Oracle

In some cases, because it is the C/s architecture, from the previous stand-alone system to the current 11.2 of the RAC, if the client IP address to modify the workload is too large, but also unrealistic, generally recommended directly modify the

I used to have an idea that I just wanted to create an index on one or a few of these partitions, and that the other partitions didn't want to be created, and neither the local nor global index was able to achieve that requirement, but the partial

System environment: 1, operating system: Windows 2000 2. Database: Oracle 8i R2 (8.1.6) for NT Enterprise Edition 3, Installation path: c:oracle Access method: 1, connect into the Sql*plus Log in as a System/manager user, Sql> Conn

Temporary tablesIn Oracle, a temporary table is "static," which, like a regular datasheet, needs to be created only once, and its structure is valid for the entire period from creation to deletion. In contrast to other types of tables, a temporary

* * Start * *1, start the database instance, is divided into two steps: The first step, starts listens; the second step is to start the database instance. 1.1 Go to Sqlplus startup instance{{{[Oracle@redhat ~]$ su-oracle--"Switch to Oracle

Prior to using EXP, IMP Lead Library command successfully implemented the Oracle database export, import, on this, yesterday again to the server's newly installed Oracle database with EXP, IMP Guide library, has been reported as "EXP-0006: Internal

NVL (name,0) empty then take 0. SUSTRB (manth,1,4) first started to take 4 digits. Decode (je,1,1,2), je 1, displays 1, or 2. Select Classno, AVG (score) from student group by Classno has avg (score) = (select Max (avg (score)) from student GROUP

The customer's database has tools to log in to an Oracle database during transfers occasionally ORA-04031, after analysis because the tool needs to query v$session, which is identified as a bug 12808696–shared pool memory leak of " Hng:all Sessi

SQL IsNull (oracle,mysql tutorial, MSSQL) IsNullReplaces null with the specified replacement value. GrammarIsNull (Check_expression, Replacement_value) ParametersCheck_expression An expression that will be checked for null. Check_expression can

Problem Description: Deletes a data based on the table primary key ID, which executes more than 5 seconds after a commit has been performed on the PL/SQL.!!! Problem Analysis: The requirement is to delete a primary table A, and another two tables

Copy code code as follows: CREATE TABLE T_news ( ID number, N_type VARCHAR2 (20), N_title VARCHAR2 (30), N_count number ) Prompt disabling triggers for t_news ... ALTER TABLE t_news disable all triggers; Prompt

The Oracle tutorial being looked at is: analysis and resolution of Oracle Common Error codes (II.). Ora-01578:oracle data Block corrupted (file # num,block # num) Reason: When Oracle accesses a block of data, due to 1, hardware I/O error, 2, os I/O

The considerations for migrating data from MySQL to Oracle are as follows 1. Automatic growth of data type processing MySQL has an automatically growing data type, and the data value is automatically obtained when you insert a record without

Returning itself is often used in conjunction with DML statements. (INSERT UPDATE DELETE) How to use: UPDATE table_name SET EXPR1 returning column_name into xxx INSERT: Returns the value that is addedUpdate: The updated value when

Oracle DG three mode switching =================================== 1 Maximum performance mode maximum performance------default mode=================================== One of the largest performance mode features 192.168.1.181 sql> Select

Select T.username,count (*) from v$session T GROUP by T.username //Find the sql_id value that a user is executing based on the user group session Select * From V$session t where T.username = ' BUDGET ' and t.sql_id are NOT NULL //lookup

Today encountered a problem, there is a table can not operate, it is likely to be locked, the first thought is kill session, so executed the following script to find out which session has a problem: To see if a table is locked SELECT/*+

ORACLE ORA-00600 errors are not your program errors. ORACLE internal errors, in general, most ORA-00600 errors are caused by ORACLESoftware bug caused, so for such errors need to contact ORACLE technical support engineers in a timely manner. For

The Oracle 11g user name and password have expired. The solution is as follows:1: log on to the console for verification. The JDBC test provided by weblogic can verify the database connectivity. At the same time, the application log should be

A customer's 11203 rac (asm) power loss the day before yesterday caused the database to fail to start. Note that the database is in archive mode. We can see how unlucky it is.According to colleagues, the startup failed due to damage to the redo and