由于應用需要，aa能訪問bb的所有表。

SQL> create user aa identified by oracle;

User created.

SQL> grant connect,resource to aa;

Grant succeeded.

SQL> create user bb identified by oracle;

User created.

SQL> grant connect,resource to bb;

Grant succeeded.

SQL> grant create synonym to bb;

Grant succeeded.

SQL> conn aa/oracle

Connected.

SQL> create table t1(id number);

Table created.

SQL> insert into t1 values(1);

1 row created.

SQL> insert into t1 values(2);

1 row created.

SQL> commit;

Commit complete.

SQL> show user;

USER is "AA"

通過下面語句可以產生出授權的批量語句：

SQL> select 'grant select on '||object_name||' to bb;' from user_objects;

'GRANTSELECTON'||OBJECT_NAME||'TOBB;'

------------------------------------------------------------------------------------------------------------------------

grant select on T1 to bb;

SQL> grant select on T1 to bb;

Grant succeeded.

通過下面語句可以批量產生出創建同義詞的語句：

SQL> select 'create or replace synonym '||object_name||' for aa.'||object_name||';' from user_objects;

'CREATEORREPLACESYNONYM'||OBJECT_NAME||'FORAA.'||OBJECT_NAME||';'

------------------------------------------------------------------------------------------------------------------------

create or replace synonym T1 for aa.T1;

將上面產生的語句用bb用戶執行：

SQL> conn bb/oracle

Connected.

SQL> create or replace synonym T1 for aa.T1;

Synonym created.

SQL> select object_name,object_type from user_objects;

OBJECT_NAME??????????????????? OBJECT_TYPE

------------------------------ -------------------

T1???????????????????????????? SYNONYM

SQL> select * from t1;

ID

----------

1

2

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總結

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