Oracle

  Oracle MapViewer runs as a JavaEE application in the JavaEE container. There are multiple ways to install and deploy Oracle MapViewer In The Complete Oracle Fusion middleware environment or an independent version of the Solaris. The deployment of

1. Obtain the values of 6th to 10th records in the table.1.1 Method 1: Use the minus statementAssume that the ddl statement is as follows:The following is a reference clip:Create table t (ID VARCHAR2 (4) primary key, value int)The first method is to

I believe many of my friends have encountered this problem. I searched for a large film on the Internet, but there are not many people replying to the post. Here I provide my solution, hoping to help you.I. Fault ReproductionFirst, connect to the

When Oracle starts, it needs to read the initialization parameter fileText File Format: PFILE$ ORACLE_HOME/dbs directoryCreate PFILEDBCAManually createdCp init. ora $ ORACLE_HOME/dbs/initSID. oraModify initSID. oraAfter dbca creates a database,

1. consistent exportWhen writing data from the database to the exported file, the Export reads a table at a time. Therefore, although the Export starts at a specified time point, each table reads at a different time point. When the Export starts to

Scenario: When marine encounters A problem, it is required to move A user's table from tablespace A to tablespace B. The number of user tables is more than 1000.Analysis 1: it can be determined that the DDL statement alter table table_name remove

1. Waiting for monitoring casesSelect event, sum (decode (wait_Time, 0, 0, 1) "Prev ",Sum (decode (wait_Time, 0, 0) "Curr", count (*) "Tot"From v $ session_WaitGroup by event order by 4;2. rollback segment contentionSelect name, waits, gets,

In oracle databases, users and roles are closely related to database permissions. Correct understanding of user and role management is very important for database installation, this article mainly summarizes the user and role management operations

Searching for the data source in the background on the OAF page is more troublesome than in the Form, and it cannot be located as accurately as in the Form, but it can also find most of the content.This article describes how to use the diagnostic

After installing oracle yesterday, I first got an error. I didn't set the oracle environment variable. I re-installed it again. Now, there are several minor problems, first, garbled characters may occur in sqlplus, and sqlplus cannot use backspace

Select... The syntax of the For Update statement is the same as that of the select statement, but the for update [NOWAIT] clause is added after the select statement. This statement is used to lock specific rows (if a where clause exists, it is the

Common oracle function summary ******************** **************************************** **************************************** SQL Group Functions (num can be a column or expression )*(Null values are ignored, default between distinct and all

Solution: Open the oracle folder and search for the file "emd. properties". Right-click to open it in notepad. Remember: the path must be: E: \ oracle \ luo-PC_orcl \ sysman \ config \ emd. properties, rather than the directory E: \ oracle \ sysman

I have installed oracle on rhel5.4. The system language is English, so oracleEM has never been used before. I will check it in English. Recently, it has been used frequently and it is not convenient to use the bird language. As a result, the English

Summary:DDL is a type of operation that consumes a lot of resources. Do not use DDL statements during running. The temporary tables required by the application should be created before running. You do not have to create one in each stored procedure.

[Oracle]-[ROWNUM and Index]-Impact of indexes on ROWNUM Retrieval Select ename, salfrom empwhere rownum  Are they the same? The first SQL statement first finds the records with ROWNUM create table t as select * from dba_objects;create table t2 as

[Oracle] SQL * Loader detailed tutorial (2)-input sqlldr in command line parameters without any parameters, the simple description of all command line parameters and their default values are displayed. (You can also use this method to quickly query

Oracle Partition Table exchange principle oracle partition exchange operation is very fast, then what is the principle? Let's create an experiment: SQL> create table test (id number (3); the table has been created. SQL> insert into test values (1); 1

The use and management of Oracle partition tables use very large tables, such as demographic statistics tables. If a table is large, the query speed is reduced and the management difficulty is increased. In the event of disk damage, data in the

Common simple functions in oracle (ONE)In oracle, functions are divided into multiline functions and single-line functions. Single-line functions can be directly referenced in plsql blocks, but multiline functions can only be referenced in Embedded