Oracle

The Oracle tutorial you are looking at is: Oracle Constraint management scripts. As an Oracle database administrator, you will encounter such database management requirements, stopping or opening constraints and triggers for all tables under the

In general, there is not much chance of using bulk fetch, but Oracle provides this functionality we'd better get familiar with it and maybe when it will be used. Copy Code code as follows: Declare Cursor C1 is select * from

Oracle command line Delete User: Copy Code code as follows: Connect/as Sysdba; Shutdown abort; Startup Drop user User1 cascade; Exit Oracle Command line creation User: Copy Code code as follows: Create

Environment: A machine and B machine are all Linux systems, but because B machine has not enough space, so stop operating the database service, ready to export operations in a machine. Export statement exp User/password@sid FILE=0320.DMP The error

Today I found a good web site to display Oracle syntax. Too much content, not one of the excerpts, recorded here, but also easy to find their own. http://www.ss64.com/ora/ The directory is as follows: An A-Z Index ofOracle SQLCommands (Version 9.2

Perform a flashback Query by using a SELECT statementwith as of clause. Use a flashback query to Restrieve data as it existed at some time in the past. The query explicitly references a past time by menasof timestamp or SCN. IT returns committed

If the user mistakenly deletes/updates the data, as the user does not have any direct method to restore, they must help the DBA to restore the database, to the oracle9i, this embarrassing situation has improved. A new technical tool in the Or

Previously developed when used more of the MySQL and SQL Server,oracle used less, more unfamiliar to use, MySQL and SQL Server to use more similar to the use of Oracle and they are different, Oracle in the creation of a database to correspond to a

Today, a co-worker suddenly asked me why the index failed. To be honest, there are many reasons for failure: But if it's the same SQL, if you can use the index before, then you won't be able to use the index now, the following are the main things:

The example in this article describes how Oracle implements multiple-line consolidation. Share to everyone for your reference. The specific analysis is as follows: When writing SQL, there is often a combination of fields for a column, such as

Oracle a large business SQL often does not know where to run, you can use the following SQL to view the progress of execution. Copy Code code as follows: Set Linesize 400; Set pagesize 400; Col sql_text format A100; Col opname

Copy Code code as follows: /* Formatted on 2012/5/31 14:51:13 (QP5 v5.185.11230.41888) * * SELECT D.tablespace_name, Space | | ' m ' "Sum_space (m)", BLOCKS "Sum_blocks", SPACE-NVL (free_space, 0) | | ' m ' "Used_space (m)", ROUND ((1-NVL (

User A deletes, but does not commit. Copy Code code as follows: sql> Delete from test where object_id 8 rows have been deleted. User B performs a deletion or updates a id Copy Code code as follows: sql>

The Oracle tutorial being looked at is Oracle's method of establishing binary file indexes. Oracle text is Oracle's Full-text search technology and is part of the standard and Enterprise editions of the 9i edition. Oracle text uses standard SQL

First, the general inquiry /* Query table Data */ SELECT * from STU /* Remove the first 3 lines of data/ select * from Stu where rownum /* Fuzzy query/ SELECT * from Stu where stu_id like ' stu001% '

User-related SQL statements /* New User/* Create user SA identified by 2013; Description: SA user name, 2013 password /* Authorize Connect,resource to the user sa*/ grant Connect,resource to SA; Description: Connect

There are a variety of Oracle functions, and the system variable function is one of them, and here's a look at three of the most common system variable functions, which I hope will help you learn about Oracle. Oracle System Variable functions: (1

This exception may occur because an empty data table may exist for the exported user's table. First of all: View: Sql>show parameter deferred_segment_creation; If true, the argument is changed to false; In Sqlplus, execute the following

The actual example code below can put the results of a query into a custom table, and you can then query the data from this custom table: With AA as (SELECT ticketnumber, TicketType, versionnumber, Stagename, dtanalyzed, Gisprocessid,

Sql> SELECT Ktuxeusn, Ktuxeslt, KTUXESQN,//* Transaction ID */ 2 Ktuxesta Status, KTUXECFL Flags, Ktuxesiz 3 FR OM x$ktuxe 4 WHERE ktuxesta!= ' INACTIVE '; Ktuxeusn ktuxeslt ktuxesqn STATUS FLAGS ktuxesiz ---------------------------------------