what oracle db

The retention policy for the recovery directory is configured, and then the recovery directory is backed up. 1 Set up the environment for the ORCL database. [Oracle@rtest ~]$ Export oracle_sid=test0924 2 starts RMAN and uses the recovery directory

Oracle Database 11.2.0.2 has been available for Linux for a while.  It is also today available for Windows (32-bit and 64-bit).  You are need access to me Oracle Support to get this upgrade/patch. 11.2.0.2 allows for new installations (a departure

The processor changed from 32 bits to 64 bits, and after the Oracle software was replaced, the db I chose to migrate the cold standby direct hook, and then the problem was encountered after the migration. After a successful mount of DB, errors such

1, first check whether DG Space is sufficientSql> select Name,total_mb,free_mb,usable_file_mb from V$asm_diskgroup;NAME TOTAL_MB FREE_MB USABLE_FILE_MB--------------------------------- ---------- ---------- --------------DATADG 4198790 230531

Syntax and introduction of SELECT statement in Oracle databaseSELECT [All | DISTINCT] From ,[, ...][WHERE [GROUP BY [having[ORDER by [ASC | DESC]]Statement Description:[] square brackets are optional[GROUP BY [havingRefers to grouping results by

? List the purpose of creating a replica database? Select a method for replicating a database? Copy a database using Rman? Copy a database using Rman backup? Replicate a database based on a running instance Using the replica database ?

Using the Support Workbench Using the Enterprise Manager Support Workbench with the Support Workbench, you can investigate, report, and (some cases) to resolve the issue:1. On the Database home page of Enterprise Manager, review critical Error

? Group functions: – Type and syntax – Use AVG, SUM, MIN, MAX, count– to use the DISTINCT keyword in group functions – Null values in group functions What is a group function The group function evaluates the rowset and provides a

Oracle DB 12c new feature: Raw device is no longer supported.Reference from:Announcement of De-support of using RAW devices in Oracle Database Version 12.1 (Doc ID 578455.1)Details:De-support of RawThe directory for this article is a notification

The links between databases are established on the database link. To create a DB link, you must first set the link string on each database server. 1. Configure TNS, $ ORACLE_HOME/Network/admin/tnsname. ora 10 gstandby = (Description = (Address =

Create a Data Group All group functions treat the table as a large information group. However, you sometimes need to divide the table into several smaller groups. You can use the group by clause to complete this task. Create a Data GROUP: group

Source database:Computer Name: bkjiaDatabase Name: orcl Target database:Computer Name: suzhouDatabase Name: ocp 0. Create a test table for the target databaseSQL> conn scott/passwordConnected.SQL> show user;The USER is SCOTT"SQL> create table t12 (3

Create a data groupAll group functions treat a table as a large group of information. However, it is sometimes necessary to divide this information table into smaller groups. You can accomplish this task by using the GROUP BY clause. Create a Data

Transfer from http://www.cnblogs.com/advocate/archive/2010/08/20/1804066.htmlDeepen your understandingThe database is a photographic film.Example is photo paperA film can be used to punch multiple photographic papers, but a photo paper is a maximum

1, has been started/not loaded (Nomount). Launches the instance, but does not mount the database.This mode is used to recreate the control file, restore the control file, or recreate the database.2, Loaded (Mount). Mount the database without opening

One. DB file Parallel Write wait eventQuote from the following blog:Http://oradbpedia.com/wiki/Wait_Events_-_db_file_parallel_writeDB file Parallel writeThe db file parallel write wait event belongs to the Oracle database writer (DBWR) process

Overview: In an Oracle database, partitioning (partitioning) allows very large tables (table) or indexes (index) to be decomposed into small manageable blocks (pieces). These blocks are called partitions (partitions). Each partition must have the

Bug 9772171-database startup hangs on Windows if machine have more than cores [ID 9772171.8]This article has been explained: fix (fix) the bug in 11.2.0.2.The 11GR2 version is now available in 11.2.0.4, and 11.2.0.4 is the final 11GR2 version. So we

? Perform a full recovery after losing critical or non-critical data files? Restore with incremental update backup? Switch to image copy for quick recovery? Restore the database to a new host? Using Backup control files for recovery Using

Temp table ? Will the stored data be purged automatically at the end of the session or transaction processing? Provide a dedicated data store for each session? Available for all sessions, without affecting the private data for each session if