Oracle数据库命令速查手册-日志管理

1.forcing log switches 
sql> alter system switch logfile; 
2.forcing checkpoints 
sql> alter system checkpoint; 
3.adding online redo log groups 
sql> alter database add logfile [group 4]sql> ('/disk3/log4a.rdo','/disk4/log4b.rdo') size 1m; 
4.adding online redo log members 
sql> alter database add logfile member 
sql> '/disk3/log1b.rdo' to group 1, 
sql> '/disk4/log2b.rdo' to group 2; 
5.changes the name of the online redo logfile 
sql> alter database rename file 'c:/oracle/oradata/oradb/redo01.log' 
sql> to 'c:/oracle/oradata/redo01.log'; 
6.drop online redo log groups 
sql> alter database drop logfile group 3;
7.drop online redo log members 
sql> alter database drop logfile member 'c:/oracle/oradata/redo01.log'; 
8.clearing online redo log files 
sql> alter database clear [unarchived] logfile 'c:/oracle/log2a.rdo'; 
9.using logminer analyzing redo logfiles 
a. in the init.ora specify utl_file_dir = ' '
b. sql> execute dbms_logmnr_d.build('oradb.ora','c:\oracle\oradb\log'); 
c. sql> execute dbms_logmnr_add_logfile('c:\oracle\oradata\oradb\redo01.log',
sql> dbms_logmnr.new); 
d. sql> execute dbms_logmnr.add_logfile('c:\oracle\oradata\oradb\redo02.log',
sql> dbms_logmnr.addfile); 
e. sql> execute dbms_logmnr.start_logmnr(dictfilename=>'c:\oracle\oradb\log\oradb.ora'); 
f. sql> select * from v$logmnr_contents(v$logmnr_dictionary,v$logmnr_parameters 
sql> v$logmnr_logs); 
g. sql> execute dbms_logmnr.end_logmnr;