performance tuning in oracle 11g

-step solutions to simple and complex backup, restore, and recovery operations * Is task-oriented, making it easy for you to find the solution to pressing backup and recovery problems * Respects your time by providing example-based solutions, not endless rea Ding material When the pressure's on, you dont have time for long discussions of theory. this book gets right to the point with quick and easy-to-read, step-by-step solutions that can help you backup and recover your data with confidence.

devices will no longer be supported in Oracle12. Oracle strongly recommends using at least 3 voting disks in a different location. When using ASM to manage voting disks, you need to be aware of the redundancy levels of disk groups and failure groups. Note that all copies of voting disk are in one disk group, and you cannot distribute voting disks across multiple disk groups. When using an externally redundant disk group, you can only have 1 voting di

Detailed introduction to services and services required for Oracle 11gAfter successfully installing the Oracle 11g Database, you will find that your computer runs slowly, and your computer with low configuration may even experience very bad conditions, by disabling non-essential Oracle services, you can speed up your c

Tags: CEO recover Home logo Targe Sch Server Instance ListenerTransferred from:http://www.educity.cn/shujuku/404120.html After successfully installing the Oracle 11g database, you will find that your computer is running slower, that your computer is running faster with a lower-profile PC or even a very card-enabled Oracle service. So, how do you do it specifical

medium-sized systems and concurrent access users are not widely used, is the first choice to develop and debug JSP programs.is actually a Java can be developed to publish the Dongdong3 Oracle 11gOracle 11g is the latest database software launched, Oracle 11g has more than 400 features, after 15 million hours of testin

Considerations for new features of Oracle 11g After upgrading from Oracle 10g to Oracle 11g, you need to understand the new features of Oracle 11G. These features may affect the applica

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

during parse:1OVERALL TOTALS for all RECURSIVE statementsCall count CPU Elapsed disk query current rows------- ------ -------- ---------- ---------- ---------- ---------- ----------Parse 1 0.00 0.00 0 0 0 0Execute 3 0.00 0.00 0 0 0 0Fetch 3 0.00 0.00 0 9 0 3------- ------ -------- ---------- ---------- ---------- ---------- ----------Total 7 0.00 0.00 0 9 0 3Misses in library cache during parse:1Misses in library cache during execute:11 user SQL statements in session.3 Internal SQL statements i

The following articles mainly introduce the five features of Oracle 11g and the actual and practical advantages. The application ratio of Oracle 11g performance in practice is still the majority, if you are curious about this newly developed technology, the following article

')))*Row 3 has an error:ORA-00907: missing right brackets SQL> create table t_virtual(Object_id number,Object_name varchar2 (100 ),Created date,Create_year AS (to_number (to_char (created, 'mm '))))Partition by list (create_year)(Partition P1 VALUES (1 ),Partition P2 VALUES (2 ),Partition P3 VALUES (3 ),Partition P4 VALUES (4 ),Partition P5 VALUES (5 ),Partition P6 VALUES (6 ),Partition P7 VALUES (7 ),Partition P8 VALUES (8 ),Partition P9 VALUES (9 ),Partition P10 VALUES (10 ),Partition P11 VAL

Description of the new and enhanced RMAN functions in Oracle Database 11g• Configure an archiving log deletion policy • Use the Oracle network to copy active databases (No backups) • backing up large files in multiple parts • Creating archive backups for long-term storage • Managing and restoring directories, such as merging multiple directory versions • describi

1. automatic Installation selected during installation. Because the user name and password have been forgotten for a long time, I have tried several default user names and passwords (The table contains the default user name and password ), the user name and password are all invalid. Finally, you have tried dbsnmp/dbsnmp, prompting you to be locked;2. Log On With sqlplus/as sysdba. The prompt is displayed.3.SQL> alter user dbsnmp account unlock;User altered.SQL> alter user dbsnmp identified by db

information, this feature can package information related to an event. And you can also send packaged information to the Oracle support team. 6, based on the characteristics of the patch (Feature Based patching) This feature makes it easy to distinguish between the features in a patch package that you are using and that you have to play. Enterprise Manager (EM) enables you to subscribe to a feature-based patch service, so Enterprise Manager can aut

----------------------------------------------------------------------------------------------------Predicate Information (identified by operation id ):---------------------------------------------------2-filter ("COL1" = 1)Note------Dynamic sampling used for this statement (level = 2)Statistics----------------------------------------------------------5 recursive cballs0 db block gets15 consistent gets0 physical reads0 redo size385 bytes sent via SQL * Net to client338 bytes encoded ed via SQL

Before 11g, add a field with default value, the implementation principle is as follows:ALTER TABLE T1 add C1 varchar2 (a) default ' XX ' NOT null;Assuming that the T1 table has 40 million rows of data, Oracle returns a "Success Prompt" to the user when it executes the above DDL statement while updating the 40 million rows of data successfully. The following issues may be caused:1. Updating 40 million rows o

Note: This article is translated from Oracle Data Guard 11g Handbook Page 78–page 88 In terms of data Guard (later written as DG), we only focus on the following three types of parameters: 1. Parameters independent of database roles2. Parameters when the database role is primary3. Parameters when the database role is standby Although DG has a lot of configuration parameters, we actually use only a few of

Oracle 11g PL/SQL function result cache, oracle11g Two experiments have been conducted to simulate the Oracle Performance Diagnosis art. The book says that if you don't need RELIES_ON, then the changes to the objects on which the function depends will not result in the invalid result cache operation (result_cache RELIE

After successfully installing the Oracle 11g Database, you will find that your computer runs slowly, and your computer with low configuration may even experience very bad conditions, by disabling non-essential Oracle services, you can speed up your computer. So what should we do? After Oracle

After successfully installing Oracle 11g in accordance with the methods in Windows 7 64-bit installation of Oracle 11g R2, there are 7 services that have the meanings of seven services, respectively:1. Oracle ORCL VSS Writer service:oracle Volume Mapping copy write service,

Bkjia.com exclusive Article]Oracle Database 11gR1 new database replay DBR) function allows Oracle DBA to capture load from an Oracle 10gR2 environment, and then replay this load in Oracle 11gR1 environment, this section analyzes how to migrate an existing database to a new version and the impact on the overall system