oracle常用命令(约束、LOAD数据、重组织数据)

第五章：约束

1.define constraints as immediate or deferred
sql> alter session set constraint[s] = immediate/deferred/default;
set constraint[s] constraint_name/all immediate/deferred;
2. sql> drop table table_name cascade constraints
sql> drop tablespace tablespace_name including contents cascade constraints
3. define constraints while create a table
sql> create table xay(id number(7) constraint xay_id primary key deferrable
sql> using index storage(initial 100k next 100k) tablespace indx);
primary key/unique/references table(column)/check
4.enable constraints
sql> alter table xay enable novalidate constraint xay_id;
5.enable constraints
sql> alter table xay enable validate constraint xay_id;

 

第六章：LOAD数据

1.loading data using direct_load insert
sql> insert /*+append */ into emp nologging
sql> select * from emp_old;
2.parallel direct-load insert
sql> alter session enable parallel dml;
sql> insert /*+parallel(emp,2) */ into emp nologging
sql> select * from emp_old;
3.using sql*loader
sql> sqlldr scott/tiger \
sql> control = ulcase6.ctl \
sql> log = ulcase6.log direct=true

第七章：reorganizing data

1.using expoty
$exp scott/tiger tables(dept,emp) file=c:\emp.dmp log=exp.log compress=n direct=y
2.using import
$imp scott/tiger tables(dept,emp) file=emp.dmp log=imp.log ignore=y
3.transporting a tablespace
sql>alter tablespace sales_ts read only;
$exp sys/.. file=xay.dmp transport_tablespace=y tablespace=sales_ts
triggers=n constraints=n
$copy datafile
$imp sys/.. file=xay.dmp transport_tablespace=y datafiles=(/disk1/sles01.dbf,/disk2
/sles02.dbf)
sql> alter tablespace sales_ts read write;
4.checking transport set
sql> DBMS_tts.transport_set_check(ts_list =>'sales_ts' ..,incl_constraints=>true);
在表transport_set_violations 中查看
sql> dbms_tts.isselfcontained 为true 是， 表示自包含