Oracle

Oracle Database error ORACLE not available solution the following Error occurs when running commands such as exp, imp, or sqlplus: EXP-00056: ORACLE error 1034 encounteredORA-01034: ORACLE not availableORA-27101: shared memory realm does not

1. view the database Character Set Database Server Character Set select * from nls_database_parameters, which is derived from props $ and represents the character set of the database.Client Character Set environment select * from

This article introduces the usage of different subquery brackets in oracle for 9i and 10g and 11g. if you need this, refer to the following. There is such a view, probably as follows: This view can only be compiled successfully in 10g and 11g

This article introduces a ORA-27125: unable to create shared memory segment solution for oracle databases in linux. Platform environment: Linux Red Hat Enterprise Linux Server release 6.0 (Santiago) Database Version: Oracle Database 10g Enterprise

This is a problem encountered when logging on to oracle, ora-12154: tns: unable to resolve the specified connection identifier, let's look at the solution below. I plan to install oracle 10 GB on May 1. After the installation is complete, test

If you grant DBA permissions directly when creating A user, you can directly query user A's table in user B. However, when creating A view, no permissions are reported, in this case, you need to authorize user B to access the table in user. When

This article to introduce to you about Oracle Database Error prompt: Ora-01791 is not the Selected expression solution, there is a need to know friends can enter the reference. Today, I encountered an error while investigating the original code,

Content Software Environment Oracle SCOTT user Select the nth value from the table Select the nth small value from the table  Software Environment Windows Server 2008 R2 Oracle 11g Release 1 (11.1)  Oracle SCOTT user This

I. SQL tuning class 1: List several table Connection MethodsHash join/merge join/nest loop (cluster join)/index join 2: How to view SQL Execution plans without using third-party toolsSet autot onExplain plan set statement_id = & item_id for &

Check the awr report and record the index failure caused by implicit conversion. In awr, statements consume more than 40 million logical reads. Variables are tested quickly. SQL a.order_prod_amount, b.prod_cost_price user_sess a, PR_DO_T b a.prod_

An alarm is reported in the RMAN backup log. The log file directory is as follows: [Root @ erpdbs rmanback] # llTotal 88-Rw-r -- 1 oraprod dba 81011 Sep 7 rmanback. log-Rwxr -- r -- 1 oraprod dba 2581 Jun 24 2011 rmanback. sh[Root @ erpdbs rmanback]

Oracle metric index usageOracle provides a monitoring index method to determine whether an index is used. If indexes are not used, you can delete them to reduce unnecessary statement overhead. Because a large number of unnecessary indexes on a table

The following is a detailed analysis of the use of Switchover and Failover in Oracle. For more information, see Role Switching between Data Guard master and slave databases is divided into the following two types:1) SwitchoverSwithchover is

Install Fedora2 2. Download Oralce10G (www.OracleFor general installation, only ship.db.cpio.gz needs to be downloaded. 3. Unlock [Oracle @ oar10g oracle] $ cd/tmp [Oracle @ oar10g oracle] $ gzip-cd ship.db.cpio.gz | cpio-idmv 4. Modify Linux system

Oracle Database Export and re-import 1. Export Database? 1 2 3 4 5 6 1. Completely export the database TEST, username scott password tiger, and export it to D: testDB. in dmp: [plain] exp scott/tiger @ TEST file = d: testDB. dmp full

In Oracle, multiple databases can be configured, and only one listener can be enabled. for multiple databases, you only need to configure the corresponding service name to connect. I use Oracle 8.1.7 Enterprise Edition and the OS is a Windows 2000

There are many application projects. At the beginning, MySQL Databases can basically meet various functional requirements. As the number of application users increases and the amount of data increases, MySQL gradually becomes overwhelmed: the

In the process of diagnosing database system performance, SQL statements with low tracking efficiency are always involved. Oracle Database 10 Gb contains a new utility trcsess, it allows you to selectively extract trace data from a large number of

The tutorial of helping customer House (www.bkjia.com) uses ORACLE stored procedure and JOB to realize automatic backup of data tables. 1. Create a stored procedure Create or replace procedure data_auto_backupV_tablename varchar2 (200 );V_year

I. Hardware requirements 1. Memory & swap Minimum: 1 GB of RAMRecommended: 2 GB of RAM or more Check memory # grep MemTotal/proc/meminfo # grep SwapTotal/proc/meminfo 2. Hard Disk Since CentOS is installed almost 4 ~ 5 GB, plus Oracle and so on, so