Oracle

 When the virtual machine can connect to the machine, but found remote or not able to connect, this time to join the rules at the firewall, the way to join is:A: in Root LoginB: enter on the terminal Setup , configure the firewall. For example,

Main functions: Uppercase and lowercase conversion functions Get substring function (string intercept) Get string length function String Join function Remove substring function Character substitution functions First,

Connect by is used in structured queries, and its basic syntax is:Select ... from tablename start with condition 1Connect by Condition 2Where Condition 3; Cases:SELECT * FROM tableStart with org_id = ' hbhqfwgwpy 'Connect by prior org_id = parent_id;

Oracle RAC Listener configuration is the same as the single-instance configuration11g after installing the RAC process, do not need to execute NETCA to manually create the monitoring, when installing the cluster software, will automatically create a

"Oracle's Lock"What you have to know in the database:1, business is the core of the database, they are good things2, should be deferred to the appropriate time before submission. Do not submit too quickly to avoid stress on the system because, even

Http://www.sqlpanda.com/2013/07/learning-note-sql-server-vs.htmlThis is my Learning note base on the "SQL Server Essentials for Oracle DBAs jump Start".DATA Block/extend and

1. Numerical functionsfunction return value sample displayCeil (n) the smallest integer greater than or equal to the value N, SELECT ceil (10.6) from TABLE_NAME; 11Floor (n) the largest integer less than or equal to the value N, SELECT floor (10.6)

1. Query all ColumnsSELECT * from table name;2. Query table structureDESC table name;3. Query the specified columnSelect Ename,sal,job from table name;4. View all tables and fields in RacleGet table:Select table_name from User_tables; The current

No matter what version of Oracle you install, you need to configure the/etc/pam.d/login/etc/profile/etc/security/limits.conf three files before installingSo what exactly are these three files for? The answer is to set the shell limits for the Oracle

Main documents:http://www.itpub.net/thread-1714191-1-1.htmlOraclehThere are two types of server modesShared modeand theDedicated mode. Dedicated modethe next. Each client sends a connection request. The database is required to create a service

1, Oracle special character escapes keyword:oracle    escape                                              Environment: Oracle9i plsql Execute inside Plsql: Update userinfo set pageurl= ' myjsp?page=1&pagesize=10 ' where id= ' test ' This SQL

Starting today with Oracle's powerful database, it has not yet experienced its powerful capabilities. Before I heard that the Oracle installation is very complex, and I just really installed a time later only to know, in fact, the default can be, of

1. TRIM ([{{leading | TRAILING | BOTH}[Trim_character]| Trim_character} from]trim_source) functionReference: Leading assuming that the leading parameter is specified, the Oracle database will remove the opening character regardless of what is equal

Connect to an Oracle database using PL/SQL and export the data for backup and import recoveryThis operation Baidu a search a large, today to organize the project of the past to backup a bit of the database, try to export the data for backup and

In Oracle 11g R1, Oracle introduces some nice enhancements in the form of invisible indexes and virtual fields. Inheriting the former and carrying forward, Oracle 12c introduces the idea of invisible fields. In previous releases, in order to hide

Original link: http://tech.it168.com/a2012/0814/1384/000001384756_all.shtmlDifferent cluster products have their own characteristics, RAC features include the following points:• Dual-machine parallel. RAC is a parallel mode, not a traditional master

The previous article said that the operation of SQL Server version, because now the company needs to use Oracle data, not before, through the online check to add some of their own actual verification affixed, mainly to facilitate their own view of

The simple way to connect a remote database via PL/SQL is to install the Oracle client, and one way is to not install the client, but you need to create the necessary configuration files yourself, the following is a simple record of the process of

On Linux. Oracle 10g/11g x64bit Environment, goldengate Self-initiated script with OS bootBackground descriptive narrative:Goldengate installed in the/u01/ggs folderrhel5.5 Oracle 10g/11g X64bitOracle GoldenGate Command interpreter for oracleversion

Use ASM to deploy large databases (10TB to PB Range)References:Deployment of very large databases (10TB to PB Range) with Automatic Storage Management (ASM) (Doc ID 368055.1)Range:This article applies to ASM configurations on all platforms. Contains