Oracle

Previously, when processing Oracle's exports in code, if there is a return line in the field, processing is always very annoying, the practice is to put the field in the return line to kill, this is too dirt point, oh, but because of Oracle is not

When you debug Oracle's stored procedures and functions, you may need to output some debugging information, dbms_output with Oracle. The Put_Line () method can satisfy the requirements in most cases, but if the output is more than 256 characters, it

Count function usage in Oracle Count is used to count the results of a query with several records Example Table T_test name Gender Age Wages Tom Man 23 2000 John doe Woman 34

Execute explain plain for select in Pl/sql ... View Description Data reference: Oracle's common execution planning steps Here we introduce some common steps and algorithms in the execution plan. 1. Table Access Path (1) TABLE ACCESS Full:

Problems with JSP and Oracle are encountered(1) Write stored procedures in Oracle and read in Java find it is impossible to get a long type with getstring. and other varchar2 taken out together can be taken out as string valuesString

Reason for writing: 1. Oracle instance is created on 91. 2. In order to solve the problem of importing SDE user error without creating the SDE service pilot data, the sequence of data is introduced after the first SDE service is created. 3, because

Small knowledge Point: Dual is a pseudo table, is a single field, a row of records of the table. do not need to get the data from the table, but simply in order to get some of the information we want, and to complete through select, it is

Create the following in the Sqlplus:1, Package Sql> Create or Replace package types2 AS3 type CursorType is REF CURSOR;4 End;5/ The package has been created. 2. functionsql> Create or Replace function sp_listemp return Types.cursortype2 AS3 L_cursor

for (int i=0;iCLOB CLOB = (CLOB) noticeresult.getresult (). get (i). Get ("notice_content"); String content = ""; try { if (Clob!= null && clob.length ()!= 0) { Content = Clob.getsubstring ((long) 1, (int) clob.length ()); Content = this.

Recent project with Struts+spring+ibatis I am a novice, the first time with Ibatis So check the data online, download demo, run ... The beginning is more smooth, nothing more than some select/update/delete Later encountered a stored procedure call,

Solve the problem of EM,DBCA Chinese block garbled in Oracle 10g database under Linux Today in Linux installed Oracle 10g database, installed after the Linux system language switch to Chinese, found Oracle's EM (Enterprise Manager), DBCA (Database

The "Exp-00003:no storage definition found for segment ..." error occurs when you export a table with a LOB object using the previous version of EXP from version 9205 (or more).This is a bug for Oracle, and for this bug, the following processing can

Because of Oracle commercial copyright issues, MAVEN cannot download jar packages directly through the central repository, and if you want to use jar packs, you need to manually process them. Step One: Place the Ojdbc14.jar in the user's directory,

Oracle sequence detailing and creating a self-added primary key Oracle Sequence PRIMARY KeySequence: A database object provided by Oacle to produce a series of unique digits.L provide a unique numeric value automaticallyL Shared objectsL primarily

Symptom: Undo table space is getting bigger and longer this end data crashes because of insufficient disk space;Problem Analysis: The causes of the problem are mainly the following two points:1. There is a large volume of transactions so that Oracle

Oracle gets the current date and date format Get system Date: Sysdate ()Format Date: To_char (Sysdate (), ' Yy/mm/dd HH24:MI:SS)or To_date (Sysdate (), ' Yy/mm/dd HH24:MI:SS)Format Number: To_number                Note:      to_char  Converts a

I. Database user management 1. Users and Security The security of Oracle databases includes the mechanism for controlling database access and use at the object level, which is implemented by database users. The database user is defined in the

Stored Procedures 1 CREATE OR REPLACE PROCEDURE Stored procedure name 2 is 3 BEGIN 4 NULL; 5 end; Line 1: The Create OR REPLACE PROCEDURE is an SQL statement that notifies the Oracle database to create a stored procedure called skeleton,

1: View the table space situation Select Tablespace_name, FILE_ID, file_name, Round (Bytes/(1024 * 1024), 0) Total_space From Dba_data_files ORDER BY Tablespace_name 2: Create a table space CREATE tablespace

Oracle Common error: ORA-01403 ORA-06512: In "MALL." Pub_yang_logon_organ ", line 88 ORA-06512: On line 1 At Com.yangcq.flow.processflow.ProcessflowFunction.execute (processflowfunction.java:102) At