how to find version of oracle database

How to downgrade an Oracle database from 11.2 to a previous version This document can be used to downgrade the upgraded database from Oracle 11gR2 to the following guidelines and checklists: Oracle 10gR1, Oracle 10gR2, and Oracle 11gR1. This

Oracle9i was released on Oracle Open World in October 2000, introducing many new features for Oracle databases, application servers, and development tools. Oracle9i is the industry's first complete and simple software infrastructure for a new

(I) lsof application instance ① Find the program occupying the specified port: [root@temp ~]# lsof -i :80COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEhttpd 10278 root 3u IPv6 37812 0t0 TCP *:http (LISTEN)httpd 10280

Oracle is a relational database management system suitable for large-scale, medium-sized, and micro-computers. It uses structured guery language as its database language. SQL mainly includes three functions: Data Definition, data manipulation

Abstract: This article describes how to install the oracle9.2.0 database in the RedHat Linux9 environment. Keyword: oracle9i RedHat Linux9 Kernel Parameter environment variable Oracle817 is always used in the RedHat linux7.1 environment. Sort out

The racle database system is a complex software system. Without understanding its internal structure principles and relationships, it is impossible to design and Compile High-Quality application software systems or manage a complex application

Common exceptions:ORA-14025: Cannot specify partition for a solid view or a solid view logOra-14026:partition and cluster clauses repel each otherORA-14027: Only one partition clause can be specifiedORA-14028: Missing at or values

Oracle basic concepts and comparison with informix I. ConceptsUser: informix directly uses the user management system of the operating system. Generally, root and informix are used as super operators to manage other users. Oracle has its own user

? List the purpose of creating a replica database? Select a method for replicating a database? Copy a database using Rman? Copy a database using Rman backup? Replicate a database based on a running instance Using the replica database ?

1,OracleOfficial preparations recommended by the company Generally speaking, Oracle has a lot of examination content, and the examination questions are also very detailed, it has a strong requirement on hands-on ability. Therefore, in order to be