Oracle

Export from the database server using EXP is displayed as follows: [oracle@kf15-1]:/users/oracle>$ exp username/passwd@kf15-1/i1000 tables=table_name file=table_name_unix.dmp Satistics=none buffer=1000000 export:release 10.2.0.4.0-production on

Analyze table can typically specify analysis: Table, all fields, all indexed fields, all indexes. If not specified, all are analyzed. sql> Analyze table my_table compute statistics; sql> Analyze table my_table compute Statistics for table for all

In Java Operations on Oracle, date fields are a headache, but it is not difficult to grasp the matter carefully. Give an example to illustrate: There are name VARCHAR2 (20)//book names in table books, Buydate date//Purchase two fields. A database

In Oracle databases, sequence is equivalent to serial number, sequence automatically increases each time it is taken, and is typically used to sort by sequence number.1, Create Sequence (Note: You need to have create sequence or create any sequence

Dead lock. Use the SELECT * from V$session, find the session that has been disconnected, and note the value of Sid and Serial#; Kill the session with ALTER SYSTEM kill Session ' SID, serial# '. Reset Oracle [Root@localhost ~]# su

1, the creation and description of the sequence To create a sequence, the syntax format for the Oracle sequence is:CREATE SEQUENCE sequence Name[INCREMENT by N][START with N][{Maxvalue/minvalue n| Nomaxvalue}][{cycle| Nocycle}][{CACHE n| NoCache}]; 1

Oracle creates users and specifies default and default table spaces Create a temporary table space Create temporary tablespace BocodbtempdbsTempfile ' d:/oracle/oradata/bocodb/bocodata/bocodbtempdbs01.dbf 'Size 32mAutoextend onNext 32m MaxSize 2048

--loop cycle Usage (output 1 to ten) declare V_num number (2): = 0; Begin loop V_num: = V_num + 1; Exit when V_num > 10; --The above exit loop can also use the following 3 lines/* if (V_num > 9) then exit; End

In Oracle9i, Oracle provides an internal event that forces a flush buffer Cache with the syntax: alter session SET events ' immediate trace name Flush_cache Level 1 '; Or: ALTER session SET events = ' Immediate trace name Flush_cache '; Similarly,

To start and close the database,must be logged on as a user with Oracle Administrator privileges, usually with aSYSDBAPermission for the user to log in. In general, we often use the SYS user to start and close the database with a SYSDBA connection.

I know Oracle does not support auto_increment automatically increment, need to establish a sequence to achieve automatic increment. Then set up a trigger to implement the Add 1 function. The function that I want to implement is to add a piece of

Oracle 2010 Http://www.cnblogs.com/jiguixin/archive/2011/09/09/2172672.html Download Address: Http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_client.zip Unzip the downloaded zip file first and run the Setup.exe file.

Create or Replace function Row_split (var_str in String, Var_split in string) return t_ret_table pipelined as Var_tmp varchar2 (4000); Var_element varchar2 (4000); N_length number : = Length (var_split); Begin Var_tmp: = var_str;

Create or Replace function test111 (ItemNumber in varchar2) return sys_refcursor is return_cursor sys_refcursor; begin OPEN return_cursor for SELECT ' a ' dual WHERE 1 = itemnumber; return return_cursor; End test111; Use the following

Step One: Locate the session information for the specified user, and draw up the execution script: #!/bin/kshecho "Conn Sys/sys as SysdbaSelect ' Alter system kill session ' ' | | Sid | | |  serial# | | | ' From sys.gv\ $session where username= '

Log in to the database with DBA authority. 1, select * from V$locked_object detect the Locked object, where object_id is the object of the id,session_id is locked object has a session ID; 2, select object_name, object_ Type from dba_objects where

This example has been completely tested, one-way, bidirectional synchronization can be used. --Noun Description: Source--The database being synchronizedPurpose-the database to sync to The first 6 steps must be performed, after the 6th is some

Oracle in%rowtype: %rowtype: Indicates that the type is a row data type, stored as a row of data, a row with many columns, equivalent to a row of data in a table, or a row of data in a cursor. The%rowtype effect is that when querying the entire

Software Environment: arcgis10+python2.6+oracle10r2+ Cx_oracle-5.1-10g.win32-py2.6.msi (http://cx-oracle.sourceforge.net/) C:\python >>>import arcpy >>>import cx_oracle>>>orcl=cx_oracle.connect (' shgxdb ', ' shgxdb ', ' 192.168.0.116:1521/ORCL ') >>

  Oracle Data Source Configuration   Prerequisites: Jboss_home=jboss's home directory (installation directory) has the Jndi name of the test Jboss4.2.0-ga version data source is oracleds   Oracle data source with password code is configured