Oracle常用命令大盘点

正在看的ORACLE教程是:Oracle常用命令大全集。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;
 
    第二章：表空间管理
 
    1.create tablespaces
 
    sql> create tablespace tablespace_name datafile 'c:\oracle\oradata\file1.dbf' size 100m,
 
    sql> 'c:\oracle\oradata\file2.dbf' size 100m minimum extent 550k [logging/nologging]
 
    sql> default storage (initial 500k next 500k maxextents 500 pctinccease 0)
 
    sql> [online/offline] [permanent/temporary] [extent_management_clause]
 
    2.locally managed tablespace
 
    sql> create tablespace user_data datafile 'c:\oracle\oradata\user_data01.dbf'
 
    sql> size 500m extent management local uniform size 10m;
 
    3.temporary tablespace
 
    sql> create temporary tablespace temp tempfile 'c:\oracle\oradata\temp01.dbf'
 
    sql> size 500m extent management local uniform size 10m;
 
    4.change the storage setting
 
    sql> alter tablespace app_data minimum extent 2m;
 
    sql> alter tablespace app_data default storage(initial 2m next 2m maxextents 999);
 
    5.taking tablespace offline or online
 
    sql> alter tablespace app_data offline;
 
    sql> alter tablespace app_data online;
 
 &nbs
 
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正在看的ORACLE教程是:Oracle常用命令大全集。p;  6.read_only tablespace
    sql> alter tablespace app_data read only|write;
 
    7.droping tablespace
 
    sql> drop tablespace app_data including contents;
 
    8.enableing automatic extension of data files
 
    sql> alter tablespace app_data add datafile 'c:\oracle\oradata\app_data01.dbf'size 200m
 
    sql> autoextend on next 10m maxsize 500m;
 
    9.change the size fo data files manually
 
    sql> alter database datafile 'c:\oracle\oradata\app_data.dbf'resize 200m;
 
    10.Moving data files: alter tablespace
 
    sql> alter tablespace app_data rename datafile 'c:\oracle\oradata\app_data.dbf'
 
    sql> to 'c:\oracle\app_data.dbf';
 
    11.moving data files:alter database
 
    sql> alter database rename file 'c:\oracle\oradata\app_data.dbf'
 
    sql> to 'c:\oracle\app_data.dbf';  [NextPage]
 
第三章：表
 
    1.create a table
 
    sql> create table table_name (column datatype,column datatype]….)
 
    sql> tablespace tablespace_name [pctfree integer] [pctused integer]
 
    sql> [initrans integer] [maxtrans integer]
 
    sql> storage(initial 200k next 200k pctincrease 0 maxextents 50)
 
    sql> [logging|nologging] [cache|nocache]
 
    2.copy an existing table
 
    sql> create table table_name [logging|nologging] as subquery
 
    3.create temporary table
 
    sql> create global temporary table xay_temp as select * from xay;
 
    on commit preserve rows/on commit delete rows
 
    4.pctfree = (average row size – initial row size) *100 /average row size
 
    pctused = 100-pctfree- (average row size*100/available data space)
 
    5.change storage and block utilization parameter
 
    sql> alter table table_name pctfree=30 pctused=50 storage(next 500k
 
    sql> minextents 2 maxextents 100);
 
    6.manually allocating extents
 
    sql> alter table table_name allocate extent(size 500k datafile 'c:/oracle/data.dbf');
 
    7.move tablespace
 
    sql> alter table employee move tablespace users;
 
    8.deallocate of unused space
 
    sql> alter table table_name deallocate unused [keep integer]
 
    9.truncate a table
 
    sql> truncate table table_name;
 
    10.drop a table
 
    sql> drop table table_name [cascade constraints];
 
    11.drop a column
 
    sql> alter table table_name drop column comments cascade constraints checkpoint 1000;
 
    alter table table_name drop columns continue;
 
    12.mark a column as unused
 
    sql> alter table table_name set unused column comments cascade constraints;
 
    alter table table_name drop unused columns checkpoint 1000;
 
    alter table orders drop columns continue checkpoint 1000
 
    data_dictionary : dba_unused_col_tabs