 Oracle certification path

For those who are looking for oracle certification ( OCA / OCP) in 10g

Oracle Associate Certification Path ( OCA)

STEP 1  

1Z0-051 Oracle Database 11g: SQL Fundamentals I

STEP 2  

1Z0-042 Oracle Database 10g: Administration I

Than you  are  Oracle Database 10gAdministrator Certified Associate

Now Next step is  Oracle Database 10g Administrator Certified Professional

 

 

Oracle Professional Certification Path (OCP)

STEP 1 - PRIOR CERTIFICATION

Oracle Database 10g Administrator Certified Associate

STEP 2 - COMPLETE TRAINING

Complete one of the approved advanced courses

STEP 3 - PASS THIS EXAM  1Z0-043   Oracle Database 10g: Administration II

STEP 4 - COMPLETE THIS FORM

Complete the Course Submission Form

Oracle Database 10gAdministrator Certified Professional

for more info check Oracle web page .



Looking forward for your suggestions.. please feel free to write to me.. Your help would definitely help to improve our blog. Chetan Yadav