01 2021 档案
摘要:select * from dba_db_links;
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摘要:select sum( case when a is nul then 1 end),sum( case when b is nul then 1 end),sum( case when c is nul then 1 end)from table1 ; select 'a' 字段,sum( cas
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摘要:select * from nls_database_parameters where parameter =’NLS_CHARACTERSET’;
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摘要:select * from dba_role_privs a where a.granted_role='DBA' --查询赋予dba权限的用户 revoke dba from dcm ; --去除dba 的权限 grant dba to dcm ;--为用户赋予dba 的权限 导出dmp 文件 e
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