Oracle

-- Create Function Type create type strcat_type as object (cat_string varchar2 (4000), -- set the initialization of the custom aggregate function. From here, a Aggregate Function static function odciaggresponinitialize (cs_ctx in out strcat_type) is

1. Forget the logon password of a user except sys and system.Log On As A sys (or system) user. Conn sys/pass_word as sysdba; Use the following statement to modify the user password. Alter user user_name identified by newpass; Note: The

Export data to an Excel file: select the data table -- query data -- select the data to be exported -- Right-click Copy to excel to import data to the database: 1. Prepare the data to be imported in Excel. Specific Operation: In Excel, set the first

In-depth research on the materialized view (mview) of Oracle 4 Now, when you move a base table in the first article, you will find that you cannot refresh the table quickly. You must refresh all the tables as follows: SQL> ALTER TABLE

1. Data Dictionary:The system information of the database is recorded. It is a set of read-only tables and views. All users of the data dictionary are sys users. You can only execute the SELECT statement on the data dictionary, and the maintenance

Obtain the table's primary key column name SQLSelect * From user_cons_columns Where constraint_name = (select constraint_name from user_constraints Where table_name = 'bst _ favorite 'and constraint_type = 'P '); Remember: The table name must be in

Oracle's default xml db sets the default http port to 8080, which is a very common port. Many other webservers use this port, so we need to modify it. Three methods:1. Dbca, select your database, and then select standard database features->

Small Example of calling Oracle stored procedure in JSP * Execute an insert statement and pass the parameter */Create or replace procedure p_test2 (I in number)BeginInsert into T values (I, 'x' | to_char (I ));Commit;End;/ AAA BBB String driver

Oracle MySQL DB2 SQL paging Oracle , MySQL , DB2 , SQL , Pagination Oracle Select * from (select rownum, name from user_tables where rownum Where rownum> startindex If order is added, it will be more

In Windows, how does one completely uninstall the Oracle database? A: The procedure is as follows: 1. log on to the NT administrator; 2. Stop all Oracle services through the control panel> service; 3. Open the Registry (Regedit command) and delete

Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 Ing between object and database column property types: Oracle column type Entity column type Entity Java type

Concurrent request of Oracle EBS"Gather schema statistics"Is a performance-related concurrent program that samples data on tables, columns, and indexes and generates statistics. Cost-based OptimizerOptimization CBO will evaluate the execution plan

1. Table Name and column name naming rules (1). It must start with a letter; (2). The length cannot exceed 30 characters; (3) Oracle reserved words cannot be used; (4). can only use the following characters A-Z, A-Z, 0-9, $, # and so on.   2. Data

Pro * C has three common dynamic SQL technologies: It is used to process dynamic SQL statements that do not contain host variables and cannot be used for select statements. It is used to process the dynamic SQL statements with the number and type

The types of Oracle Data Dictionary views are: User, all, and DBA. User _ *: Information about objects owned by users, that is, information about objects created by users All _ *: Information about objects accessible to users, that is, information

Oracle built-in role connect and resource Permissions ========================================================== ================================ 1. What is a role?If a group of people have the same permissions they need, it is inconvenient to

In modern multi-user multi-task systems, it is inevitable that multiple users access a shared object simultaneously. This object may be a table, row, or memory structure, to solve the data security, integrity, and consistency problems caused by

 1. Oracle binary options description   For more information about oracleoptions, see: Summary of Oracle component series Http://blog.csdn.net/tianlesoftware/article/details/7339998   We can view the related information through the V $ option

 1. SYS. audses $ sequence description 1.1 MOS description Mos document: How sessions get their audsid identifier [ID 122230.1]   Sessionsconnecting to an Oracle database have a number of identifiers assigned to themwhich can be found in the V $

    Run root. Sh in RAC of Oracle 11.2.0.1 and an error is reported as follows:   [Root @ Rac1 Oracle] #/u01/APP/11.2.0/GRID/root. Sh Running Oracle 11g root. Sh script...   The following environment variables are Setas: Oracle_owner = Oracle ORACLE_