Oracle

A large number of zombie processes have been eliminated in the previous article, but this approach can only be palliative and not permanent. In addition to the large number of Racgmain check processes seen in the operating system, some Racgimon

Oracle database instance startup, strictly should be the start of the instance, the database is only loaded after the instance is started. The Oracle data startup process is divided into Several different steps, in the different boot process, we

1. ASCII Returns the decimal number corresponding to the specified character; Sql> Select ASCII (a) a,ascii (a) a,ascii (0) Zero,ascii () space from dual; A A ZERO space --------- --------- --------- --------- 65 97 48 32 2. CHR gives the

The Oracle tutorial being looked at is: analysis and resolution of Oracle common error codes three. -------------------------------------------------------------------------------- P align= "Justify" >ora-00600:internal error code,arguments:[num],

The Oracle tutorial you are looking at is: Oracle functions. Pl/sql single-line functions and Group functions A function is a program that has 0 or more parameters and has a return value. In SQL, Oracle builds a series of functions that can be

No way, only their own research, after about a day, or do a good job, write a summary. There are probably several solutions for this problem: 1. Insufficient permissions, resulting in pop-up empty bar prompt box. (directly on the link) Http://

(1) DES encryption function Create or Replace function encrypt_des (p_text varchar2, P_key varchar2) return varchar2 is v_text varchar2 (4000) ; V_ENC varchar2 (4000); Raw_input RAW (128); Key_input RAW (128); Decrypted_raw Raw (2048); Begin

Reading notes db file scattered read DB, db file sequential read Db,free buffer waits,log buffer space,log file Switch,log file sync We can view the current waiting events in the system and the information about the resources corresponding to the

The federated Array was formerly called the Pl/sql table. Federated arrays cannot be used in tables and can only be used as a structural body for programming. Federated arrays can only be accessed in Pl/sql. It is important to note that some of the

The recommended use of OTK scripts to install Oracle is a great boost to the success factor of installing Oracle. Description Oratoolkit is the Swiss Army knife for Oracle. Standards and designed tools help DBA ' s mastering Oracle 10g/11g

The Sybase replication server (Sybase Replication server), in addition to replicating data with the Sybase system, is used to replicate heterogeneous databases, including Oracle, MS SQL Server, DB2, Ianywhere, and so on. and become the foundation of

When you are maintaining Oracle, you can use some Unix operating system commands to view system-related information under various operating systems. Memory ------- Aix:bootinfo-r LSATTR-E-LMEM0 /USR/SBIN/LSATTR-E-L sys0-a Realmem Or use a tool

I've often seen people ask this question, I've set up multiple indexes on the same table, why does Oracle choose one at a time and not use multiple indexes at the same time? Generally speaking, the common access to the same table more than two

1. Use BULK Insert first think of the following insert statementInsert into a (id,name) values (', '), (', '), but Oracle does not support this notationThen the query learns that you can use the following notationInsert Allinto a (id,name) values (",

One, Oracle trace fileThere are three types of Oracle trace files, a background alarm log file that records the activity of the background process during startup, shutdown, and operation of the database, such as tablespace creation, rollback segment

Because of Oracle licensing issues, MAVEN does not provide Oracle JDBC driver, which must be manually added to the local warehouse in order to apply the Oracle JDBC driver in the MAVEN project.I. Obtaining the Oracle JDBC Driver1. Download the

Idea: You can remotely query the table of an Oracle database by adding a linked server to the SQL Server databaseEnvironment preparation, install the SQL Server database, install the Oracle driver, configure the Oracle connection in the configured

statement: recently in the OpenStack of the Kilo version of the installation, found that there are very few existing web tutorials, and most of the tutorials can not be installed successfully, so write this tutorial. The installation of OpenStack

The last book, "Oracle 10g installation in Solaris 10," and now start using QT to compile the Oracle 10g driver! This allows the QT program to be linked to the Oracle database!Environment Variables for Oracle: Oracle_base=/oracleOracle_home=

Oracle Video Tutorial Goals      Oracle Video tutorial, wind Brother this set of Oracle Tutorial Training learning the role of Oracle database undo and related data dictionary, undo Automatic Management, DDL and DML operations and undo relationship,