Oracle

The company has two databases in the environment, the version is different, one is 11g R2, the other is 10g R2First, export the database backup file with exp under 11g R2, and find that some of the tables are missing.Originally this part of the

Log on to the operating system where the Oracle database server is installed. Open a Command window: (My demo machine is windows) To view the settings for the environment variable ORACLE_SID:Windows:echo%oracle_sid%Linux:echo $ORACLE _sid

SetServerout on;---This can only be used in SQL Plus, meaning that the server output information is displayed in the window. DeclareN Number:=1;---Define a variable (of course you can define multiple variables consecutively)Vvarchar2( -):='Baize'; N2

(a) Table1. TableTo create a table:Create Table Number varchar2 ());--Add a new column:Alter Table add photo blob;--Modify ColumnsAlter Table varchar2 (a);--Delete ColumnsAlter Table Drop column photo;--Rename ColumnsAlter Table column to username;

There is a new feature in ORACLE 11G that does not allocate segment when the table has no data to save space.Workaround:1) Insert a row, and then rollback will produce segment.The method is to insert data into the empty table and then delete it,

Learning steps:1 An Oracle EBS demo environment or PROD environment2. Copy the following code into PL/SQL3. Cooperate to interpret the analysis results4. If the webpage is a bit messy, please copy it to txt to view/* Suppose a manager represents a

Lab Environment:SOURCE Library: 192.168.2.200 Sid=testdbTarget Library: 192.168.2.100 Sid=testdbExperimental Purpose:Use Impdp+dblink to import all data from a jtrms user on a 192.168.2.200 database to the target database 192.168.2.100Note: Using

Note: A statement that is not executed every time is logged (if the executed statement is found in the table, Oracle does not record again, meaning that the statement executed this time is identical to the last or previous statement, and the

Estimating Database Storage IO performance based on Dbms_resource_manager packet under Oracle1.calibrate_ioUse calibrate_io stored procedures to estimate database storage IO performance. The input and output of the stored procedure is as follows.

Problem Description:Through C # Reference Oracle.ManagedDataAccess.dll access to Oracle, wrote the following code, in the function of normal access, but the compiled EXE placed on the server can not be accessed, has been prompted to log on

First, create a user:Login with system administrator, right click on uers to create new,General: The default space is selected by users, temp table space is selected for temporary tablespace, and profile selection is default.Object permissions: Do

All below actions should is executed with "Oracle" user Account1. Check The status of listener$ LSNRCTL Status2. If the listener isn ' t be started, start it$ lsnrctl Start3. Set the "ORACLE_SID" environment to the DB instance's SID which you want

Database objects: Tables, views, indexes, sequences, synonyms, stored procedures, stored functionsStored procedure: Refers to a subroutine stored in the database for all user programs called stored procedures, storage functionsSame point for stored

Reference http://www.cnblogs.com/jerrmy/archive/2013/03/13/2958352.htmlOracle is a little different from other databases when creating a table, such as SQL Server can add identity to a field of type int (1), the field will be increased by +1, and

The Nls_length_semantics parameter is a byte-and char-two value that is specified for a column that is designed to create char and VARCHAR2 two character types, specifies the length of bytes used, or uses the character length definition, which

Oracle static monitoring note for specific explanationsThere are a lot of articles on the Internet about Oracle monitoring static register. But most of them are simply said, and there are no specific examples. Here, combine the Oracle 10gr2.0.1

1. Listener refused the connection with the following errorAfter installation, if you encounter the following problemsStatus: Failed-Test failed: Listener refused the connection with the following error:ORA-12505, Tns:listener does not currently

The start With...connect by prior clause in Oracle uses the connect by as a structured query with the basic syntax:Select ... from tablename start with condition 1Connect by Condition 2Where Condition 3;Cases:SELECT * FROM tableStart with org_id = '

Here are some notes from the 2013 when looking at the Oracle Concept Manual, which is now organized as follows (possibly repeating the contents of some other articles):20,131,012 weeks six Oracle Concept manual Chinese version 4th chapter

One, FSG reportRg_report_axis_sets RRAS,eqSELECT r.axis_set_id------------------Find the ID under several tables withFrom Rg_report_axis_sets RWHERE r.name = ' cross-strong insurance profit and Loss Statement-business '----name of the foreground