Oracle

Oracle RAC is not supported for one node is rhel5.x and the other node is rhel6.xBecause rhel5.x and Rhel 6.x are seen by Oracle as "different operating system versions"The Oracle Solution SR engineers gave the following reply in full:There shouldn '

Use Windows Console (program | run, enter CMD to open). Under command line, enter Sqlplus/nolog, carriage return, the sql> command prompt appears, and then enter the command in the following order:Sql>conn/as SYSDBASql>alter user Scott account

Assuming Oracle has an entirely new database ORCL, now it's time to import the database file (. dmp) into this new database ORCL. The detailed steps are as follows: 1. Create a table spaceFor example:Create tablespace Test (tablespace name) datafile

Grammar:CREATE TABLE Table name (Column name 1, column Name 2, ...)Organization External # # #说明创建外部表(Type access Types # # #一般是 Oracle_loader, Oracle_datapumpDefault directory path name # # # #指定默认目录对象Access parameter (# # #数据源文件与表中行之间的映射关系Records

Import and export of Oracle databasesFirst, it was embarrassing again.In fact, there are two types of Oracle import and Export commandsThatEXP (EXPDP) imp (IMPDP)First of all, to popularize common sense:In the normal storage and database migration,

# Listener.ora Network Configuration file:d:\oracle\product\10.1.0\db_1\network\admin\listener.ora# Generated by Oracle configuration Tools. Sid_list_listener = (sid_list = ( Sid_desc = (sid_name = Plsextproc) (oracle_home =

Object Types for Oracle Object TypeIn PL/SQL, object-oriented programmers are based on object types. The object type is a user-defined composite data type that encapsulates the data structure and the procedures and functions used to manipulate those

In the same LAN, the client can not access the remote server, and after the personal summary of the online data, the following settings are required(1) The exception must be set on the Oracle server servers:Control Panel->windows Firewall, advanced

DB version: Oracle database 11g Enterprise Edition release 11.2.0.2.0- 64bitORACLE11G adds new features for virtual columns, as described below:1> can only create virtual columns on the heap organization table (normal table), cannot create virtual

NVL2 (EXP1,EXP2,EXP3)    null function detection expression EXP1,EXP1 not empty value is Exp2, empty is exp3nvl2 (expression, not null set value, null value)   Decimal to percent select  to_char (Round (0.1*100,3), ' 990.99 ')  | |   '% '  from dual

Cause of the problem:Plsql developer cannot connect to 64-bit Oracle server because Plsql is 32-bit, there is no 64-bit version, and Oracle is 64-bit incompatible.Configuration method:1, download 64-bit Oracle, extract two files, unzip the

to modify the Oracle 10g RAC Listener Port number 1523OneModify the Listener.ora to change the 1521 to 1523. Make a backup of the file in advance for quick recoveryTwoModify the Tnsnames.ora, change the remote_listener corresponding value in the

One, the Oracle installation process is slightlyII. SYS user and system user(1) SYS user is superuser, has the highest privilege, has SYSDBA role, has CREATE DATABASE permissionThe default password is Change_oninstall(2) The system user is the

1. IntroductionThere are many backup methods for Oracle databases, regardless of the backup method used, to restore the system at the lowest possible time and cost in the event of a failure. For example, exporting database objects using the Export

---------------------------------------------cursor Application-instance------------------------------------------------------------- ----DeclareType Curt_type is ref cursor;--Declaration ref type CursorType nticketinfoid is table of

About spool(spool is Sqlplus's command, not something in SQL syntax. )For SQL spool data, it is best to define your own format to facilitate direct import of the program, SQL statements such as:select Taskindex | | | | | Commonindex | | |

SelectDepartment_name,city,Count(*) fromDepartments D, employees E, Locations Lwheree.department_id=d.department_id andl.location_id=d.location_id andE.salary> +Group byDepartment_name,city having Count(*)> 2; SelectFirst_Name||' '||last_name

New CDB and PDB introduced in the ORACLE12C versionThe user created after default login to CDB must be a global user in C # #开头If you want to access a table in a CDB, you can use the grant command to assign the rightBut the above empowerment does

Environment descriptionOperating system: redhat6.4 64-bitOracle version: 11.2.0.4 RAC (two node)Disk array: Macro bin 3300eProblem descriptionWhen implementing a RAC cluster years ago, there is only one set of paths in the operating system where the

Http: // localhost: 8080/displays the description of Oracle, localhostoracle Enter http: // localhost: 8080 to display the tomcat homepage. After checking, environment variables in jdk, tomcat, and oracle are set correctly. However, after