Oracle

1, the role of swapBoth Systems management and DBAs know that there is a swap partition on both Linux and UNIX systems, which is an example of virtual memory on a Windows system.When the system's physical memory is not enough, it is necessary to

/*Note: If you already have the appropriate user and table space, you will need to delete the appropriate user and tablespace before re-establishing all*/--Delete UserDrop UserUSERNAMECascade;--Delete Table SpaceDropTablespace data_temp including

Transferred from: http://zhengdu.net/archives/152First, see if the remote end Oracle service is startedIf it does not start, start the Oracle servicePS: Create or delete Oracle ListenerSecond, remote-side Oracle ConfigurationLISTENER_ORCL =(ADDRESS =

Explore Oracle The database upgrade seven11gR2 to 12c Insert after upgrade complete PDBObjective:       fromOracle 12cat the beginning, the concept of container database is introduced, which can implement database plug-in operation, such as:now let'

The first step: the client sends the statement to the server-side executionWhen we execute a SELECT statement on the client, the client sends the SQL statement to the server side, allowing the server-side process to process the statement. That is,

In this paper, the import and export of Oracle data IMP, exp Two commands are introduced, and its corresponding parameters are described, and then through a number of demonstration examples to drill, deepen understanding.At the end of this paper, we

Working Group accidentally touches the virtual machine, is curious to install one to play. Later I heard that the database can be installed on the virtual machine, go home on the busy, and did not have a long time to succeed, and then my friend Xiao

Row migrations and row links lead to degraded Oracle performance, this article describes what row migration and row links are, what they do, how to judge them, and provides solutions to them.What is row migration and row link row migrationOracle's

The idea is to write a function to query the data conditionally, if the query to the data is updated, if no query to the data is inserted:Create or Replace function Fn_merge_index (statdate in date, cpid in VARCHAR2, Indextypecode in number, Inde

about several Oracle functions that handle the number of decimal places ()1. Take a few decimals roundedSelect round(1.2345,3) fromdual; Results:1.2352. Keep two decimal places, onlySelectTrunc1.2345,2) fromdual; Results:1.23SelectTrunc1.2399,2)

With the SPA, you can play specific types of changes depending on the type of change (such as initialization of change, optimizer statistics refresh, and database upgrade)SQL or the entire SQL payload, and then generate a comparison report that

Oracle Easy Interface ToolBackground: I work on a remote machine, I need to call the Oracle 11gserver data, the remote machine has the Oracle client installed, but the SQL Plus and SQL developer and PL SQL developer are not available (DBA toss for a

The cause of the problem arises:Insert into T_cluster_showresult (outhostname,domainlist,iplist,classify) VALUES ("2014512-7", "www.renren.com\ Twww.baidu.com "," 192.168.2.1 "," 2 ")The execution of this statement is unsuccessful, the error column

8.2 Opening a Standby Database for Read-Only or Read/Write Access8.2 When a standby database is open for read-only access, users can query the standby database but cannot update it. thus, you can reduce the load on the primary database by using the

The following article describes how to bind a variable to an Oracle SQL statement and how to use Oracle to execute an SQL statement to bind a variable, the following describes the relevant content of the article. 1. SQL * PLUS command for receiving

Oracle learning-dmp file (table) Import and ExportPreface We still use a lot of dmp files, which are used as the file format for oracle Import and Export tables. Today we will learn how to export and import dmp files. Dmp File Export There are

There are many ways to connect to the Oracle database. The following describes how to connect to the Oracle database through the OCI8 interface. It is helpful for you to learn how to connect to the Oracle database. If you have the PL/SQL program,

Rman backup time: ORA-02396: exceededmaximumidletime Rman backup times: ORA-02396: exceeded maximum idle time Reference Original:RMAN backup faling with ORA-02396: exceeded maximum idle time, please connect again (Doc ID 1446182.1) Applicable:Oracle

Today encountered an error prompt: ORA-06502: PL/SQL: numberic or value error: character string buffer too small, the general corresponding Chinese information is: ORA-06502: PL/SQL: incorrect number or value: the string buffer is too small. During

Using UltraEdit to quickly analyze the number of records in an Oracle table sometimes you need to view the number of records in a batch of tables in the Oracle database, such as data conversion and data verification scenarios. Method 1: Perform