Oracle

1, monitoring channels: summed up mainly through two aspects to carry out: 2, monitor the progress of recovery (1) View the active state of the process The V$managed_standby view is dedicated to displaying the current state of a physical

First, create a backup A physical standby database is equivalent to a mirrored copy of a primary database at a point in time, so you must have at least one full backup of the primary database before you create the physical standby database. Oracle

Role: Merge into solution with B table and new a table data, if a table does not, then the B table data into a table; Grammar: MERGE into [Your table-name] [rename your table-here] using ([Write your query here]) [rename your query-sql and using

Today, a friend asked, if the time is calculated, such as a time value plus 3 minutes, or a time minus 1 seconds. The following tests briefly illustrate how such operations are used: Sql> alter session set nls_date_format= ' Yyyy-mm-dd hh24:mi:ss '

1. Test environment 03:57:50 sql> Conn Scott/tiger Connected. 03:57:57 sql> 03:59:43 sql> SELECT * from tab; Tname Tabtype Clusterid ------------------------------ ------- ---------- Exceptions TABLE LXTB1 TABLE LXTB2 TABLE Salgrade TABLE

List of common commands summary memo The list command lists the control files and the backup information in the Rman recovery directory, which is one of the most intuitive ways to understand all of the visible database backup files. List

First, MySQL database initialization 1. Source-side configuration ADD EXTRACT EINI1, sourceistable EDIT PARAMS EINI1 EXTRACT EINI1 Sourcedb Test@localhost:3306,userid Root, PASSWORD Xifenfei Rmthost 192.168.1.111, Mgrport 7808 Rmttask

1. Preparation before installing the database. You must first confirm your machine configuration, operating system, and the version of the Oracle database you need to install. For different machines, operating systems, and Oracle versions, you can

Today, I installed Oracle 10g on my computer and now I'm going to introduce my own installation process: Environment: Os:win Server mem:250m (haha is a little bit small, install when there are warnings ~) Db:oracle 10.2.0 1). You can go to

1, open the console, select the resource-jdbc provider on the left-new, select a driver in the Drop-down list, I want to configure the Oracle connection pool, so select Oracle JDBC DRIVER, and then fill in the name and Classpath in the scene that

1 The value of the 6th to 10th record in the table 1.1 The first method, using the minus statement Suppose the DDL statement is as follows: CREATE TABLE T (ID VARCHAR2 (4) PRIMARY KEY, VALUE INT) Then the first method is

Many times the local test environment does not simulate all of the performance problems of the customer's production system, it may take only a few minutes in a local environment, but it often runs for hours on the client side, and this time, in

Last month, I had the opportunity to hear TUSC's rich Niemiec about Oracle's performance analysis issues in the Dallas Oracle user group, one of the tips he gave us, which I felt was very beneficial, that Statspack still needed in Oracle 10g. The

Now there is this environment: A web Server, a pure Java app program The database is made up of two forms of RAC. Web server and app programs are connected through OCI (RAC) Database. Out of such a strange problem, webserver update or an

ora-12638: Identity retrieval failed. With Sql:select * from T@zjdtdblink. Workaround: Look at the Dtdblink data link in the Dbastudio, not active. Look at the domain server. The problem is resolved after restarting the domain server. Check online

A lot of friends only use the Oracle deletion, but in many cases, he will find the reinstall, point to the next installation of the interface disappeared, often reluctantly had to reload the system, in fact, only your database did not delete clean,

Q: I installed in the REDHAT8 on the oracle9i process, prompted to change the second disc, but my optical drive is not back out, how to do?The CD-ROM drive is loaded with the Mount command, but when I change the disk, I use the Umount command prompt

1, the installation of Oracle transparent gateway transparent gateways.Install Oracle Select Custom Install, then select Install transparent gateway, then go in to choose the component that installs for SQL Server.2. Modify

A lot of friends in Java development, the use of Oracle database, often encounter a ora-01000:maximumopencursorsexceeded error. In fact, the reason for this error is mainly caused by code problems. Ora-01000:maximumopencursorsexceeded. Represents

1. First look at the name of the tablespace and the file you belong toSelect Tablespace_name, file_id, file_name,Round (bytes/(1024*1024), 0) Total_spaceFrom Dba_data_filesOrder BY Tablespace_name; 2. Additional Data files Alter tablespace users