Oracle

  Queries SQL statements and forms a hyperlink for the second column Select id, concat ('', FILENAME ), ''), RANDOMFILENAME, FILESIZE "+" FROM T_FILEINFO   Oracle concat functions can connect only two strings at a time Select id, account,

When you use win7 to install oracle10g, it is likely that the related oraparam is displayed. if you are unable to install oracle10g due to an ini-related exception, follow these steps. 1. First, find and open the "\ oracle 10g \ stage \ prereq \ db \

· Physical Structure of the Oracle database:The storage structure of the Oracle database includes the physical storage structure and logical storage structure of data. The physical storage structure is the actual data storage unit, and the logical

Today, I encountered a multi-instance Listener Configuration problem. The database is Oracle 11G R2 for Windows.The database has two instances: orcl and orclsj.To implement a single listener for multiple instances, the instance listening port is

Page BasicsOn the browser layer, OAF pages are standard HTML pages, just like other pages.In the middle layer, the OAF page is actually implemented by the an structure in the memory, which is the same as the traditional JAVA client interface. The

1. List all departments with at least one employee.FirstSelect dname from deptWhere exists (Select * from emp where emp. deptno = dept. deptno);SecondSelect dname from dept where deptno in (select deptno from emp ); ThirdSelect dnameFrom deptWhere

A temporary table needs to be created in the project to temporarily store the data of a table. We know that it can be implemented using subqueries. The syntax is simple: View plaincopy to clipboardprint? Create global temporary table temp1 as select

[Oracle] parameter modification summary Oracle parameter modification is complicated. Some parameters can be modified at the session level, and some must be modified at the system level, some parameters take effect immediately after modification (no

How to copy the data files in ASM to the operating system environment: Red Hat 5.7 + Oracle 10.2.0.5.0 Rac + ASM if your Oracle database system uses ASM for Automatic Storage Management, you have ever wondered how to peat the data files in ASM. ASM

Add, delete, modify, and create an instance with parameters in the three layers of oracle // Add using System. Runtime. Serialization; namespace WZ. EMR. Model {/// // The object class DATA_SET. (Attribute description: automatically extract the

Tip ORA-03113: The end of the communication channel file to Solve the Problem reason: oracle installed to win7, thought it is a direct sqlplus/as sysdba, use the database, but the recent connection frequently reported error, prompt ORA-03113:

LGWR: Failed to archive log X thread 1 sequence 151016 (16086) solves the error of 16086 when changing the redo size of the master database. The error message is as follows: LGWR: failed to archive log 4 thread 1 sequence 151016 (16086) when the

Oracle Database flash back oracle uses 10 Gb. When operating the database a few days ago, it was suddenly found that every time a table is deleted, a system generated table will be generated, the table is just deleted, but the table name is changed

The following error is reported when the oracle listener is started: the information provided for this listener is currently in use by other software on this computer, and the listener cannot be started. Even if it is started, it cannot register the

Installing RAC encountered ClusterwarePRCT-1302: the OCR has an inva... first introduces the usage of the oifcfg-Oracle Interface Configuration tool. Usage: oifcfg iflist [-p [-n] oifcfg setif {-node |-global }{/: }... oifcfg getif [-node |-global]

When iptables is enabled in 11gR2 RAC, node downtime is usually handled. When installing a database, the vast majority of users require selinux and iptables to be disabled before installation. However, in the carrier's system, many security factors

ORACLE Data Buffer DB cache db cache is a buffer organized by data blocks. When the database was just started, there was almost no user data buffer in the db cache, when a session accesses a table or index in the database, it first checks whether

Back up data files on bare devices 1. using dd is the fastest method to accomplis h this. however, it isnecessary to know how many blocks to skip in the raw device (e.g ., on Tru64 uni x you must skip 64 KB) so that y ou do not overwriteinform ation

[Oracle] Data Guard series (2)-log TransmissionFrom a macro perspective, Oracle Data Guard provides the following two services: 1) log transmission: the master database transfers the generated Redo logs to the slave database; 2) log application:

Change of execution plan before and after index creation and comparison environment of soft and hardware resolution: OEL + Oracle 10.2.0.5 Rac answered a netizen's question on itpub today. RT: After I first executed an SQL statement, this SQL