what is oracle essbase

What is the maximum length supported by the Oracle database table name? This article describes the maximum length that can be used by a table name in the Oralce database. The length is also the maximum length of the Oracle identifier, which

Label:What is the acronym for Oracle's TNS?Transparent Network substrate (transparent net bottom, that is, regardless of the underlying network layer with what protocol for the upper layer of application is transparent, that is,The application layer on the upper level does n

HACMP can be said to be a server engineer, and there is no unknown-IBM's housekeeping architecture. I have recently asked readers to talk about the issue of HACMP by phone or email. Here, I will repost an article from IBM, which is very well written and accurate. It is a lot better than what I said. Everyone will benef

[Oracle] undo corruption without backup. What should I do if undo corruption is unfortunately encountered in Oracle running? Of course, the best way is to recover completely, but if there is no backup, you can use an unconventiona

. CREATEORREPLACEproceduream(msg1varchar2,msg2varchar2)as begin dbms_output.put_line(msg1||msg2); end; / After compilation, the following is an example. SQL>setserveroutputon SQL>execam('HereIam',46); HereIam46 PL/SQLproceduresuccessfullycompleted. Well, this output may look better (note that there are no spaces in the output msg1 and msg2 ). At this point, we must format one or all two message inputs to make the o

I started this question because a friend on MSN asked me today,What is DSI?.This is the first question. DSI isData Server InternalsIt is an internal teaching material used by Oracle to train Oracle aftersales engineers.Such docum

This is a recovery that is performed by the system. No human management and operation is required. This method is generally used when the system fails due to sudden power failure. Automatic recovery occurs when the database is started again. Unlike a simple DOS system, the

[Translated from mos] What is the difference between basic table compression and advanced compression in oracle databases?Differences between basic table compression and advanced compression,Extracted from the mos Article Difference Between Basic Table Compression And Advanced Compression (Doc ID 1548187.1)Applicable:Oracle Database-Enterprise Edition-Version 10.

1. B-tree IndexThe most common index type in an Oracle database is the B-tree index, the B-tree index, named after its scientific structure with the same name. CREATEWhen the index statement is created, the default is to create the B-tree index. No special provisions can be used in any situation.2. Bitmap indexing (bit

title is changed to ctime. According to the OS process number, you should be able to find out what SQL statement it is executing.-- Query the SID number of the Oracle OS process:Select SES. Sid from V $ session SES, V $ process pro where pro. spid = spid and SES. paddr = pro. ADDR;-- Query the SQL statement that the

a common parent project. This makes it possible to build all of the child projects as long as the parent project is built. The Pom of the subproject inherits the parent project's POM. In addition, all POM has inherited a super-pom. Super-pom set some default values, such as the default directory structure mentioned in the first article, the default plug-ins, and so on, which follow the rules of Convention over configuration. So while our POM

Sqlserver does not support set difference and intersection operations. I recently developed a database based on sqlserver2000.Program. There is a part of the computation that requires a large number of aggregate queries. I found a query operation statement through the data. Except The syntax structure is: (Sql1)Except(Sql2) However, no matter how I execute it, an error occurs: There

The Sql*plus user name in Oracle is the system user, and the password is the password you set.If the password is forgotten, it can be reset by the following method.1, Win key +r key, enter cmd, open command prompt.2. Input Sqlplus/nolog3. Continue entering Conn/as SYSDBA4. Enter the ALTER user name identified by passwo

What is the difference between number and BINARY_DOUBLE in oracle?The main advantage is: it is more efficient than number, faster, and takes less space, but the version compatibility is poor.Numeric numeric typeNUMBER: this

--The query field in what tableSelect * from where t.column_name='ABC';--Query What table the field is in and determine if it is a primary keySelect * fromAll_tab_cols T Left Join ( SelectA.table_name, A.constraint_name, A.column_name, B.constraint_type--field Constraint type (P: primary key)

Tags: archiveOur Oracle database defaults to non-archive mode, and if there are three redo log groups, when all three log groups are fully filled, the first log group will start looping, and the contents of the first log group will be completely overwritten, so if the database crashes and you want to recover the data that was earlier, That's a pit.What to do?You ask me, I tell you. Switching the database log mode to archive mode

---------------------------------------------------------------------------------------- + |Id|Operation|Name|Rows|Bytes|Cost (%CPU)|Time| A ---------------------------------------------------------------------------------------- the | 0 | SELECTSTATEMENT| | 1 | 207 | 2(0)| xx:xx: on | + | 1 | TABLEACCESS by INDEXROWID|ECHO| 1 | 207 | 2(0)| xx:xx: on | - |* 2 | INDEXRANGE SCAN|Echo_ind| 1 | | 1(0)| xx:xx: on | $ -------------------------

Tags: select process another business PST TPS definition VPS RelatedA trigger (trigger) is a special stored procedure whose execution is not invoked by the program or manually, but is triggered by an event, such as when an operation on a table (Insert,delete, update) activates it for execution. Triggers are often used to enforce data integrity constraints, busine

In oracle, what happens when a value in date time format is inserted into a field in varchar2 format ?, Oraclevarchar2 -- Create Table test1 Create table TEST1(ID VARCHAR2 (40) default sys_guid (),TDATE VARCHAR2 (200))Tablespace APP_TX_DATAPctfree 10Pctused 40Initrans 1Maxtrans 255Storage(Initial 64 KMinextents 1Maxextents unlimited); -- Insert date time format

What is Java?Java is both a programming language and a platform.　　Java programming languageJava is a high-level programming language with the following characteristics:SimpleObject orientedcan be distributedCan explainStrongSecurityStructure ofLightPowerful featuresMultithreadingDynamicJava can be either compiled or in