ERROR: SGA memory leak detected 288SGA Memory Leak Detected in trace file Hello, I have discovered a trace file (see below) alerting me to an SGA Memory Leak - no Oracle error code was listed in the message. I need some advice as to how serious this
1.alert system set job_queue_processes = 10;alert system set job_queue_processes = 10 scope=both;alter system set Timed_statistics=true;2.connect perfstat/perfstatSQL>@statsauto --使用預設設定為每小時執行一次快照3.或使用手工建立(靈活設定執行快照所間隔的時間)
--觸發器CREATE OR REPLACE TRIGGER GBJ.B_INSERT_TESTBEFORE INSERT OR UPDATEOF NCOLUMNON GBJ.TEST_TABLE REFERENCING NEW AS NEW OLD AS OLDFOR EACH ROWBEGINif :new.ncolumn=0 then raise_application_error(-20180,'只能插入正數!');end if; END
ALTER INDEX emp_name REBUILD ONLINE;--維護索引是需要知道的:Monitoring Space Use of IndexesIf key values in an index are inserted, updated, and deleted frequently, the index can lose its acquired space efficiently over time. Monitor index efficiency of space
iSQL *Plus PageiSQL*Plus is a product independent of Enterprise Manager. The iSQL*Plus user interface runs in a web browser connected to the Internet or your intranet. iSQL*Plus enables you to use a web browser to connect to an Oracle database and
最簡單的例子 —— Hello World!幾乎所有的講解編程的書給讀者的第一個例子都是 Hello World 程式,那麼我們今天也就從這個例子出發,來逐步瞭解 BASH。用 vi 編輯器編輯一個 hello 檔案如下: #!/bin/bash# This is a very simple exampleecho Hello World 這樣最簡單的一個 BASH 程式就編寫完了。這裡有幾個問題需要說明一下: 一,第一行的 #! 是什麼意思二,第一行的 /bin/bash
CREATE CONTROLFILE can Corrupt Datafile Headers This alert described the issue reported in bug 3514615 .Versions Affected This affects Oracle Server version 10.1.0.2 only .Platforms Affected GENERIC , all platforms are affected .Description
Q1. How to configure "listener.ora" and "tnsnames.ora"A1. Usually, NETCA will launch automatically during the DBCA. IF you have encountered some errors or want to reconfig them later, please do the following things:(1) Launch NETCA ;(2) Choose the
700: Session inactivity timeout (work rolled back) Explanation:Your transaction was implicitly canceled and rolled back by an implicit ROLLBACK statement. The database session was implicitly terminated because the user failed to carry out any
--最主要的等待視圖select * from v$session_wait;select * from v$session_event;select * from v$system_event;select * from v$waitstat where count>0;--相關視圖select * from v$session_wait select * from v$filestatselect * from dba_data_filesselect * from
替換某個欄位中某一個字有這樣一個需求,替換memo欄位中的一個字,例如,將“XXX應付”都替換成“XXX實付”,其他字不變。傳統的UPDATE語句做這種更新是非常麻煩的,從10g開始,我們可以使用Regex來實現。select regexp_replace(memo,'應','實') from table_a where code = '102';update table_a a set memo = regexp_replace(memo,'應','實') where a.code = '1
眾所周知,在Oracle9i中對初始化參數的管理引入了一個新的檔案:Spfile.這個參數是個二進位檔案,手工對其進行編輯會出錯.可以採用alter system set ......的命令方式來對其進行修改.不妙的是,有的時候,錯誤的修改了參數之後發現系統不能啟動,而粗心的使用者或者初級DBA可能還沒有對該檔案(或者參數檔案的內容)進行備份.這個時候如何解決呢?下面是類比出錯的情境:SQL> connect / as sysdba已串連。SQL> show parameter