oracle 11g sql certification

Databases are mainly used to partition different types of databases. In actual applications, most Oracle databases use the Partition Function to improve query performance. The Oracle 11g partition function can simplify the daily management and maintenance of databases, this greatly reduces the workload of DBAs (Database Design and Management Engineers. The new fe

archival Enabled Archive Destination/Home/Oracle/App/Oracle/Product/11.2.0/Dbhome_1/Dbs/Arch Oldest onlineLogSequenceWuyi Next LogSequence toArchive - Current LogSequence - If the user wants to modify the storage path of the archive log, the following command can be executed Alter set log_archive_dest=' user desired path, but requires Oracle program to read and

been started C:\users\10188535.zte>sqlplus/nolog Sql*plus:release 11.2.0.1.0 Production on Monday September 14 09:43:14 2015 Copyright (c) 1982, Oracle. All rights reserved. sql> conn/as sysdba is connected. Sql> Startup ORA-01081: Unable to start ORACLE that is already ru

), this function is similar to the function of querying read-only standby databases when redo logs are being applied in real time. It provides an optional solution for the read-only data warehouse to use basic replication. But there is an important exception: There is no way to deal with any significant delay in redo logs on the physical standby database. Oracle 11gR2 provides a new session-level parameter STANDBY_MAX_DATA_DELAY, which specifies an a

Routine maintenance and troubleshooting of Oracle 11G R2 slave uard 1. for the Forced Logging mode, there are some DDL statements that can avoid writing redo logs by specifying the NOLOGGING clause (the purpose is to increase the speed, which is indeed effective in some cases). After specifying the database as the force logging mode, the database records all operations except the temporary tablespace or tem

The Oracle Data guard logical standby database uses a backup of the master database to first create a physical standby database and then convert it to a logical standby database. After that, the master database transmits the logs to the slave database. The slave database uses logminer to parse the SQL statements executed by the master database from the logs of the master database and re-execute them on the

After installing the OEM grid control 11g, reinstall the agent on a monitoring server and the agent will not be able to work. The error "EMD upload error: uploadXMLFiles skipped" will be reported during the emctl upload check ". As follows: [Oracle @ codb2 ~] $ Emctl upload Oracle Enterprise Manager 11g Release 1 Grid

Dg_broker_start NAME TYPE VALUE ------------------------------------------ ----------------------------------- Dg_broker_start boolean FALSE sql> alter system set DG_ Broker_start = true; System altered. Sql> Show parameter Dg_broker_start NAME TYPE VALUE -------------------------------------- -------

Tags: replace alt offline routines personal Oracle Ogre Knowledge UserSource: http://blog.csdn.net/liverliu/article/details/6410287 First: The cause of the problem, I previously in the f:/llh/directory created a bookspace table space, and later do not want this table space, so I deleted directly, this error is because I will f:/llh/bookspace.dbf and so on a few files deleted after the appearance.Second, the phenomenon:

Prior to 11.1, many people might have known that Oracle database history passwords could be restored through alter user identified by values password, but several problems occurred in 11g:1. Dba_users no password record (null value), this problem can be directly queried User$.password still have recordsSql> Select password from dba_users where username= ' SYS ';PASSWORD------------------------------

, Oracle. All rights reserved.Connect:Oracle Database 11g Enterprise Edition Release 11.1.0.6.0-64bit ProductionWith the Partitioning, Real Application Clusters, OLAP, Data MiningAnd Real Application Testing optionsSQL> shutdown the immediate database has been disabled. The database has been detached.The ORACLE routine has been disabled.SQL> startupThe

] $SCP-R/home/oracle/product/dbs 192.183.3.145:/home/oracle/product/dbs3.2.3Copy listening Files [Email protected]~] $SCP-R/home/oracle/product/network/admin/*.ora 192.183.3.145:/home/oracle/product/network/ admin/3.3To modify a listening configuration file3.4TNS configuration file 3.5Modifying a parameter file

Tags: open fast overwrite selected format finish home record Select1. Find the Repository control file path FirstFind the path to the control file on the repository first, as in the main library, but just in case, check is OK. Sql> select name from V$controlfile;NAME--------------------------------------------------------------------------------/oracle/app/

database name. This service must be turned on or Oracle will not be able to use it at all.attached:Installation notes for a, 32-bit Oracle 11g Client (win32_11gr2_client.zip):When choosing an installation type, select Administrator, such as:The other steps are similar to the installation server side.B. PL/SQL Develope

Database Quick Start failover: ENABLED Configuration status:SUCCESS Now the fast_start failover configured for dgmgrl has been configured. The failover process is simulated below. We can use shutdown abort to simulate unexpected database crashes in Hong Kong Space, NOTE 1: The master database shutdown immediate does not start the fast start failover function. NOTE 2: oracle 11g slave uard fast start failov

the D:/instantclient_11_2 directory, create a new admin directory under the network directory, create a new file Tnsnames.ora in the Admin directory, and use a text editor to open and write the following:mwdb=(DESCRIPTION =(Address_list =(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.0.58) (PORT = 1521)))(Connect_data =(service_name = mwdb)))First mwdb: Represents the local hostname that defines the remote serverSecond mwdb: Remote DB instance Name3. Add an environment variable named Tns_admin and

New Features of Oracle 11G: collecting multi-column statistics Generally, when we submit an SQL statement to an Oracle database, Oracle selects an optimal method for execution, which is achieved by the Query Optimizer. CBO (Cost-Based Optimizer) is the default query Optimize

parameter file creation$ cd $ORACLE _home/dbs-- in this directory to hold the database initialization parameter file, we need to create in this directory a Pfile file$ VI Inithyl.ora-- Initialize parameter name is Init Plus SIDmemory_target=900m--11g , memory management will PGA and the SGA with Memory_target This one parameter is represented-- here is the data name, initially planned as SID nameDb_name=hy

Before Oracle 11g, adding a column to a large table and setting the default value would be a tragedy. sometimes you have to select the online redefinition function to achieve this requirement. adding new columns and setting the default values in 11 GB only allows you to modify the data dictionary to achieve this function, greatly improving the efficiency.Add 10g columns (default)

, can also be dynamically adjusted according to their needs, the character set to UTF-8:650) this.width=650; "src=" https://s2.51cto.com/oss/201711/02/31f64b1ab9791f2e8668217a961d0dd4.jpg "title=" 11.jpg "alt=" 31f64b1ab9791f2e8668217a961d0dd4.jpg "/>The default configuration is then done until the installation is complete:650) this.width=650; "src=" https://s5.51cto.com/oss/201711/02/21c9744ee49f3045c93fb1aca94f56c5.jpg "title=" 11.jpg "alt=" 21c9744ee49f3045c93fb1aca94f56c5.jpg "/>In the final