How to modify the archive log size of an Oracle Database

Oracle archive logs are certainly not unfamiliar to everyone. The following describes how to modify the size of Oracle archive logs, hoping to help you learn about Oracle archive logs.

Method: Add a new large log file and delete the old small log file.

Assume that there are three log groups, each of which has one member. The size of each member is 1 MB. Now we want to change the size of all three log groups to 10 MB.

1. create two new log groups

The following is a code snippet: Alter database add logfile group 4 ('d: \ ORACLE \ ORADATA \ ORADB \ REDO04_1.LOG ') size 1024 k; Alter database add logfile group 5 ('d: \ ORACLE \ ORADATA \ ORADB \ REDO05_1.LOG ') size 1024 k;

2. Switch the current log to a new log group.

The following is a code snippet: Alter system switch logfile;

3. Delete the old log Group

The following is a code snippet: Alter database drop logfile group 1; alter database drop logfile group 2; alter database drop logfile group 3;

4. delete files in the original log group 1, 2, and 3 in the operating system

5. Rebuild log groups 1, 2, and 3

The following is a code snippet: Alter database add logfile group 1 ('d: \ ORACLE \ ORADATA \ ORADB \ REDO01_1.LOG ') size 10 M; Alter database add logfile group 2 ('d: \ ORACLE \ ORADATA \ ORADB \ REDO02_1.LOG ') size 10 M; Alter database add logfile group 3 ('d: \ ORACLE \ ORADATA \ ORADB \ REDO03_1.LOG ') size 10 M;

6. Switch the log Group

The following is a code snippet: Alter system switch logfile;

7. Delete the log groups for intermediate transition. 4 and 5

The following is a code snippet: Alter database drop logfile group 4; alter database drop logfile group 5;

8. delete files in log group 4 and 5 under the Operating System

9. Back up the latest Control File

The following is a code snippet: SQL> connect internal SQL> alter database backup controlfile to trace resetlogs