Oracle

The Redo log (redo log) is controlled by the LGWR. Oracle does not immediately modify the data block for DML operation data, but produces redo records and logs it to the online redo log, when redo log is full, or the global checkpoint is started, or

(Excerpt from: http://www.cnblogs.com/mchina/archive/2012/09/12/2678093.html)The backup operation of the database is one of the most important tasks in running the entire project.I. Export and import of dataThe export and import of data is for a

--Create the user create user XX identified by "", default tablespace USERS temporary tablespace TEMP profile default Password expire;--grant/revoke role privileges Grant connect to Xx;grant Ctxapp to Xx;grant dba to Xx;grant exp_full_database to xx;

1. The connection order in the WHERE clause:Oracle parses the WHERE clause in a bottom-up order.According to this principle, the connection between tables must be written before other where conditions, and those conditions that can filter out the

I used to have this problem when I installed Oracle, and I didn't care much about it, so I modified the cvu_ in the CLIENT\STAGE\CVU directory. Prereq.xml file (add support for the current operating system) to solve the problem, but also did not

racle11g, after a silent installation, the user's password expiration is set to 180 days by default, and after 180 days the password expires and Oracle prompts to change the password.   Our project uses JDBC to connect to Oracle database, unable to

Description:Because many systems do not support the use of OPENJDK, it is necessary to install Oracle JDK under Ubuntu. While the installation of Oracle JDK does not seem to provide the apt way, so the way to install Oracle JDK is relatively

Oracletemporary tables are divided intosession-level temporary tables and transaction-level temporary tables. A session-level temporary table is the data in a staging table that exists only during the session lifecycle, and when the user exits the

Oracle ODBC ConfigurationWin7 64-bit installation of Oracle ODBC you cannot install a data source by using the data source (OBDC) in Administrative Tools, Control Panel.Instead, enter the C:\Windows\SysWOW64\odbcad32.exe installation data source in

Tag:io   ar   sp    Data    div   on     issues     work    bs    Oracle 11g has a new parameter: deferred_segment_creation, meaning segment delay creation, which is true by default. What does it mean exactly? If this parameter is set to True, you

Ext.: http://database.51cto.com/art/200910/158576.htmIn the daily work of the DBA, the operations that are unlocked for the Oracle user are often encountered, and this article gives an operation method for unlocking the Oracle user under the command

Object permissions refer to the right to access other schemes, and the user directly accesses their own schema objects, but if you want to access objects of other scenarios, you must have permission to the object.For example, if a Smith user wants

First, overview:Features of the Oracle Database temp table: Temporary tables are saved in temp by default; The table structure persists until it is deleted; that is, it is created once and used permanently; Primary foreign keys are

Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the following sources, otherwise, the legal responsibility to pursue copyright.Deep Blue Blog: http://blog.csdn.net/huangyanlong/article/details/40165733We

Oracle "CONNECT by" is a hierarchical query clause that is typically used for queries of tree or hierarchical result sets. Its syntax is:[START with condition] CONNECT by [Nocycle] ConditionDescription1. Start with: Tells the system which node to

Google has appealed to the U.S. Supreme Court this week to intervene in a Java infringement case between Google and Oracle and make a final decision, according to foreign media reports. Google as the defendant, Oracle as the plaintiff, the two

Tutorial on manually deleting a database in Oracle 1. manually delete a file system database 1. Stop listening and OEM The Code is as follows: $ Lsnrctl stop listener_name $ Emctl stop dbconsole 2. Obtain information about data files, log files, and

View and modify the maximum number of connections in oracleStep 1: In the cmd command line, enter sqlplus or directly open command window in plsqlStep 2: Enter the user name and password as prompted1. view the processes and sessions Parameters SQL>

The saveOrUapdate and mergesaveoruapdate in merge into Oracle 1. Initial data: SQL> select * from a; ID NAME---------------------- ----------------------1 12 13 14

The new Oracle table uses sequence as the insert value. The initial value is not the first, oraclesequence This problem occurs when you use oracle11g to insert data:   1 -- CREATE test TABLE -- 2 create table tbl_test (3 test_id number primary key, 4