Tài liệu SYSTEM ROLE IN ORACLE DEMO pdf

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SYSTEM ROLE IN ORACLE
DEMO
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Nội dung demo
EXECUTE_CATALOG_ROLE
1
EXP_FULL_DATABASE
2
IMP_FULL_DATABSE
3
GATHER_SYSTEM_STATISTICS
4
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Chuẩn bị

create user test0 identified by p123;

create user test1 identified by p123;

create user test2 identified by p123;

create user test3 identified by p123;

create user test4 identified by p123;
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Chuẩn bị


grant connect, resource to test0;

grant connect, resource, execute_catalog_role
to test1;

grant connect, resource, exp_full_database to
test2;

grant connect, resource, imp_full_database to
test3;

grant connect, resource,
gather_system_statistics to test4;
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EXECUTE_CATALOG_ROLE

Package: DBMS_LOCK

Produres and functions:

procedure allocate_unique(…);

function request(…);

function convert(…);

function release(…);

procedure sleep( seconds in number);

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EXECUTE_CATALOG_ROLE
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connect test0/p123;
exec DBMS_LOCK.sleep(50);
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EXECUTE_CATALOG_ROLE
connect test1/p123;
exec DBMS_LOCK.sleep(50);
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EXP_FULL_DATABASE
connect test0/p123;
create table A(
id varchar2(10)
);
insert into A values ('abc');
connect test2/p123;
create table B(
id varchar2(10)
);
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EXP_FULL_DATABASE
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EXP_FULL_DATABASE
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EXP_FULL_DATABASE
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EXP_FULL_DATABASE
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EXP_FULL_DATABASE
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IMP_FULLDATA_BASE

Cũng như export thì mọi user có role connect và
resource đều có quyền import dữ liệu vào
CSDL, cụ thể là schema của mình.

Nếu một file export đc tạo bởi 1 user normal thì
mọi user khác đều có thể import dữ liệu vào
schema của mình nếu có file đó trong tay.

Tuy nhiên nếu một file export bởi một dba thì chỉ
có một dba khác mới có quyền import vào
CSDL, hay nói các khác thì phải có quyền
IMP_FULL_DATABASE để import từ file tạo bởi
1 dba.
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IMP_FULL_DATABASE
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IMP_FULL_DATABASE

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IMP_FULL_DATABASE
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IMP_FULL_DATABASE
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GATHER_SYSTEM_STATISTICS
Connect test0/p123;
Select * from SYS.AUX_STATS$;
Delete from SYS.AUX_STATS$ where PVAL2 =
'COMPLETED‘;
Update SYS.AUX_STATS$ set PVAL2= '‘ where
PVAL2 = 'COMPLETED‘;
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GATHER_SYSTEM_STATISTICS
Connect test4/p123;
Select * from SYS.AUX_STATS$;
Update SYS.AUX_STATS$ set PVAL2= ‘’ where
PVAL2 = 'COMPLETED‘;
Select * from SYS.AUX_STATS$;
Update SYS.AUX_STATS$ set PVAL2=
‘COMPLETED’ where PNAME = ‘STATUS‘;
Select * from SYS.AUX_STATS$;
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