Oracle

L Use If-then-else logic in SQL statements LL uses two methods: CASE expression: SQL99 syntax, similar to basic, cumbersome decode functions: Oracle's own syntax, Java-like, comparative introduction1Sql> SelectEname,job, Sal, CaseJob when 'President'

After the DG is set up, it is found that the repository does not accept logs from the main library.Executing in the main librarySelect dest_id,status,error from V$archive_dest where dest_id=3;Report: Ora-16057:dgid from server not in Data Guard

With the popularization and improvement of computer network application, Oracle database application in every field is changing rapidly, its performance is excellent, the operation is flexible and convenient, and it is one of the widely favored in

Environment Description:Database version: 11gR2Transparent Gateway version: 11gOperating system Windows server2008_64 bitOracle_home Directory: D:\app\Administrator\product\11.2.0\dbhome_1MS Database ip:192.168.199.245 database: bwonline default

Disable the user login password user Scott Current login password is invalid, note requires DBA users to operateSql>alter USER Scott PASSWORD EXPIRE;Description: After the above statement operation,when the Scott user logs back in, the

forOraclethe two-table Joint update scenario (withA,Btwo tables, toa.id=b.idAssociation, according toBrecord updates in the tableAthe corresponding fields in the table), typicallyUpdateinline views andMergetwo ways, the following examples are: To

The Selectkey element of the Ibatis sqlmap configuration file has a type attribute that allows you to specify pre or post representation before generation (pre) or the epigenetic (post).Oracle SettingsXML code insert id="insertproduct-oracle"

I.　　Orabbix description Orabbix is a Zabbix plug-in tool for monitoring Oracle database performance by installing the data collected on the client on the monitored server and passing it to the Zabbix server, which is then displayed through a

China's banking industry in the development process, has gradually accumulated a large number of customer data and operating data. How to use these data to discover valuable information is of general concern to China's banking industry today. The

1: Valid time range for smalldatetime on date range 1900/1/1~2079/6/6valid time range for datetime 1753/1/1~9999/ A/ to2: The accuracy of the smalldatetime is only accurate to the point, while the DateTime can be accurate to 3-bit milliseconds. 3:

Test storage binaries@Testpublic void Test () throws ioexception{InputStream in=new FileInputStream ("E:\\test.txt");Byte[] Tblob=new byte[in.available ()];In.read (TBLOB);In.close ();Session ses = hibernatesessionfactory.getsession

Http://www.cnblogs.com/LDaqiang/articles/1157998.html due to changes in demand, the field type number (8,2) is now changed to char.The general idea is as follows:Rename the field name of the type to back up, and then add a field with the same name

EXP is available under the Oracle installation directory . EXE with IMP. EXE for these 2 files, they were used to perform the import and export of the database. So Oracle data import and export imp/exp is comparable with Oracle data restore and

  The best way to master and use a tool is to master its principles first, understand its architecture, and then use it handy, or else use it, and don't know why this step does this, not to quickly locate the problem, let alone solve the problem

3.3. Pre-installation inspection 1. Check the connectivity of the nodes [Email protected] grid]$ /runcluvfy.sh stage-post hwos-n linuxrac1,linuxrac2-verbosePerforming post-checks for hardware and operating system

Environment: Windows Server 2003 Oracle 10g, Inter-system backupThe target system creates the shared file, and the original system mounts the shared directoryWrite batch script, call with scheduled taskRem*Because the system real-time requirements

In linux, oracle is configured with the system to start and shut down, and in linux, oracle is configured Configure oracle to start and shut down with the system in linux 1. Modify the/etc/oratab FileChange the number of databases that need to be

Migrate the oracle database from the 32-bit platform to the 64-bit The disk of the customer's 32-bit oracle database system is damaged. Fortunately, the oracle database is intact. The customer requested that the database be migrated to the newly

SQL advanced (1) -- regular functions, SQL -- Functions When we compare and process strings, the like clause may be used at most. % Represents one or more characters, and _ represents one character. However, when processing complex strings, we find

The OracleOraDb11g_home1TNSListener service is stopped after it is started. Some services are automatically stopped when they are not used by other services or programs.The solution is as follows:1: