Oracle

With the previous effort, all the jobs in the database are back to normal, there are no long-running sessions that hold locks, and there are no long-running transactions in the transaction view: Sql> SELECT instance_name from v$instance;

Description The official recommended migration to the same version, such as: 10.2.0.1 (32) migrated to 10.2.0.1 (64). Upgrade to 10.2.0.5 (64). First, the environment introduction Source Library Operating system version: OEL5.8 32bit Database

Introduction to custom aggregate function interfaces Oracle provides a number of predefined aggregate functions, such as Max (), Sum (), AVG (), but these predefined aggregate functions are basically adapted to scalar data (scalar), for complex

Oracle's transparent data encryption, which is part of the Oracle Advanced Security option, requires additional software costs.This option can be encrypted with a variety of means, including the use of wallet (PKCS#12 standard) and support for pkcs#1

I. Pre-upgrade preparation work 1. Confirm Database Version Use DBA Login to query the version of the current database Sql> select * from V$version; BANNER ---------------------------------------------------------------- Oracle Database

The Oracle tutorial you are looking at is the security policy for Oracle databases. ----Oracle is a relational database management system, which has powerful function and excellent performance, and occupies an important position in today's large

The Oracle tutorial you are looking at is about backup of Oracle databases. One, meaning: When we use a database, we always want the contents of the database to be reliable and correct, but due to computer system failure (hardware failure, network

Open SQL Server can only run on Windows, without the slightest openness, and the stability of the operating system is important to the database. Windows9x Series products are focused on desktop applications, NT server only for small and medium

The Oracle tutorial being looked at is: analysis and resolution of Oracle Common error codes (iii). Ora-00600:internal error code,arguments:[num],[?],[?],[?],[?] Reason: This error is usually an internal error of Oracle and is only useful for OSS

The Oracle tutorial you are looking at is that Oracle uses Pl/sql to manipulate COM objects. The Pl/sql is extended by Oracle company to standard SQL, dedicated to programming in Oracle databases, and is a third-generation process programming

Usually in the large database system, in order to ensure the consistency of the data, when the data in the database operation, the system will be the corresponding lock on the data. These locks have "read-only lock", "exclusive lock", "shared

One: Theory Oracle Intercept character (SUBSTR), retrieving character position (instr) case when then else End statement uses favoritesCommon functions: Substr and InStr1.SUBSTR (String,start_position,[length]) to substring, return

First, Oracle client and server-side communication mechanism 1, oraclenet Agreement as the following illustration shows, Oracle uses the Oracle NET protocol to achieve client-server connectivity and data delivery. Oraclenet is a software

One. Creation and use of stored procedures 1. Create the package and create the stored procedure in the program Create or replace PACKAGE NCS_ICP_TJ as /*lfx@ncs-cyber.com.cn*/ /* TODO Enter Package declaration (type, exception error, method, etc.)

Oracle decode functions are very powerful, and here's a detailed description of the use of the Oracle decode function, hopefully giving you a better understanding of Oracle decode functions. Oracle decode functionsThe Oracle decode function is an

Sql*loader (SQLLDR) is a high-speed batch data loading tool for Oracle. This is a useful tool for loading data into the Oralce database in a variety of flat file formats. SQLLDR can load large amounts of data in a very short period of time. It has

1, ASCII (C) Description: Returns the first character of C in the ASCII code corresponding to the decimal Example: Sql>select ASCII (' a ') a,ascii (' A ') b,ascii (' 0 ') c,ascii (') D from DUAL; A B C D -------------------- ---------- --------

Today a database login report ORA-09925 error oracle@linux-37:~/oradata> sqlplus/as sysdba sql*plus:release 11.1.0.6.0-production on Tue Nov 22 18:04:21 201 1 Copyright (c) 1982, 2007, Oracle. All rights reserved. ERROR:

First, unpack the cluster kit; Gunzip 10201_clusterware_linux_x86_64.gz CPIO-IDMV The place where the decompression is placed requires the permission of the Oracle user Second, start installing the Oracle RAC Cluster Kit, 2.2.1. Shut down the

Before 12c, if you want to achieve automatic column growth, it is usually achieved through sequence. However, this problem has been solved in 12c, and Oracle has postponed the identity column function, this function perfectly solves previous