oim oracle

Differences between Oracle procedures and functions: oracle process functions Oracle process and function are expected to be more familiar. The following describes the differences between Oracle process and function. We hope that you can have a deeper understanding of Oracle

Solution to oracle initialization or shutdown in SS error in oracle Database 1. First, the cause of the problem, this error occurs when a file under oracle \ oradata \ oradb is deleted by mistake. 2. symptom: SQL * Plus cannot be connected, the following error is displayed: ORA-01033: ORACLE initialization or shutdown

First day of Oracle Database learning, first day of oracle Database Crud addition, deletion, modification, and query create read update delete1 -- oracle Database InstallationBy default, the system creates two user-defined sys and system password.Super administrator: sysAdministrator: systemPassword 56152 -- start the Database ServiceServiceListener 3 -- access t

Flashback in oracle and oracleOverview: Flash back is part of Oracle's powerful Database Backup recovery mechanism. When a logical error occurs in the database, flash back technology provides fast and minimal recovery (most flash back functions can be completed online in the database ). It should be noted that the flash back technology is designed to quickly restore logical errors. For errors caused by physical damage or loss of media, flash back tech

Briefly describe the query and Solution to deadlocks in Oracle databases, and briefly describe oracle Deadlock PrincipleIf you update or delete a column in a table in the database, this statement is not mentioned after the execution.The statement that updates this column of data is in the waiting state during execution,In this case, this statement has been executed, but it has not been successfully executed

Oracle-07445 [kgghash]: Oracle BUG causes the process to be killed when updating the LOB FieldSymptom:The user reports that a DB connection is accidentally killed. The following information is found in the alert Log during troubleshooting:Mon Apr 22 14:49:58 2013Exception [type: SIGSEGV, Address not mapped to object] [ADDR: 0x2B1733615000] [PC: 0x777EE03, kgghash () + 367]Errors in file/

This document describes how to install and create an Oracle database in silent mode. The User Creation, user group, and environment settings are the same as those for graphical installation. For specific settings, see the blog :. Silent Installation involves three steps: Silent Installation of oracle software, silent upgrade of oracle software, and silent creatio

Oracle foreign key cascade deletion and cascade update, oracle key level update Cascading Deletion Oracle has three behaviors: no action (similar to RESTRICT), CASCADE, and set null. The following uses the student-class as an example to describe how to delete Foreign keys in different situations. A student belongs to a class and the primary key of the class is t

Oracle session and connection optimization, oracle session 1. Modify the Oracle session and maximum number of connections 1. view the maximum number of connections SQL> show parameter processes; NAME TYPE VALUE-----------------------------------------------------------------------------Aq_tm_processes integer 0Db_writer_processes integer 3Gcs_server_processes int

Oracle control file multiplexing and oracle control multiplexing 1. Control File multiplexing 1. show parameter control-- View Control File InformationShow parameter spfile-- Check whether spfile exists.Create pfile from spfile;-- Generate pfileShutdown immediate-- Close the database2. Modify the pfile and add multiple paths.Vi $ ORACLE_HOME/dbs/initORCL. oraCopy the original controlfile to the newly added

Oracle _ view, oracle View Oracle _ view ① View1. A view is a virtual table.A view is built on an existing table. The tables created by the view are called base tables.The statement that provides data to the view is a SELECT statement, which can be understood as a stored SELECT statement.View provides users with another form of representation of base table data 2

Since Oracle9i, Oracle's external Table technology (Oracle External tables) has been greatly enhanced, with external tables accessing external data enhances the ability of Oracle databases and external data sources to interact with data, for data warehousing and ETL, These enhancements are greatly facilitated by data access. One of the most common examples for DBAs is the use of external tables to access w

The Oracle InStr function appeared in the recent project, so I looked up information about it on the Internet.Usage of InStr and SUBSTR in OracleUsage of instr in Oracle:The format of the InStr method isINSTR (source string, the string to find, starting with the first few characters, to find the ordinal number of the first match)Returns the location found and returns 0 if it is not found.For example: INSTR (' CORPORATE floor ', ' or ', 3, 2), the sour