Oracle

Usage of instr in Oracle:The format of the InStr method isINSTR (The source string, the string to find, starting with the first few characters, to find the ordinal number of matches)Returns the location found, or 0 if it is not found.For example:

Oracle creates table spaces, creates users, and grants, views permissions Create a temporary table spaceCREATE Temporary tablespace test_tempTempfile ' C:\oracle\product\10.1.0\oradata\orcl\test_temp01.dbf 'SIZE 32MAutoextend onNEXT 32M MAXSIZE 2048

Oracle Dataguard normal switching and emergency switching Oracle Dataguard provides disaster-tolerant solutions that can effectively prevent single points of failure and provide highly available technology, here is a description of the Dataguard

This article is about Oracle execution dbtest or Dbshut error: Oracle_home_listner is isn't SET, unable to auto-start ORACLE Net listener Reason and resolution, Interested students under the reference. This article explains the ORACLE

The following error occurred while entering exp in the DOS environment.. Exporting Pre-schema process objects and actions. Exporting external function library names for user Fjzyinfo. Export public type synonyms. Exporting private type synonyms.

--oracle Jobs Batch Command Reference Qlplus/nolog connect Sys/lee as SYSDBA--The following sentences are executed under the SYS (that is, a user with DBA authority) to perform the show parameter job_queue_proces Ses alter system set

 oracle   number  type precision, scale range   Number (p,s) P:1---38 S: -84---127 valid digits   : From the left of the first number not  0 , to the end of all numbers, the decimal point and minus sign are not counted in the number of

The relationship between the employee and the boss in the EMP tableInternal connections:The inner join is also called a natural connection, which is a common method of combining two tables. A natural connection compares columns in two tables,

Step1, first know that you want to import the DMP files in the database (such as AA.DMP) is that version of the export (export imported version to be consistent, of course, 11g files can export 10g dmp files). Step2, in the Sqlplus command box with

http://www.cnblogs.com/phoebus0501/archive/2011/01/17/1937141.html SYS: With DBA, SYSDBA, Sysoper (System Operator) roles or permissions, is the highest user of Oracle permissions and can only log on as SYSDBA or Sysoper and cannot log in as normal.

Oracle Database Basic Knowledge Summary 1. One instance corresponds to a database 2. Mode 3. Table Space (Segment > Area > Block) Improve management efficiency From the user's point of view, there are several patterns in a library (the pattern

Purpose This is tutorial shows you with a simple Hello world application using Oracle BPM Suite 11gr1. It also shows to the deploy of the process to the BPM engine and test it in the BPM Workspace. Time to Complete Approximately 2 hours Overview In

TDE from 11g to support the entire table space encryption, all stored in the table space of the image is automatically encrypted, do not need to further the table below the partition encryption. Table space encryption does not support encryption of

Oracle stored procedure basic syntax stored procedures1 CREATE OR REPLACE PROCEDURE Stored procedure name2 is3 BEGIN4 NULL;5 end;Line 1:The Create OR REPLACE PROCEDURE is an SQL statement that notifies the Oracle database to create a stored

Calculate the distance between two places based on latitude and longitude in Oracle function to get radians:CREATE OR REPLACE FUNCTION radian (d number) return numberIsPI number: = 3.141592625;Beginreturn d* pi/180.0;End; Test this function:Select

1 Simple query is to display the contents of all the data rows in a data table; 2 Execute the FROM clause in the query to determine the data source (which is actually all rows and columns) to control the data columns to display 3 If there is

If you do not know the password for the System,sys user in Oracle, you can retrieve it as follows:First, the database is entered as a regular user:Execute the following command in Sql*plus:Sql>connect/as Sysdba (can also be connected in the

Get table field: SELECT *From User_tab_columnswhere table_name= ' user table 'ORDER BY column_name Get Table Comments: SELECT *From User_tab_commentswhere table_name= ' user table ' ORDER BY table_name Get field Comments: SELECT *From

When you install ORACLE, if you do not reset the password for the following users, the default password is as follows: User name/password Logon identity Description Sys/change_on_install SYSDBA or Sysoper

ClusterwareAlert.log$GRID _home/log//alert.logOhasdOhasd.log$GRID _home/log//ohasd/ohasd.logAgent for OHASDOrarootagent_root.log$GRID _home/log//agent/ohasd/orarootagent_root/orarootagent_root.logOraagent_grid.log$GRID