Oracle

Make a report as required Time two-color ball, winning ..... 200905 sales 200906 sales 200907 sales 200908 sales   The result of an SQL statement is: F_yearmonth, lot_name, money 200905 dual-color ball 50 200905 wins/loses 100 2

This document briefly records the last data recovery process. The reason is that the user has used the data in the basic data table, and the deleted data is used in another table, in addition, when the data table was created, it was convenient to

Differences: 1. the length of char is fixed, while the length of varchar2 can be changed. For example, the storage string "ABC", for char (20 ), it indicates that the characters you store will occupy 20 bytes (including 17 null characters), while

Recently, many people in CSDN have asked questions about the interaction between java and oracle stored procedure/function. I learned it step by step. I have encountered similar problems before and often get confused. But now some things seem to

Stored Procedure instance:Procedure test_c (temp out varchar2, A in varchar2, B in varchar2)IsBeginTemp: = A | B;End; Call method:Note: you must add Imports system. Data. oledb to the beginning of the program. Dim dbconn as new oledbconnectionDim

Background: Some functional algorithms that require a lot of database operations, or use application code to connect to operation data multiple times, may cause high performance loss, or, if the table name to be queried exists in the database, we

Procedure split_string_sp (p_instr in varchar2, -- input string, separated by commas (,), input parameter p_strs out varchar2, -- extract the remaining strings after 1st values, output parameter p_curr out varchar2, -- the truncated 1st values and

(Can be applied in a report Group) A materialized view is a database object that contains a query result. It is a local copy of remote data or is used to generate a summary table based on the sum of data tables. Materialized View stores data based

DeclareMaxrecords constant int: = 1000;I int: = 1;BeginFor I in 1 .. maxrecords loopInsert into UserInfo (UserID, login, password, firstName, lastName, ISADMINISTRATOR)Values (SYS_GUID (), TO_CHAR ('20140901' + I), 'Password', 'fristname', 'lastname'

Drop user OBS_ZHUJP CASCADE;Create user OBS_ZHUJP profile default identified by OBS_ZHUJP default tablespace users temporary tablespace temp account unlock;Grant delete any table to OBS_ZHUJP;Grant drop any table to OBS_ZHUJP;Grant insert any table

Abstract: The following articles mainly involve the actual application of Oracle JOB interval reference.If you are interested in the relevant content for the JOB interval reference, the following articles will help you. Label: Oracle JOB If you

1 ). -- Query locksSelect LOCK_INFO.OWNER | '.' | LOCK_INFO.OBJ_NAME as "existing object name already", -- object name already (already pinned)LOCK_INFO.SUBOBJ_NAME as "subitem name already exists", -- subitem name already exists (already

Oracle 10 Gb get execution plan with 1 sqlplus 2 PL/sqldeveloper tool 3 Toad 2 PL/SQL developer SELECT count(*)FROM user_beh_sum_day_201203 a WHERE a.operid = 1006 AND a.channelid = 12 The following observation

Restore full backup of another machine on a new machine 1. Remember the directory structure and DBID of the original machine. 2. Create the corresponding directory structure on the new machine and pay attention to the user

If you want to restart the listener, you cannot find it. [Oracle @ node1 ~] $ Srvctl stop listener-n node1CRS-0210: cocould not find resource ora. node1.LISTENER _ NODE1.lsnr. View listeners [Oracle @ node1 ~] $ Srvctl config nodeapps-n node1-lThe

RMAN> show all; RMAN configuration parameters are:Configure retention policy to redundancy 1; # defaultConfigure backup optimization on;Configure default device type to disk; # defaultConfigure controlfile autobackup off; # defaultConfigure

During the interview, some companies asked ORACLE about the development shortcomings? I didn't understand it at the time. Recently, I think that is the use of UPDATE and temporary tables.   Originally, I wanted to generate statistical data for a

A single-instance database generally has the database name db_name, Instance name: instance_name: Service name: service_names. Generally, the three names are consistent. There are some differences in the RAC cluster. In terms of planning, we will

Orastress mainly tests the database pressure. It can test the CPU or memory pressure of the database (in read-only mode), or test the I/O capability of the database using two methods: normal INSERT and direct path INSERT.Orastress can only run in

Mainly divided into two platforms 1. On an ORACLE Server   Configure the environment [Ba @ nod1-ba lib] $ cat ~ /. Bash_profile#. Bash_profile# Get the aliases and functionsIf [-f ~ /. Bashrc]; then.~ /. BashrcFi# User specific environment and