Oracle

1. Choose "start"> "Settings"> "Control Panel"> "Administrative Tools"> "services" to stop all Oracle services. 2. Start-> Program -> Oracle-orahome81-> Oracle Installation products-> universal installer uninstalls all Oracle products, However, the

1. ORA-12541: TNS: No listener Cause: the listener is not started or damaged. If it is the former, use the commandNetStart oracleorahome10gtnslistener (the name may be different); if it is the latter, use the "net configuration assistant" tool

Many of my friends said that the membership mechanism cannot be implemented on Oracle, But unfortunately, This blog post aims to show these friends how to implement the membership mechanism on the Oracle database. In the previous blog, I

This section briefly introduces how to use ODBC to connect to the Oracle database, To be honest, use oracleclient, oledb, and ODBC to access the Oracle database, It is relatively simple. It is nothing more than a note that the database connection

Previous:Oracle DBA Study Notes-start and close DatabasesNext article: Oracle DBA Study Notes-log files (using logminer to analyze logs) 1Control File  Control File Information:The size of the control file is related to the settings when the

During development, you often need to write an SQL statement to insert information into the table. If the inserted data field is of the date type, you must convert the date type to the string type and insert it into the database using SQL statements.

(1)Select the most efficient table name sequence (valid only in the rule-based Optimizer ):The Oracle parser processes the table names in the from clause in the order from right to left.,The base table driving table written in the from clause will

I haven't been writing here for a long time. I 've been busy modifying System bugs and preparing for exams. I spent most of my time learning the project management knowledge. New technologies are also less researched and applied, and I don't know

Experience: Use deCODE/group by/order by/sign/sum to generate different statistics and reports. -- Calculate the value of Y in hkb_test1, which is 1, 3, and 5 X.Select * From hkb_test1;X Y---------A 1B 1A 3D 2E 4F 5A 5D 3D 6B 5C 4B 3

Basic syntax and example: 1. Exp: There are three main methods (full, user, table) 1. Full: EXP system/Manager Buffer = 64000 file = c: \ full. DMP full = y if you want to perform full export, you must have special permissions. 2. User Mode: EXP

Importing and exporting Oracle Data imp/exp is equivalent to restoring and backing up ORACLE data. The exp command can export data from the remote database server to the local DMP file, and the IMP command can import the DMP file from the local to

In some cases, the stored procedure in Oracle becomes invalid. A Red Cross is displayed in the upper left corner of the stored procedure icon in PL/SQL developer. For example, if the objects referenced in the stored procedure are invalid, dblink may

1. Ranking explanation:Restore: RestoreRecover: RecoveryBackup set: similar to tablespaceBackup slice: a data file can be used across multiple backup slices, but in a backup set2. Principles:A. When a file is restored, the file cannot be used by the

  (1) ORACLE Server Configuration: NOTE: If your Oracle is used as a server, your Oracle will start the listener service, corresponding to oracleorahome92tnslistener in the Windows Service, which is configured with IP + port + database, then

(From: http://space.itpub.net/12361284/viewspace-346) At the beginning of the year, I read the book deep dive written by eygle, and I felt a lot of GAINS.We can summarize the two topics SCN and checkpoint. CheckpointMany people complicate the

(1). PL/SQL is not case sensitive.(2). Character Type:CHAR: up to 32767 characters.(3). Fast format:BeginDeclareBeginExceptionEndEndNote: If you use the first bengin, you must use the second one, and vice versa.(4) annotation method:Single Row --

Original article: http://www.bootad.cn/post/185.html   As we all know, to connect to Oracle using PL/SQL, you need to install the Oracle client software. Have you ever wondered whether to directly connect to Oracle without installing the Oracle

Java EE 6 authoritative guide: Version 4th. BASICS (Oracle Java EE 6 documentation team members accurately explain the Java EE 6 platform)Basic InformationOriginal Title: the Java EE 6 Tutorial: basic concepts, Fourth EditionAuthor: (US) jendrock (E.

Today, the Report Group reported an error when reading the Blob field of Oracle using ADO in CB5, so I tried it. The error message is "unsupported data type ". I tried Delphi7 again. I think the BCB/Delphi ADO is encapsulated. Is there a problem

I just read the article about oracle efficient design. When it comes to Standard Quantum queries in oracle, the performance depends on associated queries, however, I know in SQL server that the performance of associated queries is better than that