Assume that there are three log groups, each of which has one member and 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 days
Assume that there are three log groups, each of which has one member and 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 days
Assume that there are three log groups, each of which has one member and 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
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.
Alter system switch logfile;
Alter system switch logfile;
3. Delete the old log Group
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
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
Alter system switch logfile;
Alter system switch logfile;
Alter system switch logfile;
7. Delete the log groups for intermediate transition. 4 and 5
Alter database drop logfile group 4;
Alter database drop logfile group 5;
SQL> select * from v $ log;
SQL> alter system switch logfile;
8. delete files in log group 4 and 5 under the Operating System
9. Back up the latest Control File
SQL>; alter database backup controlfile to trace resetlogs
Note: For security consideration, you can add several more files to each group.
10. Add redo logs to an existing group
SQL> alter database add logfile member 'e: \ oracle \ product \ 10.2.0 \ redo03c. log' to group 3;
11. Delete redo logs of existing groups
SQL> alter database drop logfile member 'e: \ oracle \ product \ 10.2.0 \ redo03c. log ';
Note: This article describes how to rectify data on multiple webpages and perform operations in the production environment.