How to create recovery catalog and use it

Recovery Catalog Concepts:
----------------------------------

Recovery catalog holds the RMAN repository information(i.e backup information) in a separate database schema in addition to control files. Though you can use target database as a recovery catalog database(The database where recovery catalog resides) but you will not do that because recovery catalog must be protected in the event of the loss of target database.

Before proceed it is good to understand about recovery catalog that recovery catalog is nothing but a schema that owns a list of tables. SYS user can't be owner of recovery catalog.

How to Create Recovery Catalog:
--------------------------------------------
Creating a recovery catalog is a three steps process.They are,

A)Configure Recovery Catalog Database.
B)Create the Recovery Catalog owner.
C)Create Recovery Catalog itself.

A)Configure Recovery Catalog Database:
-------------------------------------------
1)Choose any database to select as recovery catalog database rather than target database(where you will perform backup).

2)Create a tablespace where recovery catalog information will be populated.

SQL> SELECT NAME,DBID FROM V$DATABASE;
NAME            DBID
--------- ----------
ARJU    2869417476

SQL> CREATE TABLESPACE catalog_tbs DATAFILE '/oradata2/catalog01.dbf' SIZE 100M;
Tablespace created.

B)Create the Recovery Catalog owner.
---------------------------------------------------------
1)Create a user in the recovery catalog database who actually owns the recovery catalog schema. Also assign default tablespace catalog_tbs to this user.


SQL> SELECT NAME,DBID FROM V$DATABASE;
NAME            DBID
--------- ----------
ARJU    2869417476

SQL> CREATE USER catalog_user IDENTIFIED BY catalog_pwd TEMPORARY TABLESPACE TEMP DEFAULT TABLESPACE catalog_tbs QUOTA UNLIMITED ON catalog_tbs;

User created.

2)Grant the RECOVERY_CATALOG_OWNER role to the schema owner. This role provides the user with all privileges required to maintain and query the recovery catalog.

SQL> GRANT RECOVERY_CATALOG_OWNER TO catalog_user;
Grant succeeded.

C)Create Recovery Catalog itself:
-----------------------------------------
At this stage you have only a tablespace and a user in recovery catalog database. There is no objects in the recovery catalog schema.

SQL> SELECT NAME,DBID FROM V$DATABASE;
NAME            DBID
--------- ----------
ARJU    2869417476

SQL> conn catalog_user/catalog_pwd
Connected.

SQL> select * from user_tables;
no rows selected

Now you have to populate tables in the schema. To do this,

1)Through RMAN connect to the database that will contain the catalog as the catalog owner.

SQL> !rman CATALOG catalog_user/catalog_pwd

Recovery Manager: Release 10.2.0.1.0 - Production on Wed May 7 05:51:44 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to recovery catalog database


2)Run the CREATE CATALOG command to create the catalog.

RMAN>CREATE CATALOG;
recovery catalog created

You can also create catalog in other tablespace if you specify that,

RMAN>CREATE CATALOG TABLESPACE USERS;

3)Check the recovery catalog tables, objects, view, package etc.

SQL> SELECT COUNT(*) FROM USER_OBJECTS;
COUNT(*)
----------
195

Comments

Post a Comment

Popular posts from this blog

How to make partitioning in Oracle more Quickly

As the table size grows and full table scans happens more frequently then there is no alternative than partitioning in oracle. Partition greatly enhance performance of a query. I will start my partitioning system simply with an example. In my database the following query took 30~35 seconds to complete. After partitioning the performance increased amazingly and it then took only 1 second. My query was, SELECT DISTINCT fs.type, fs.id , fs.pid, fs.cid , fs.cr_id, fs.created_date FROM summary fs where fs.id in (select fa.id from forms fa where fa.sar in (select la.sar from login la where la.login_id=1 and fa.created_date BETWEEN to_date('1-MAY-2008') AND to_date('21-SEP-2008') and fs.created_date BETWEEN to_date('1-MAY-2008') AND to_date('21-SEP-2008') ) )and mode=0; After seeing above query I decide to make range partition on column created_date both in summary table and forms table. Below is the list of procedur
Read more

Copy files between Unix and Windows with rcp

There are many third party tools by which you can copy files between windows and unix machine. Some common tools are winscp, SSHSecureShellClient etc. Instead of using any third party tool, you can use original unix and windows built-in tool to do the task. The RCP (Remote CoPy) is a standard UNIX tool and a Microsoft Windows 2000 tool that copies files/folder to and from computer running the RCP service. Before you can use the RCP tool from a Windows-based computer you must do something in your UNIX computer. you must turn on the RCP service and update the security files to allow the Windows-based computer to connect to your unix machine over this service. The following steps will help you. Step 01: Turn on RCP service on UNIX Host Turn on the RCP service on unix machine by using inetd: 1. Log on as root. 2. Edit the file /etc/Inetd.conf. 3. Uncomment the lines that start with shell and that start with exec. 4. Save the file. 5. Use ps -ef |grep inetd and determine inetd service p
Read more

ORA-04062: timestamp of procedure has been changed

Problem Description In the database I have created one procedure named a as below. create or replace procedure a(a number) as begin insert into t1 values(1); commit; end; / Now after creating database link using remote database machine whenever I access this procedure "A" it executes successfully and I get value "1" in table t1. Like below in example where orastdby_m is the database link, shaik is the schema name and value 1 is the argument value though argument value is not used in the procedure. SQL> exec shaik.a@orastdby_m(1); PL/SQL procedure successfully completed. Now in the source database machine I changed the procedure as below. Though you can change anything like any literal; adding space or remove space. I changed value to be inserted from 1 to 2. create or replace procedure a(a number) as begin insert into t1 values(2); commit; end; / Now in the other database whenever I execute the procedure using database link it throws error ORA-04062. But subseq
Read more