tns lookup

Create a new database in Oracle, delete it today and then log on Sql*plus (because the Oracle_sid value in the registry is null when the database is deleted), Ora-12560:tns: Protocol adapter error. Ora-12560:tns: Workaround for protocol Adapter

　　 Introduction As we all know, JDBC (Java database connection) is an important part of Java 2 Enterprise Edition. It is an API Based on the SQL layer. By embedding SQL statements into JDBC interfaces, you can use Java programs to perform almost

Application of Data Sources in JDBC (1) IntroductionAs we all know, JDBC (Java database connection) is an important part of Java 2 Enterprise Edition. It is based on the SQL LayerAPI. By embedding SQL statements into JDBC interfaces, you can use

# # # Bash in the History command in the Shell----------In daily operations, we often use the history command to check the historical commands executed on this machine, or at what time the commands are executed. The history command does not show the

July 8, 2014, I regained Oracle, the computer was previously installed Oracle10, because to import the 11 version of the DMP table file, it is suggested that the version of the low Oracle can not import, only the version of the Oracle import version

Oracle11gr2 also provides a new feature called RACOneNode. Oracle finds that the deployment of some RAC is purely for high availability, and more users are using virtualization. Oracle 11g r2 also provides a new feature called RAC One Node. Oracle

Note:This article is excerpted from JDBC & Transaction to answer questions and answers from many friends. If you believe that the content of this article has violated your rights and interests, contact the Administrator to modify it. Several

Note:This article is excerpted from JDBC & Transaction to answer questions and answers from many friends. If you believe that the content of this article has violated your rights and interests, contact the Administrator to modify it. Several

In general, Oracle 11g R2 RAC provides the following features: High Availability: shared-everything mode ensures that services are not stopped when a single node fails, and other nodes in the cluster will take over quickly Scalability: multiple

The undo tablespace is an important part of the Oracle architecture. The reason why we can roll back is that we have it. Any data modification in the database will generate the pre-image in the undo tablespace. One is rollback, and the other is