4.adding online redo log members

sql> alter tablespace app_data offline;

b. sql> execute dbms_logmnr_d.build('oradb.ora','c:\oracle\oradb\log');

sql> to 'c:/oracle/oradata/redo01.log';

sql> 'c:\oracle\oradata\file2.dbf' size 100m minimum extent 550k [logging/nologging]

sql> v$logmnr_logs);

1.create a table

sql> alter database add logfile member

7.drop online redo log members

8.clearing online redo log files

4.change the storage setting

sql> create table table_name (column datatype,column datatype]....)

6.drop online redo log groups

sql> minextents 2 maxextents 100);

sql> drop table table_name [cascade constraints];

sql> alter table table_name drop column comments cascade constraints checkpoint 1000;

5.change storage and block utilization parameter

sql> ('/disk3/log4a.rdo','/disk4/log4b.rdo') size 1m;

sql> alter tablespace app_data minimum extent 2m;

sql> alter tablespace app_data online;

&nbs

sql> truncate table table_name;

5.changes the name of the online redo logfile

sql> '/disk3/log1b.rdo' to group 1,

sql> alter database rename file 'c:/oracle/oradata/oradb/redo01.log'

c. sql> execute dbms_logmnr_add_logfile('c:\oracle\oradata\oradb\redo01.log',

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f. sql> select * from v$logmnr_contents(v$logmnr_dictionary,v$logmnr_parameters

9.truncate a table

1.forcing log switches

sql> alter system switch logfile;

2.forcing checkpoints

on commit preserve rows/on commit delete rows

sql> create temporary tablespace temp tempfile 'c:\oracle\oradata\temp01.dbf'

第二章：表空间管理

a. in the init.ora specify utl_file_dir = ' '

sql> to 'c:\oracle\app_data.dbf';

sql> alter database drop logfile group 3;

10.Moving data files: alter tablespace

11.drop a column

sql> create global temporary table xay_temp as select * from xay;

sql> alter tablespace app_data rename datafile 'c:\oracle\oradata\app_data.dbf'

sql> alter tablespace app_data default storage(initial 2m next 2m maxextents 999);

sql> alter database rename file 'c:\oracle\oradata\app_data.dbf'

alter table table_name drop columns continue;

sql> create tablespace tablespace_name datafile 'c:\oracle\oradata\file1.dbf' size 100m,

e. sql> execute dbms_logmnr.start_logmnr(dictfilename=>'c:\oracle\oradb\log\oradb.ora');

sql> alter table table_name deallocate unused [keep integer]

sql> alter table table_name pctfree=30 pctused=50 storage(next 500k

alter table table_name drop unused columns checkpoint 1000;

sql> alter database datafile 'c:\oracle\oradata\app_data.dbf'resize 200m;

3.temporary tablespace

12.mark a column as unused

d. sql> execute dbms_logmnr.add_logfile('c:\oracle\oradata\oradb\redo02.log',

sql> alter tablespace app_data read only|write;

sql> alter table table_name allocate extent(size 500k datafile 'c:/oracle/data.dbf');

7.droping tablespace

6.manually allocating extents

sql> dbms_logmnr.addfile);

8.deallocate of unused space

2.copy an existing table

sql> [online/offline] [permanent/temporary] [extent_management_clause]

8.enableing automatic extension of data files

sql> autoextend on next 10m maxsize 500m;

sql> alter table employee move tablespace users;

1.create tablespaces

sql> storage(initial 200k next 200k pctincrease 0 maxextents 50)

9.change the size fo data files manually

g. sql> execute dbms_logmnr.end_logmnr; 

sql> size 500m extent management local uniform size 10m;

3.create temporary table

sql> alter database drop logfile member 'c:/oracle/oradata/redo01.log';

sql> to 'c:\oracle\app_data.dbf';  [NextPage]

sql> alter database clear [unarchived] logfile 'c:/oracle/log2a.rdo';

sql> '/disk4/log2b.rdo' to group 2;

sql> size 500m extent management local uniform size 10m;

sql> dbms_logmnr.new);

sql> alter database add logfile [group 4]

第四章：索引

sql> create table table_name [logging|nologging] as subquery

sql> alter system checkpoint;

sql> tablespace tablespace_name [pctfree integer] [pctused integer]

data_dictionary : dba_unused_col_tabs

5.taking tablespace offline or online

sql> default storage (initial 500k next 500k maxextents 500 pctinccease 0)

pctused = 100-pctfree- (average row size*100/available data space)

sql> alter tablespace app_data add datafile 'c:\oracle\oradata\app_data01.dbf'size 200m

7.move tablespace

4.pctfree = (average row size - initial row size) *100 /average row size

sql> create tablespace user_data datafile 'c:\oracle\oradata\user_data01.dbf'

11.moving data files:alter database

sql> alter table table_name set unused column comments cascade constraints;

2.locally managed tablespace

alter table orders drop columns continue checkpoint 1000

第三章：表

3.adding online redo log groups

sql> drop tablespace app_data including contents;

sql> [initrans integer] [maxtrans integer]

9.using logminer analyzing redo logfiles

sql> [logging|nologging] [cache|nocache]

10.drop a table