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Oracle Tutorial training to learn Oracle ASM Management and routine maintenance, ASM basics, ASM installation Configuration instructions for Oracle stand-alone and RAC, based on the startup and shutdown of Oracle stand-alone and RAC ASM environments, Creation and maintenance of ASM Disk group under graphical interface and command line, table space management in ASM environment, introduction of ASMCMD management tools, configuration of ASM Monitoring for remote connection management, the same ma
course are as follows:Introduction to Users and patternsCreate user profile, user role, create user, modify user propertiesUser management, create, delete, modifyCreation and management of rolesallocation, recovery, inspection, maintenance of permissionsProfiles profile and resource managementUser security and password policiesHandling of password Policy 180-day expirationDatabase pre-defined administrative accounts (Sys/system/dbsnmp/sysman)How to create a user for database monitoring permissi
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Oracle SQL language DML statements and transactions _ Beyond OCP proficient Oracle Video Tutorial Training 28This course introduces:Oracle Video tutorial, wind Brother this set of Oracle Tutorial training is the Oracle SQL language DML statements and transaction management, the course content is detailed as follows:Learn to use the Insert commandLearn to use the update commandLearn to use the Delete commandLearn to create PL/SQL objectsTransaction con
Oracle Performance Optimization performance tracking tool-beyond OCP proficient in Oracle video tutorial Training 34Course IntroductionOracle Video tutorial, wind Brother this set of Oracle Tutorial training Video Learning Address:Http://edu.51cto.com/course/course_id-8328.htmlOracle Performance optimization Statistical information management, the course content is as follows:01. How to get trace files02.sql_trace and Cases03.10046 Events and Cases04.
JavaScript: S.O.L. I. D. Open and Close principles OCPPreface
In this chapter, we will explain part 1 of The Five Principles of S.O.L. I. D: Implementation of The JavaScript language, and The Principle of Open and Closed OCP (The Open/Closed Principle ).
The opening/closing principle is described as follows:
Software entities (classes, modules, functions, etc .) shocould be open for extension but closed for modification. software entities (classes, mo
PrefaceIn this chapter, we will explain part 1 of The Five Principles of S.O.L. I. D: Implementation of The JavaScript language, and The Principle of Open and Closed OCP (The Open/Closed Principle ).The opening/closing principle is described as follows:Software entities (classes, modules, functions, etc.) shocould be open for extension but closed for modification.Software entities (classes, modules, methods, etc.) should be open to extensions and clos
133.You created a profile app_user and assigned it to the users. After a month, you decide to drop theProfile. Some user sessions is currently connected to the database instance and is using theApp_user profile.This command was used to drop the profile:sql> DROP profile App_user;Which statement describes the result?A. The command produces an error.B. The profile was dropped and current user sessions use the DEFAULT profile immediately.C. The profile was dropped and only the subsequent user sessi
) and the recovery catalog. You want to copyThe production database to another host, SHOST2, tests the new application.When you ensure that the backup of the target database is accessible on the new host, you mustDo you want to restore and restore a backup of your test environment?A recover control file from backup with NOCATALOG option and recover data fileA correct, b error is that the topic requires what must, and if the directory structure is the same, it does not need set newnameFor each da
-00312: Online log 1 thread 1: ' E:\ORACLE\ORADATA\ORCL\REDO01. LOG 'View ' E:\ORACLE\ORADATA...\ file, no REDO01.LOG file, only REDO03.LOG, obviously, this is the root cause of ORACLE boot failure, and ORA-01033 error is only a superficial phenomenon. Find the root of the problem is good to do, Google, there is a solution, can not help but once again feel that there is no solution to the dog world problem. Here's how to fix it:C:\sqlplus/nologSql>connect Sys/as SYSDBASql>alter Database Clear Lo
The most basic principles of object-orientedSoftware entites like classes,modules and functions should is open for extension but cloased for modificationsA software entity such as classes, modules, and functions should be open to extensions and closed for modification.At the beginning of the design of the actual development process, we should list out all the possible behaviors of the system and add these behaviors to the abstract bottom, which is simply impossible, and it is not economical to d
Customers Where cust _maritial_status= ' married ' group by cust_city; C: Statistics ' Tokyo ' and ' Sydney ' Two cities average male customer credit limit Selectavg (cust_credit_limit) from Customers Where cust_gender= ' male ' andcust_city in (" tokyo ', ' sydney '); D: List the customers with the same credit limit in Tokyo city.Select * from Customers cust1,customers Cust2where Cust1.cust_credit_limit and Cust2. cust_city= ' Tokyo '; E: Count the number of custo
, we create an object for each problem type for the respective code implementation, but each implementation must contain the Renderinput method to overwrite the Renderinput code in the Questioncreator method, which is what we often call the policy pattern.
By refactoring, we can remove the enumeration answertype of the unnecessary problem type, and let choices be the required parameter for the Choicequestioncreator function (the previous version is an optional parameter).SummarizeRefactorin
2. View the Exhibit to examine the description for the SALES table.Which views can has all DML operations performed on it?(Choose all, apply.)A.CREATE VIEW v3as SELECT * from SALES WHERE cust_id = 2034 with CHECK OPTION;B.CREATE VIEW v1as SELECT * from SALES WHERE time_id C.CREATE VIEW v2as SELECT prod_id, cust_id, time_id from SALES WHERE time_id D.CREATE VIEW v4as SELECT prod_id, cust_id, SUM (quantity_sold) from SALES WHERE time_id Answer:abTopic Analysis:The question is, which view
successfully but does not give the required result.Answer:APersonal Understanding:The first condition of the topic, requires the return of the letter A,b,c the beginning of the customer name, query two did not return to meet the requirements of the results, explanation of reason there is a variety of understanding. According to personal understanding, the second query returns the beginning of A and B (including case!). The user name of all and single letter C (including Case c).In fact, I think
IsTo flash back to the database, Oracle needs to record the before image of the data block to a new log
This type of log is named flashback database logs flash back log, flash back log is always repeatedly used, continuous writing
When a data block is modified for the first time in an instance, the foreground process copies the before image of the data block to the flashback log buffer in the shared pool.
The rvwr Process regularly refreshes records in the flashback log buffer to the disk.
Befor
!
If the buffer cache is too smalll for your system,
You will see "free buffer waits" in the V $ system_event table. And that is the better place to check.
If the hit rate is indeed very low, you may try to check Top N (SQL or event)
The following uses top SQL as an example.
There are many ways to find top SQL, the most common method is to find top SQL in the statspack report. In addition, OEM top SQL tool oem SQL aanlyzer
10gaddm can also sort top SQL based on the influence of SQL on the sys
wocould get created and all the foreign key constraints defined on the specified columns wocould be passed to the new table.
CreateTableT2(Col1Number (2)PrimaryKey,Col2Varchar2 (10));CreateTableT3AsSelect*FromT2;
The not null constraint implicitly declared (for example, the not null constraint of the primary key) will not inherit. (Can this be explained in the above example ?)
Creating a table using a subquery
Create a table and insert rows by combining the create
TABLE statement
17. You configure autobackup to on an RMAN session. When will RMAN back up the control file?(Choose all that apply .)
A. When you run an RMAN backup command
B. When you run an RMAN allocate command
C. When you add or drop a table in the system tablespace
D. When you change the physical structure of the database, such as dropping a tablespace
E. When you specify the including controlfile clause
Original answer: A is obviously incorrect!
Correct answer: de
[Resolution]
The atuobackup on here re
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