Oracle

Application scenario: Because the data in the database involves confidential information, I hope to delete all the data at once, and keep the data table structure for the new project development program.Test Result: All data is deleted after

1 phenomenaInstall 12.1.0.2 RAC and check for errors:This was aprerequisite condition to test whether the OS kernel parameter ' panic_on_oops ' is properly set.OS Kernelparameter:panic_on_oops-this is a prerequisite condition to test whether TheOS

Recently I have a project to import the original Oracle database data into MySQL, after trial found MySQL GUI tools MySQL Migration Toolkit can be very convenient to the Oracle data into MySQL, Especially for CLOB, blob type of data also have very

Original: Navicat connection Oracle database Ora-28547:connection to server failed, probable Oracle Net Admin Error ResolutionThe navicat is connected to an Oracle server through an Oracle client. There are two types of clients for Oracle, a

Very good SQL statement optimization 34 article1) Select the most efficient table name order (valid only in the rule-based optimizer):The ORACLE parser processes the table names in the FROM clause in a right-to-left order, and the FROM clause is

Start Menu--oracle-oraclient10g_home1--Configure and migrate tools--net configuration AssistantOpen the window as follows:Select Local NET service name configurationClick NextSelect AddClick NextEnter the service name to develop the department's

Overview: In an Oracle database, partitioning (partitioning) allows very large tables (table) or indexes (index) to be decomposed into small manageable blocks (pieces). These blocks are called partitions (partitions). Each partition must have the

Installation EnvironmentLinux server: SuSe10 SP2 64-bitOracle Server: ORACLE11GR2 64-bitSystem Requirements Linux Installation Oracle System requirements System Requirements Description Memory

for convenience Project group developers use oracle11g RAC Database , Install a client and configure Plsql to access the database server .from Oracle official download of the following three packages : Instantclient-basic-win32-11.2.0.1.0.zip This

Flash Back Data archiveUse the Flashback data archiving feature to automatically track and archive data in tables with a Flashback data archive enabled. This ensures that the flashback query is able to gain access to the database object

The Oracle database has three standard backup methods, namely export/import (EXP/IMP), hot and cold backup. Exporting a spare is a logical backup, and cold and hot backups are physical backups.First, export/import (Export/import)With export, data

1.Id123567810111215Table name TT, using SQL to find the IDs in the ID column, for example, 4:--Creating tables and DataCREATE TABLETT (IDINTEGER);INSERT intoTTSELECT 1 fromDualUNION AllSELECT 2 fromDualUNION AllSELECT 3 fromDualUNION

Recently Learning Java development, the most frequently used tool is Java API, when we have no connected network, and the need for API documentation, it is obvious that we need to store an offline document on our computer.Here are the steps to

Below tables contains contant you need to consider while planning for a CDB. Action Considerations for a CDB Additional Information Plan the tables and indexes for the Pluggable

1. How does the invalid object come?The Oracle database would invalidate objects if a dependent object is changed. If I rebuild A table, the indexes on that table would become invalid because they use the table ' srowids and Rebuil Ding the table

Sqlplus sys/[email protected]: 1521/CMSX as SysdbaSql*plus:release 11.2.0.1.0 Production on Monday July 21 13:33:13 2014Copyright (c) 1982, Oracle. All rights reserved.Connect to:Oracle Database 11g Enterprise Edition Release

1. Knowledge Points: Can be read against the following record screenPL/SQL Program structure declare description section (variable description, cursor declaration, exception Description)begin statement sequence (DML statement) ... exception

Database usage-create and classify oracle Indexes Database usage-create and classify oracle Indexes An index is an optional data structure in a database. It is usually related to tables or clusters. You can create an index on a column or series of

The number/frequency of SQL queries in ORACLE and the number of SQL queries in oracle In ORACLE Database Application optimization, the execution Frequency/frequency of an SQL statement is also frequently concerned, because the execution of an SQL

Comparison between MSSQL and Oracle database transaction isolation level and lock mechanism, mssqloracle 1. Four Basic Features of transactions Atomic (Atomicity ):The operations contained in a transaction are considered as a logical unit.All are