Oracle

There is a graph that clearly shows the difference between the physical and logical structure of Oracle, as explained by:Each database must consist of one or more table spaces. (One-to-many relationship)Each tablespace must consist of one or more

1. give Scott users access to the connection:Grant Connect to Scott; 2. Create a new Java project in MyEclipse to import the JDBC Package (Classes12.jar):Right-click Project bulid path-〉add External Archives Select Classes12.jar3. Create a new Java

Dual is a virtual table with only one column.You need to use this table when querying for time or date objects.For example: select Sysdate from dual;Because in Oracle, the query statement must have a keyword select ... from tablename; Only the

1. Creating a Table ClassImport java.sql.Connection;Import Java.sql.ResultSet;Import java.sql.SQLException;Import java.sql.Statement;Import java.sql.PreparedStatement;public class lx01{public static void Main (string[] args) throws SQLException,

1. Error descriptionORA-12801: Error signal ORA-01722 in parallel query server P007: Invalid number 12801.00000-"error signaled in parallel query server%s" *cause:a parallel qu Ery server reached an exception Condition.*action:check the following

Querying all users ' tables, views, etc. Select * from All_tab_comments;2. Query This user's table, view, etc.Select * from User_tab_comments;3. Query the column names and comments for all users ' tablesSelect * from All_col_comments;4.

Problem Analysis:1, installed the odp.net after the problem;2, the concrete performance is D:\app\Administrator\product\11.2.0 below a more folder2.1.1, D:\app\Administrator\product\11.2.0\client_2Workaround:1, will D:\app\Administrator\product\11.2.

The first method:Log in with the system account like Sys as SYSDBA1, check the database lock, the source and type of diagnostic lock:Select Object_id,session_id,locked_mode from V$locked_object;or use the following command:Select

1. One morning found on the machine on the Tnslsnr service did not start, go to the management tool point Oracleorahome90tnslistener This start, but found that the start of the automatic shut down immediately, Halo *&^2. Under the command line:>

1.1 Go to Sqlplus launch instance[[email protected] ~]$ su-oracle--"Switch to Oracle User"[[email protected] ~]$ lsnrctl Start--"turn on monitoring"[Email protected] ~]$ Sqlplus/nolog--"Go to Sqlplus"Sql> conn/as SYSDBA--"Connect to SYSDBA"Sql>

OMF Related parameters:Db_create_file_destDefines the location of the default file system directory or Oracle ASM disk group where the database creates datafiles or Tempfiles when no file specification are given in the create operation. Also used as

Merge into Temp1 ausing (select IDFrom (Select IDFrom Temp1where ID = ' SYSTEM00000100000010846 'UNION ALLSelect null ID from dual)where rownum = 1) bOn (b.id = a.id)When matched thenUpdateSet report_date = To_date (' 2014/5/22-0:00:00 ','

There is a figure that clearly shows the differences between the physical and logical structures of Oracle. For example:Each database must consist of one or more tablespaces. (One-to-many relationship)Each tablespace must be composed of one or more

Since we have servral machine on my testbed (fedora), and if I need start some VMs on that, I have to go to the server and using the VirtualBox GUI to start it. now I am bored of this, I want to start the VMs and connect with termial using my laptop.

1. Check System package installationRpm-qa | grep binutilsrpm-ivh sysstat-7.0.2.rpmbinutils-2.17.50.0.6compat-libstdc ++-33-3.2.3compat-libstdc ++-33-3.2.3 (32 bit) elfutils-libelf-0.125elfutils-libelf-devel-0.125gcc-4.1.2gcc-c +

Today in the virtual machine environment experiment, when changing the rac environment to flashback on, reported a ORA-27054 error, the error code is as follows: Errors in file /u01/app/oracle/admin/racdb/udump/racdb2_ora_25551.trc:ORA-38701:

First, explain that ORACLE has an Optimizer. The optimization mechanism of ORACLE begins with Optimizer. There are two concepts clearly: Optimizer has two ways to optimize ORACLE. One is Rule-Based and we call it RBO (Rule-Based Optimization ), one

Oracle Ebs R12 SLA and GL relationship changes SLAConcept: SLA (Subledger Accounting)A subaccount is short for subledger accounting. Its literal meaning is the subledger accounting entries. SLA & GLLink: R12The MOAC feature is enabled in the

Enter the command: alter system set utl_file_dir = '/home/oracle/logmnr' scope = spfile; Error: Error cause: No spfile file is used to start the database. Solution: Start the database with the spfile file. 1: Enter the $ ORACLE_HOME/dbs path

1. Connection SQL * Plus system/manager 2. display the current connected user SQL> show user 3. view the users in the system SQL> select * from all_users; 4. Create and authorize a user SQL> create user a identified by a; (created in the SYSTEM