Oracle

Archive mode is very important in the real production environment of Oracle. You can use archive mode for hot backup, and then quickly recover data when a database problem occurs, saving the database. But sometimes the database is built, and it is

1. Add the DMS. jar, ojdbc6.jar, ojdbc6dms. jar, and orai18n. Jar packages of the Oracle database to the following path:   Java_home/JRE/lib/EXT   2. Add the DMS. jar, ojdbc6.jar, ojdbc6dms. jar, and orai18n. Jar packages of the Oracle database

How to connect Oracle SQL developer to ms SQL Server 2000: 1. Download the net. SourceForge. JDBC. Driver driver Driver (http://sourceforge.net has download, I downloaded the jtds-1.2.1) 2, extract and copy the jtds-1.2.1.jar to the /lib directory

Insufficient permissions are reported when creating a tablespace. The following problems are caused: Create tablespace test1 datafile 'd: \ mydf. dbf' size 10 m;1. Create a tablespace and report insufficient Permissions2. view the permissions of the

Solve the Problem of Oracle Database client random port connection. Add the comment to your favorites on your mobile phone at on so that the Oracle client can normally connect to an Oracle server installed on windows with a firewall, it is not

The control file is of great significance in backup. We recommend that you back up it separately each time. If the database version permits, you should set it to the control file for automatic backup. Increase the value of the initialization

The following example shows how to import and export ORACLE data to a user in another database: Exp userid = system/manager owner = username1 file = expfile. dmp IMP userid = system/manager fromuser = username1 touser = username2 ignore = y file =

Do you randomly retrieve qualified email or mobile phone number users for an activity in your work to issue award notifications or other messages?　　If yes, you can use PL/SQL to generate random numbers in Oracle. The directory name

  Conditions for running data guard1. The same version of Oracle Enterprise Edition must be installed on the master database and all slave databases.2. The master database must run in archive mode.3. the operating system of the master database and

Relational databases provide storage and extraction of large documents. For large documents such as video, audio, and image, fields need to be opened for storing abstract information. Therefore, large fields are not accessed during query and

 1. Check the Oracle Process $ PS-Ef | grep "ora _" | grep-V grep Oracle 5998 1 0 11:15:59? 0: 01 ora_j000_pprd10 Oracle 2968 1 0 21:16:57? 0: 00 ora_q000_pprd10 Oracle 2927 1 0 21:16:33? 0: 00 ora_pmon_pprd10 Oracle 2933 1 0 21:16:34? 0: 07 ora_dbw0

After Oracle is installed in Linux, If you restart Linux, Oracle will not start automatically. You can manually call the dbstart command to start it. However, this seems complicated. We can configure the Oracle Automatic startup script and then use

When you connect to a 10 Gb database using the oracle 9I em console client and use the normal connection identity, a message indicating a lack of select any dictionary permissions is displayed. However, you can connect to the cluster by using the

There are many methods to access the Oracle database using Visual Basic, and each method has its advantages and disadvantages. You can select the method that best suits your work environment. First, you must understand what these methods are. In

Oracle's security measures mainly include three aspects: user identification and authentication; authorization and inspection mechanisms; and audit technology (whether to use audit technology can be flexibly selected by users ); in addition, Oracle

The database view is an extension object of a table. Theoretically, data is updated using the DML Statement on the view, which will eventually be completed on the basic table. That is to say, you can modify the content of the base table through the

Typical query method: Select emp_no from hr_basicinfo where emp_no not in (select emp_no from EMP ); If EMP is large, it may be slow because Oracle will perform a time-intensive full table scan on EMP. Not in Oracle is inefficient1. Use external

In the afternoon, a colleague executed a delete statement and executed 0.11 million records in an hour. This statement is delete from table_name where rowid = 'xxxxaaa' The execution plan is indeed indexed by a create_time-based index. Later, many

Today, oracle SQL plus performed the delete and query operations and then the query operations in PL/SQL. The results of the same statements were different, which made me feel quite depressed, later, I suddenly thought that the data on both sides

I used Oracle V8.1.6 of Linux and installed it on RedHat Linux 6.0. Oracle Installation includes two parts: Enterprise Edition server and client. You can select different parts for installation based on your actual situation. Here, the Enterprise