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摘要： A nonunique index can be used to enforce a primary key or unique constraint.In Oracle8i indexes can be rebuilt without locking the table.The DROP COLUMN option of the ALTER TABLE command is restartabl... 阅读全文

摘要： ksedmp # KSE: dump the process state ksfdmp # Call relevant dump routine kgeasi # Raise an error on an ASSERTION failure (IGNORE) ktcrab KTC: Kernel Tr... 阅读全文

摘要： This practice uses common UNIX and Windows NT utilities to visualize key TCP/IP protocols. You will: See IP information using the IPCONFIG utility. Understand and overcome IP fault situations using t... 阅读全文

摘要： This practice uses common UNIX and Windows NT Oracle utilities to review database user objects’ key roles and permissions. You will:1. See default user objects and their default passwords.2.... 阅读全文

摘要： This practice uses common UNIX and NT Oracle utilities to practice enabling AUDIT on a database. You will: See the procedure to enable and disable Oracle AUDIT on a database. Understand the SQL comma... 阅读全文

摘要： Good network security is accomplished by utilizing port and protocol screening with routers, firewalls,and Intrusion Detection Systems.Port and protocol screening with routers, firewalls,and Intrusion... 阅读全文

摘要： This practice will demonstrate the concept of extent, wrap and shrink in rollback segment utilization. You will: Use the create rollback segment and alter rollback segment syntax. Examine the V$ROLLS... 阅读全文

摘要： Event:10210 See for similar events / parameters~~~~~~~~~~~Version/Use: 7.0 - 8.1.7 Check data block integrity after each modification 9.0+ This event is no longer valid. U... 阅读全文

摘要： Oracle9i provides extended date and time support across different time zones with the help of new datetime data types and functions. To understand the working of these data types and functions, it is ... 阅读全文

摘要： imp数据导入时往往大多数的时间都消耗在了索引建立上，我们可以通过为导入会话设置一系列session级别的参数来加速索引的建立:begin dbms_system.set_int_param_in_session(&sid, &serial, '... 阅读全文