Oracle

Details: In the Oracle database, log on to SQL * Plus using system,   Run the startup command to prompt the ORA-01031, with insufficient permissions. Note: Here system is the DBA permission! Solution: It is strange that since it is a DBA, how

Lowercase letters to uppercase letters: Upper (); Uppercase to lowercase letters: lower (); String truncation function: substr (STR, A, B ); A, B is an integer, STR is a string, Truncates string 'str' from 'A' and searches from the right to

1. Char () type: (1) If the length defined in the database is 10 bits, and the actual length of incoming data is less than 10 bits, the system uses a null string to fill up 10 digits after the input data. (2) A full angle is regarded as a

Export:Statement exp username/password @ orcl file = D: \ 20111119db. dmpExp: Export export keywordUsername/password: Export user@ Orcl: name of the exported ORACLE ServerFile = D: \ 20111119db. dmp: the exported file address. The suffix is

To insert a date/time value into the Oracle table, you'll need to use the to_date function. The to_date function allows you to define the format of the date/time value. For example, we cocould Insert the '3-may-03 21:02:44 'value as follows:

Limit cannot be used for Oracle paging query.1. Select * From table_name where rownum> begin and rownum 2. SQL = "select * from table"Con. preparecall ("select * from (select. *, rownum R from ("+ SQL +") A where rownum "+ (intPage-1)* Intpagesize )

$ Sudo Su- # Apt-Get install build-essential libaio1 gawk KSh libmotif3 alien libtool LSB-rpm Root @ hard :~ # Cd/binRoot @ hard:/bin # ls-L/bin/shLrwxrwxrwx 1 Root 4 2008-04-28 :59/bin/sh-> dashRoot @ hard:/bin # ln-SF bash/bin/shRoot @

Today, ibatis3 is used to insert a user table in Oracle: Insert into sq_adminName,Password,# {Inneruserid, jdbctype = decimal },# {Name, jdbctype = varchar },# {Password, jdbctype = varchar }, Report: NULL cannot be inserted into the ID. Oh! I did

Data library usage rules Terms: Site) Websites already established or to be established by the company, such as the Chinese site (China), the international site (Alibaba), and the Chinese site (China. OLPS Online Process system, an online processing

--------- Mathematical functions 1. Absolute ValueS: Select ABS (-1) ValueO: Select ABS (-1) value from dual 2. INTEGER (large)S: Select ceiling (-1.001) ValueO: Select Ceil (-1.001) value from dual 3. Round (small)S: Select floor (-1.001)

In Oracle, sequence is the so-called serial number, which is automatically increased every time it is obtained. It is generally used in places where the sequence numbers need to be sorted. 1. createsequence you must first have the createsequence or

Quick Reference For performance optimization, see Oracle hard parsing and soft Parsing Shared Pool Tuning) Buffer cache adjustment and optimization (1) Use of Oracle table cache (caching table)   For the Oracle architecture, see

Oracle Data Import and Export imp/exp is equivalent to logical (data) backup and recovery, supporting client and server operations.The exp command can export data from a remote database server to a local DMP file,The IMP command can import the DMP

Create Or Replace Function F_pinyin (p_name In Varchar2 ) Return Varchar2 As V_compare Varchar2 ( 100 ); V_return Varchar2 ( 4000 ); Function F_nlssort (p_word In Varchar2 ) Return Varchar2 As Begin Return Nlssort

Sqlclient contains sqlbulkcopy and system. Data. oracleclient does not. The oraclebulkcopy Component in Oracle dataacess provider for DOTNET has memory leakage, Until the system memory is exhausted,ProgramAutomatic crash. The oraclebulkcopy

Exists Execution Process Select * from T1 where exists (select null from T2 where Y = X) It can be understood: For X in (select * from T1) Loop If (exists (select null from T2 where Y = x. x) Then Output the record End if End Loop Performance

This is slightly modified version of: http://milw0rm.com/exploits/7677This is based on cursor injection and does not need create function privileges: declared number; begind: = inline; dbms_ SQL .parse (D, 'destare Pragma autonomous_transaction;

If we say what is the most valuable hardware in a computer, it is not a hard disk. What gives it high value? There is no doubt that the data, and the database, I am afraid, is the most valuable thing in the software. As a DBA, have you protected

First, you need to install the Oracle client. It depends on your situation where the database is stored. Add SubSonic. dll references to the project; Add     Then SubSonic DAL, refer to

First, the following version is supported: Http://download.oracle.com/otn/nt/oracle10g/10203/10203_vista_w2k8_x86_production_db.zip Error: Checking operating system requirements...Results: 5.0, 5.1, 5.2, 6.0Actual result: 6.1Check complete. The