Oracle

    Instant Client is a lightweight database client released by Oracle (R). You can use it to run OCI, occi, Pro * C, ODBC, and JDBC without installing a standard client.Program.This installer can be used to install components. To minimize

1. Obtain the system time Statement (ssxff6 gets the six digits after the decimal point)  Select sysdate, systimestamp, to_char (systimestamp, 'yyyymmdd hh24: MI: ssxff6'), to_char (systimestamp, 'yyyymmdd hh24: MI: Ss. ff6') from dual; 2.

ORACLE: Syntax: Substr (string, A, B ): A: Starting from the nth digit, the first digit A = 1,Last Third digit (right in sqlserver) A =-3 B: Several Characters Substr ('this is a test', 6, 2) wocould return 'is 'substr ('this is a test', 6)

Run the command in the Command window. Variable names after variable must be the same as those after job =>: job. Otherwise, the error "Not all variables are bound" will be reported. After successful execution, the job number is automatically

 Common Oracle Import and Export commands   Run this command in "Start Menu> RUN> cmd ". One-stop data export (exp.exe) 1. Export the database orcl completely, username system, and password accp to the d: \ daochu. dmp file.Exp system/ACCP @ orcl

1. Standard (the end of a case is an end case, but the end can also be used. 2 is, but the end cannot be used directly in 1, and an error will be reported) if tmpmoshiid is not null then CASE WHEN (main2.allcount 2. End directly at the end.

1. For '1', '2', '3', '4', '5' (the comma is outside the string) SQL> SELECT COLUMN_VALUE FROM TABLE(SYS.ODCIVARCHAR2LIST('1','2','3','4','5'));COLUMN_VALUE--------------------------------------------------------------------------------12345 2. For

-- 1: Create Table partition tablespace tab_cc as select * From cc_event_reserve where rownum 3, cascade => true, no_invalidate => false ); -- 6: Enable the logging function of the new table and delete the foreign key constraint alter table

For more information about what the Oracle high-speed cache is and how it works, see: Http://www.php100.com/html/webkaifa/database/oracle/2008/0709/1348.html 1. We can configure sharedPool (to ensure that users find cached statements in the memory)

1. Download the Oracle client package (30 m) You only need Oracle can download a software named Instant Client package. This software does not need to be installed and can be used as long as it is decompressed. It is very convenient and can be used

Open the project in my virtual machine this morning to prepare and check. As a result, the dbconsole service of Oracle cannot be started. There are many examples on the Internet. I tried and did not solve the problem. I tried Oracle Database

Although talking about hidden parameters must be meaningless, but those hidden parameters are valuable, we have to "respect" those hidden parameters" In Aum, why does my undo tablespace only grow and does not recycle it? Now it's more than 40 GB

My environment:[Root @ localhost ~] # Uname-Linux localhost. localdomain 2.6.18-308. el5xen #1 SMP Fri Jan 27 17:59:00 est 2012 i686 i686 i386 GNU/Linux Sys @ orcl> select * from V $ version where rownum = 1; Banner-----------------------------------

Create or replace procedure show_space (P_segname_1 in varchar2, P_space in varchar2 default 'manual ', P_type_1 in varchar2 default 'table ', P_analyzed in varchar2 default 'n ', P_owner_1 in varchar2 Default User) As P_segname varchar2 (100

PGA is the dedicated memory of a process and never allows access by other processes. You can use the C language to call malloc () allocation during runtime to dynamically scale up or down. Furthermore, PGA will never be allocated in the SGA of

For beginners, many Oracle names are confusing. Me too. The relationship between database name-Global name-service name-Instance name-alias is constantly cut, and the logic is still messy. I understand it. It's a bit of a taste in my mind. SQL> show

Make the program a soul By think 1 What is PL/SQL? Procedures, functions, and triggers are written in PL/SQL. The process, function, and trigger are in the Oracle System tablespace. PL/SQL is a very powerful database Procedural Language The function

Environment: ora10g rhel5.8Description: bbed is called data block browsing and editing. Deep Learning of Oracle block and disaster recovery in special circumstances.1. Compile the connection:CD $ ORACLE_HOME/rdbms/libMake-F ins_rdbms.mk $

This is the 25th lecture, mainly about the basic understanding of blocks and processes. 1. One of the simplest blocks:Set serveroutput on -- open the output option. If it is off, put_line () has no output.BeginDbms_output.put_line ('hello

It's a bit embarrassing. It's far from taking 2nd lectures. This lecture mainly explains functions, packages, and variables.1. Differences between functions and processes1) function: return a specific value, usually one;Procedure: perform specific