// List1.cpp : Defines the entry point for the console application.///* C語言下的升序鏈表的基本操作 List1.cpp ------------------------------------- 作者: Software Engineering @ HIT 1093710210 Alex 時間: 2010.9.10 ---------------------
consistent=yobject_consistent=y||||||||||||||||||||||||||CONSISTENTDefault: nSpecifies whether or not Export uses the SET TRANSACTION READ ONLY statement to ensure that the data seen by Export is consistent to a single point in time and does not
COMMITDefault: nSpecifies whether Import should commit after each array insert. By default, Import commits only after loading each table, and Import performs a rollback when an error occurs, before continuing with the next object.If a table has
Tuning an Application / Reducing LoadIf your whole application is performing suboptimally, or if you are attempting toreduce the overall CPU or I/O load on the database server, then identifyingresource-intensive SQL involves the following steps:1.
如何手工殺掉一個oracle會話Sometimes it may necessary for the DBA to terminate certain user sessions.A user session can be terminated by using the alter system command .The SID and SERIAL# from the v$session view are required to kill the session.when you kill
使用者級流互置配置過程:1、設定資料庫環境alter system set global_names=true scope = both;要求global_names為true,即建立的資料庫連結名要與目標資料庫服務名一致,流互置環境用資料庫鏈路來識別遠程庫和遠程庫上的隊列等。另外規則集中包含發生改變的資料庫名,這些資料庫名都用資料庫連結名來標識。alter system set compatible='10.2.0.3'
|||||||||||||||||||||||||||||||||||||||||||||||||IGNOREDefault: nSpecifies how object creation errors should be handled. If you accept the default, IGNORE=n, Import logs or displays object creation errors before continuing.If you specify IGNORE=y,
whole database=full database+控制檔案+歸檔記錄檔instance recovery (系統掉電)media recovery (檔案刪除,介質損壞,需要dba幹預)資料庫crash的情況:redo 組中所有成員損壞,當進程訪問的時候才會crash.控制檔案丟失,資料檔案也會丟失undo,或者系統資料表空間丟失Keeping a Database OpenAfter the instance is open, it fails in the case of