oracle database 11g sql fundamentals

registry key, all the keys that contain Oracle.11. My Computer----high-level----environment variables, delete environment variables classpath and path for Oracle settings.12. Remove all Oracle-related groups and icons from the desktop, startup Group, and Programs menu.13. Delete all Oracle-related directories (if not

Oracle 11g installation causes the database to fail to automatically collect statistics, oracle11g Recently, it was found that some 11 GB databases could not automatically collect statistics. Some View query results are as follows: SQL> select client_name, status from dba_autotask_client where client_name = 'Auto optim

The computer is WIN10 64 bit, the database is Oracle 11g, log in today　　When displayed: Ora-01031:insufficient privileges, insufficient permissions.Referring to this method, my local Users and groups have ORA_DBA groups, and the group also has a system login user, and the database is also installed to use for a period

This article describes the process of installing Oracle 11g on RHEL 6.3. You can download RHEL from many image sites, such as Oracle 11g, note that the version 11.2.0.3 is used in this article. Currently, this version is not available for download only for paid accounts, if you need this version, you can contact me by

Tags: autotask sql_tuningProduction on a set of 11g database Alert.log error ora-16957:sql Analyze time limit interrupt.Querying MOS-related documents troubleshooting:ora-16957: "SQL Analyze time limit Interrupt" Errors (document ID 1275248.1)The ORA-16957 error is a internal error code used to indicate that

Tags: python oracle cx-oraclePreparation: 1, download the corresponding version of Oracle-instantclient (I here is 11.2.0.1.0)http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html2. Installation-ivh oracle-instantclient11.2-basic-11.2.0.1.0-1.x86_64.rpm3. Configure Environment variablesLD

Tags: Unlock index family repeat completely delete int nbsp Read letNot NULL non-null field +not null Unique only Primary key primary key (ensure data cannot be duplicated) FOREIGN key foreign key Check must Drop purge completely removed Cascade Delete: Delete A department, the staff in the department then delete the --->on delete cascade Empty: Transfer employees from the department to Null, delete Department --->on delete set null Cannot move: Delete the employee first, then delete the

Applies To:Oracle Database - Enterprise Edition - Version 10.2.0.5 and laterInformation in this document applies to any platform.CauseA hang is possible in earlier versions of RDBMS as a result of an unpublished bug fixed in the following versions: 12.1.0.1 (Base Release) 11.2.0.2 (Server Patch Set) 11.1.0.7 Patch 42 on Windows PlatformsDocument 9776608.8 Bug 9776608 - Hang from concurrent login to same account with a wrong passwordEven with

instance started.Total System Global Area 835104768 bytesFixed Size 2257840 bytesVariable Size 536874064 bytesDatabase Buffers 289406976 bytesRedo Buffers Copy hot-prepared data files to the original data file directory[[emailprotected] PROD]$ cp /home/oracle/bak/*.dbf ./ ——拷贝数据文件到以前的数据文件目录[[emailprotected] PROD]$ exitexit[emailprotected]> select open_mode from v$database;

Connection query: You can implement multiple table queries by using the Join operator. Connection is the main feature of relational database model, and it is also a sign that distinguishes it from other types of database management system.Common two link operators:1.join on2.union in the relational database management system, the relationship between the data

should now is able to test the forward and reverse lookups using the "nslookup" command. The output below shows the forward and reverse lookups of the SCAN address.# nslookup Rac-scan.localdomainserver:192.168.0.4address:192.168.0.4#53Name:rac-scan.localdomainaddress:192.168.0.121Name:rac-scan.localdomainaddress:192.168.0.122Name:rac-scan.localdomainAddress:192.168.0.123# nslookup 192.168.0.121server:192.168.0.4address:192.168.0.4#53121.0.168.192.in-addr.arpa name = Rac-scan.localdomain.# nsloo

Database Installation After Oracle cluster installation, the next is the most important database installation, the entire database installation is not very difficult, the user as an Oracle user login RAC1 master node, the extracted file installation. After the main node ins

1. installation environment: Fedora 10 (kernel version: 2.6.27.5-117. fc10.i686) Oracle Database 11g Release 2 (11.2.0.1.0) (Register and download the corresponding Linux x86 version on the Oracle website) 2. References: Oracle Database