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When Oracle sqlplus is used in linux, the arrow keys do not move the cursor left or right by default, and the commands are up and down. Therefore, if you want to execute the commands that have already been executed When Oracle sqlplus is used in

There is a stored procedure, which has 4 dblink, but because of business needs, but also need to add a few, when added to the fifth, the system suddenly throws a error: ora-020 There is a stored procedure, which has 4 dblink, but because of business

1. query the list of log files used: select * fromv $ log; 2. query the log files of the Group in use: select * fromv $ logfile; 3. force log switch: altersystemswitchlogfile; 4. query historical logs: select * fromv $ log_history; 5. archiving mode

Environment: Oracle11g Problem description: run the following statement in the database to view the tablespace utilization: selectd. tp_name tablespace name, e. contents type, e. sta Environment: Oracle 11g Problem description: execute the following

In Oracle databases, Oracle triggers are automatically executed to respond to database changes. The following describes how to use Oracle triggers for your reference. In Oracle databases, Oracle triggers are automatically executed to respond to

Oracle process and function are expected to be understood by everyone. The following describes the differences between Oracle process and function. We hope that you can learn more about Oracle process and function. Oracle process and function are

The primary key and index of data are usually required. Especially when a table has a large amount of data, the index and primary key are even more necessary, which can provide data query efficiency. I, The primary key and index of data are usually

Problem description: Oracle on the master disk of the school data center is installed with Oracle10g and transmitted to other machines. Oracle on the master disk can be used normally, but Oracle cannot be started when other machines start the Oracle

Enter mysql-uroot-pmysqlgt; enterpassword: rootmysqlgt; q to exit mysql3. Add a user, set the password, and Enter mysql-u root-pmysqlgt; enter password: rootmysqlgt; \ q to exit mysql3. Add a user, set the password, and 1. delete mysql Sudo apt-

In other words, just the establishment of a database server can only describe what it can do, and it does not mean what it can do stably. The efficiency and comprehensiveness of disaster recovery are also the stability of the system. In other words,

1. Start dbconsole [oracle@www.linuxidc.com ~] $ Emctlstartdbconsole: OC4JConfigurationissue. optoracleprodu 1. Start dbconsole [oracle@www.linuxidc.com ~] $ Emctl start dbconsole if the prompt is displayed, the following message is displayed: Enter

Take a closer look at other functions of the oracle nested table and make a simple arrangement. Oracle provides two methods to use nested tables: 1. Using PLSQL code as an extended PLSQL language; Take a closer look at other functions of the oracle

For permission control in A project, you need to use the Organization class to control the data that can be accessed. For example, the person in organization A can view the data of the personnel in its subordinate organization, or only organization

The Oracle database update was used a few days ago, but there were a lot of problems with this simple problem. So I will search online materials and summarize them here for The Oracle database update was used a few days ago, but there were a lot of

I found a book on the Internet, which is proficient in Oracle10gPLSQL programming gt. After reading this book, I think it is quite good. It is suitable for programmers who are new to Oracle to read it. I found a book on the Internet that is I

This article describes how to install OracleDatabase11gRelease2 (11.2) 64-bit on a Fedora1464-bit. This article is based on This article describes how to install Oracle Database 11g Release 2 (11.2) 64-bit on Fedora 14 64-bit. This article is based

After debugging and searching for relevant information, we found the cause of the problem: when connecting to the database through jdbc, we need to use the database's sid_name instead of the database's services_name. After debugging and searching

StoredProcedure is a set of SQL statements for specific functions. It is compiled and stored in the database. By specifying the name of the stored procedure and giving Stored Procedure is a set of SQL statements for specific functions. It is

Sometimes, we want to view the attribute statements of objects such as tables, storage, and triggers in the following two ways: 1. query the all_source Table 2. Use the DBMS_METADATA Package. 1. Pass Sometimes, we want to view the attribute

1. Check database events and wait for SELECTevent, total_waits, total_timeouts, time_waited, average_waitFROMv $ wait E 1. Check database events and wait for SELECT events, total_waits, total_timeouts, time_waited, average_wait FROM v $ wait E 1