Oracle

Withdrawal tables are used for data rollback and transaction recovery. There are two ways to undo table space management: 1. Manual Revocation Management 2. Automatic Revocation Management Determined by the undo_management parameter. If the

Notify@mail.cnblogs.com wrote:Sender: light rainEmail: zy@ez-galaxy.comTitle: consultMessage content: How to save long text in Oracle ?? A table cannot have two clob, long, or blob ?? For example, in a forum, If you want others to input more content,

Oracle undo management tipsOracle tips by Burleson ConsultingMay 4, 2010 Question:What are some tips for managing Oracle undo? Answer:Here are my notes onGeneral undo Management AndUndo Management in RAC , Here are other undo

I'm off duty, write two articlesArticleAll go home :) Oracle was also used in the past. It was all done by others. I used it directly and only felt that the stored procedure. The SQL syntax is slightly more awkward than MSSQL. Other configurations

Note: 1) Simple Example 2) Non-pure codefirst, more is the combination of dbfirst + codefirst. 3) you only need to use the latest version of odac in Oracle, and no third-party drivers are required. Web applications require web. config configuration.

In archive mode, Oracle copies a full log file to a specified place. This process is called archiving, and the copied log file is called archiving logs. 1. Set the database to archive Query database log mode through archive log list SQL> archive log

1. Create Table space syntax: Create [temporary | undo] tablespace tablespace_name [Datafile | tempfile file_name size k | M [reuse] [autoextent off | on [next number k | M maxsize unlimited | number k | M] [Blocksize number K] [Online |

I. control file backup When the database structure changes, immediately back up the control file. Once the control file fails, you can use backup to restore it. There are two backup control file methods: 1. Copy directly Example: SQL> alter Database

To access the database through JDBC, you can obtain the table, table column, view, index, and primary key database object through the getmetadata () method of the connection object, but it does not provide a foreign key object, the following

It is very complex to create an Oracle database. Generally, you can use the dbca tool to create an Oracle database. However, in some cases, for example, to run an automated script, you must run the script to create an Oracle database. The following

Alter any cluster: modify the permissions of any clusterAlter any indexAlter any role Modify permissions of any roleAlter any sequenceAlter any SnapshotAlter any tableAlter any trigger Alter cluster Modify permissions on clustersAlter Database:

Detailed installation and configuration of ArcSDE based on Oracle and sqlserver: ArcSDE for sqlserver Installation Process 1. Windows 2000 SP3, SQL 8.3 SP3 sde8.2 with SP1, ArcInfo The computer name is zongzhan-6afuly1, SQL2000 installation is

1. view the table space name and size. Select T. tablespace_name, round (sum (Bytes/(1024*1024), 0) ts_size From dba_tablespaces T, dba_data_files d Where T. tablespace_name = D. tablespace_name Group by T. tablespace_name;　　 　　2. view the name

Document directory Oracle SQL-sorting ting one row of several columns into one column of several rows Display Oracle SQL output rows on one single line Oracle SQL-sorting ting one row of several columns into one column of several rows Oracle

 Basic Environment: Sqlplus '/As sysdba' Alter system set aq_tm_processes = 2 Scope = both; // do not set it to 0 or 10. This may disable queue monitoring and affect the memory usage of the stream pool. Alter system set global_names = true scope =

Description: 1. rownum is the number of the row returned from the query in the Oracle system. The first row is allocated 1 and the second row is 2, This pseudo field can be used to limit the total number of rows returned by the query. 2. rownum

# Alter user soctt account lock; // lock Scott user# Alter user Scott account unlock; // unlock Scott user# Alter user Scott identified by Scott // change Scott's user password to Scott, and Scott's default password to Tiger.SQL plus "sys/manager as

In our actual work, we often encounter background Oracle database environment migration and do not know if there is a problem:1. Do I know if anything is missing when the development environment is migrated to the actual environment?2. Do you know

This problem has plagued me for a while, and I searched it online. I didn't find anyone who actually solved it. There has been no class-test problem in operating Oracle databases using the nhib.pdf packaged in spring.net in the project. However,

Oracle9i introduces the merge command. You can execute the inserts and updates operations on a table in an SQL statement at the same time. the merge command selects rows from one or more data sources to update or inserting to one or more tables. in