OCM_Session1_1_Database Setup and Undo Management

TIMES: 45 minutes 

1. Database Setup and Undo Management

 1.1 Run the minimum required scripts to complete the basic configuration of the PROD database.

1.2 Set up automatic undo management in the PROD database to support the following requirements:

  1.2.1 Avoid ORA-01555 Snapshot too old errors for queries running up to 90 minues on average.

  1.2.2 The number or concurrent OLTP users will be approximately 120 during normal business hours.

  1.2.3 The number or concurrent batch processes that will run in the evenings and weekends will approximately 12 to 15  

• 7.跑脚本，跑catalog和catporc这两个脚本

• 1.1 Run the minimum required scripts to complete the basic configuration of the PROD database.

SQL> @$ORACLE_HOME/rdbms/admin/catalog.sql

SQL> @$ORACLE_HOME/rdbms/admin/catproc.sql

PL/SQL procedure successfully completed.

SQL> select open_mode from v$database;

OPEN_MODE

----------

READ WRITE

1 row selected.

•   1.2.1 Avoid ORA-01555 Snapshot too old errors for queries running up to 90 minues on average.

SQL> alter system set undo_retention=5400;

System altered.

•  1.2.2 The number or concurrent OLTP users will be approximately 120 during normal business hours.

SQL> alter system set processes=135 scope=spfile;

System altered.

• 1.2.3 The number or concurrent batch processes that will run in the evenings and weekends will approximately 12 to 15  

SQL> alter system set job_queue_processes=15;

System altered.

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup

ORACLE instance started.

Total System Global Area  524288000 bytes

Fixed Size                  1220360 bytes

Variable Size             150995192 bytes

Database Buffers          369098752 bytes

Redo Buffers                2973696 bytes

Database mounted.

Database opened.

SQL>