Oracle 常用命令大匯總

第一章：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;