Oracle

Oracle uses Sequence and triggers to automatically increase IDs. Many companies use Oracle databases and require automatic increase of IDs. However, there is no ready-made method to use auto_increatment like SQL Server. Under www.2cto.com, I wrote a

Using (dynamic statement) [SQL] -- create test table create table t01 (id integer, name varchar2 (10); www.2cto.com -- create test data insert into t01 (id, name) values (1, 'A'); insert into t01 (id, name) values (2, 'B'); insert into t01 (id, name)

There are a lot of learning materials on the Internet. Despite my determination to study oralce, there are still countless learning materials I can find. The popular fully open-source video "Han shunping-playing oralce" is almost done, take notes

Processing of Oracle string segmentation 1. create or replace type t_ret_table is table of varchar2 (20); 2. use a custom function to implement 1. Use the function to return an array. using create or replace function f_split_string (var_str in

Oracle custom function accumulation 1. Determine if it is a number www.2cto.com create or replace function IS_NUMBER (string VARCHAR2) return integer is begin if (LENGTH (TRIM (TRANSLATE (string, '+ -. 0123456789 ', '') is null) then return 1; else

I installed Oracle10g on windows2008 after porting Oracle10g to Windows. After some tossing times, I found that it was impossible to follow the normal method. The current situation is that there is no installation package for 10.2.0.3 for vista.

Oracle re-build EM: The oracle11gx64 on wi7x64 cannot be accessed by IE8, and I re-build EM, but it still cannot. After restarting the OracleDBConsoleorcl service, I can use Firefox to access the address https: // hostname: 1158/emAfter the host

Oracle default archive log Java code oracle archive log www.2cto.com SQL> archive log list; database log mode Archive Mode Automatic archival Enabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 1503 Next log sequence to

Three Common oracle functions TRIM, TRUNC, and DECODE are used. Today, three functions TRIM, TRUNC, and DECODE are met. The experience is recorded for future reference. 1. TRIM function: used to remove spaces at the beginning and end of a string

With the continuous development of software technology, system performance becomes more and more important.System performance is measured by system response time and concurrency.There are two possible causes for poor SQL statement performance:1.

Oracel SQL _TRACE excerpt SQL _TRACE is a powerful auxiliary diagnostic tool provided by Oracle for SQL tracking. SQL _TRACE is a very common method in daily database problem diagnosis and solution. Www.2cto.com 1. enable trace SQL> alter system set

Oracle parameter-based cursor declare cursor mysor (proname varchar2) isselect * from sys_pro_monitor where pro_name = proname; c_row mysor % rowtype; begin open mysor ('Pro _ RPT_KPI '); loop fetch mysor into c_row; exit when mysor % notfound; dbms_

The method for updating the current table in the oralce trigger. This article describes two problems: 1. The difference between the update trigger before and the after. 2. After A field in table A is updated, the trigger triggers the execution. In

Oracle parses xml strings using stored procedures. Background: There are two data tables in the database: t_xml and t_parse. The former is to store the main nodes in the xml document into the para_name field as strings, the latter is used to parse

Oracle creation trigger call with parameters stored procedure Background: when inserting data into a data table, the defined stored procedure is called to parse the inserted data in xml format. The Stored Procedure contains parameters. solution:

How to obtain the Java code www.2cto.com update DIM_TIME f set f. firstday_of_week = case when f. full_date

Linux installation of Oracle 10g client (graphical interface) operating system version: redhat-release-5Server-5.4.0.3 www.2cto.com oracle Client Version: 10201_client_linux_x86_64.cpio.gz 1, install the following system package (installation

Frequently Used commands for Oracle Database imp and exp: www.2cto.com 1. import Data command: imp userid = fkprod/fkprod full = y file = xxx. dmp 2. export Database object command: use tools ---> export user object to export data tables only.

Oracle batch processing import/export data errorBatch file 1: exp manualdb/manualdba @ DB01 file = D: \ orabak \ CC_ORDER_BUSINESS.dmp tables = (CC_ORDER_BUSINESS, CC_ORDER_ B _AREA) batch file 2: imp statdb/statdba @ db01 file = D: \ orabak \

Oracle Parameter Interpretation parameters: optimizer_index_cost_adj www.2cto.com 1 and optimizer_index_cost_adj have a great relationship with db_file_multiblock_read_count. We recommend that you search for previous posts. After