Oracle

In Oracle, the default listener port number is 1521, once someone scans the port number will know that this server is an Oracle database server, there is a great security risk, here, teach you how to modify the Oracle default port number is 9999:1.

InsertID= "Insert"ParameterType= "Com.inspur.biz.entry.SpLackApply"> select ' qlsq ' | | Sp_lack_apply_seq. Nextval as bill_id from DUAL Insert into sp_lack_apply (bill_id, organ_id, Organ_name, Apply_type_value, Apply_type_name, APPLY_PN,

first, the concept of triggers triggers are stored as separate objects in the database, unlike stored procedures and functions, where stored procedures and functions require user-displayed calls to execute, and triggers are initiated by an event

Invoking an Oracle stored procedure in JavaThis article describes how to invoke Oracle's stored procedures through Java1. Writing Stored ProceduresCREATEORPROCEDURE sp_pro3(sp_name VARCHAR2,sp_sal NUMBER )ISBEGIN --根据用户名修改工资 UPDATE emp SET sal=sp_

---create waterfallCreate or replace type Waterfall is Object (name Varchar2 (), height number);--Create RiverCreate or replace type Rivertest is Object (name Varchar2 (), length number);Create or replace procedure Anydatatest/** This example

Hello everyoneLast week wrote an anonymous method, a lot of readers, very happy, I believe we have from the people's reply, the. NET has a more profound understanding.OK, now the topic, all kinds of databases have a corresponding update of the table

Each topic contains some knowledge points, carefully do the problem slowly understand it!To find out the number of records per table in the current user mode, take the Scott user as an example, the results should be as follows:DEPT ........ .........

Because the job content is written dead, if the use of remap imported to another user, its log_user, and so on, and the job ID is fixed, and the current library is likely to conflict, it is recommended to remove the job's DDL.DBMS_METADATA.GET_DDL

#coding:gb18030 import cx_Oracle import xlsxwriter import time import sys reload(sys) sys.setdefaultencoding("gb18030") con = cx_Oracle.connect("user/[email protected]") cursor = con.cursor() query1 = cursor

1.dblink IntroductionDblink database link is a link to a database that spans the local database2. Using syntaxBasic syntaxCREATE [shared][public] Database link link_name[CONNECT to [user][current_user] identified by password][Authenticated by the

Select To_char (0.1) nums from dual;It is observed that if the integer digits of the decimal are 0, the converted string does not have the preceding 0, and if the preceding 0 is required, a certain rule is required to format it, as shown belowSelect

Hardware environmentIBM X3850 X5 Server 4 CPU 10 cores Software EnvironmentWindows R2 Enterprise Edition, Oracle 11.2.0.1 In the process of installing Oracle at customer site today, the software, monitoring is installed, and finally in the DBCA

The memory structure in Oracle consists of two main categories: SGA and PGA, in which the SGA represents the system global area and the PGA represents the global area of the program.Oracle memory is primarily stored with executable code (PL/SQL,JAVA)

1. Stop the application layer of the various programs.$lsnrctl stop3. Under exclusive system users, backup the control files:Sql>alter database backup controlfile to trace; sql>alter system switch logfile;   5. Under exclusive system users, run the

Image stored by oracle10.2.0.4rac in hpuxmcsg ModeA recent case:Status quo: hp-ux operating system, oracle 10.2.0.4 rac, mcsg mode, two ocr and three voting disks correspond to one lv in the same concurrent volume group.Objective: To create images

How to obtain index recommendations in Oracle 10 GB One of the best features of racle 10G is the Advisory Framework, a collection of optimization consultants that can help you make full use of your database. One of them, the SQL Access Advisor,

ORA-14402: updating partition keyword columns will cause partition changes, ora-14402 keywords By default, oracle Partition Table for partition fields is not allowed to update the operation, if there is a forward update on the partition field, the

Oracle problems with number type conversion to_char Select to_char (0.1) nums from dual; It is observed that if the integer of a decimal number is 0 and the preceding 0 is not displayed after the string is converted, and if the preceding 0 is

Oracle cursor IntroductionOracle cursor Introduction The PL/SQL cursor in Oracle stores the data queried in the database in the memory as a temporary table. The cursor can operate on the data stored in the memory, one or a group of data is returned,

[Oracle] view INVALID of the CBO version Source: Oracle 11.1.0.7 Target end: Oracle 11.2.0.4 In the CASE of a recent data migration, the status of a VIEW changes from VALID to INVALID after the data migration is completed. The VIEW creation