Oracle

MyBatis BULK INSERT data to Oracle Report "Java.sql.sqlexception:ora-00933:sql command does not end correctly" error resolutionOracle BULK INSERT uses the Insert all into table (...) into table (...) VALUES (...) select * from dual; Statement to

Go to: http://blog.163.com/aner_rui/blog/static/12131232820105901451809/2. Keep One (this should be what most people need ^_^)Delete hzt Where ID not in (the Select Max (ID) from Hzt Group by Title)Note: The maximum one record for the ID is retained

update data for another table with data from one table in OracleCategory: Sql/plsql2012-05-04 15:49 4153 People read Comments (1) favorite reports OraclemergesubqueryinsertnullThere are two tables that update Val in the table TAB1 with the ID

1 --Create a table2 Create TablePerson (3Id Number Primary Key,4Namevarchar2( +),5 Birth date6 );7 --Create a sequence8 Createsequence Person_id_seq9Increment by 1TenStart with 1 OneNomaxvalue--do not set the maximum value ANocycle--keep

# coding=utf-8__author__ =  ' jspdba ' u ' read Oracle notes ' import cx_oracle     #  Import Module Sql=r "" "select * from user_col_comments t where 1=1and  t.comments is not nulland t.table_name =  ' @TABLE ' "" "words=[" Custom "," Code ","

Transferred from:http://jingyan.baidu.com/article/f54ae2fccda68d1e93b84942.htmlExample:--Class tableCREATE TABLE number VARCHAR2 (not NULL);--Add a primary key to the Tclass tableALTER TABLE ADD CONSTRAINT PRIMARYKEY(cl_id);---student tableCREATE

All ancestor parent directories or all subordinate subdirectories that can be started by using connect By/prior/start with the specified dataHere are two simple examples to learn two ways to use.Method One:SELECT DISTINCT t.catalog_id,

Chen Kocha: http://blog.csdn.net/u013474104/article/details/44279309================1.spring Support for Database interviewWhen we develop the persistence layer. We face a variety of options. For example, use JDBC, Hibernate, Java Persistence API,

Environment: Redhat 5.9 64-bit, Oracle 10g1.To modify the Dbstart script:$ VI $ORACLE _home/bin/dbstart#ORACLE_HOME_LISTNER =/ade/vikrkuma_new/oracleoracle_home_listner= $ORACLE _home2.Modify the/etc/oratab to the following format:$ vi/etc/oratabSID:

Summarize:1. Three configuration files are placed in the $oracle_home\network\admin directory.2. Sqlnet.ora determine the parsing method3. Listener.ora on Sid_name, commonly used for JDBC access, corresponding error code is 125054. Tnsnames.ora on

I wrote a stored procedure that used features, some features to_date (Datefrom, ' yyyy/mm/dd '). After the discovery data insertion error is performed, the data is inserted into "0001/9/14".Feeling baffled, I don't know why this data, after

One: Recovery of tablesFor mistakenly deleted table, as long as not using purge permanent delete option, then recover from the Flashback table area hope is quite large. The general steps are:1. Query the deleted table from flashback tableSELECT *

1. Set Linux system parametersA. Modify the Linux kernel parametersVi/etc/sysctl.confKernel.shmmax = 1073741824/kernel.shmmax = 1024*1024*ram (M)/2 (at least), that is, the numeric size is half of physical memoryKernel.shmmni = 4096Kernel.shmall = 20

1, database character setThe database character set consists of two character sets: the database character set and the national character set, which are specified when the database is created.1.1, querying the character set of the current

1. There are three flash back technologies, namely, flashback database, flashback query, flash back delete.The flashback database restores the database to a certain point in time; The flashback query is the history of the query table, and the

The solutions are:1. Temporary modificationAlter session set nls_date_format= ' Yyyy-mm-dd HH24:MI:SS ';This method only can change the date display format in the current session, and when a session is re-established, the command must be re-executed.

Convert null values to actual valuesCreate a test table: Create or replace view v asselect null as c1, null as c2, '1' AS c3, null as c4, '2' AS c5 FROM dualUNION allselect null as c1, null as c2, null as c3, '3' AS c4, '2' AS c5 FROM dual; SELECT *

JDBC (using Eclipse to operate on Oracle databases) basic operation set, jdbceclipse JDBC: JDBC (Java Data Base Connectivity, java database connection) is a Java API used to execute SQL statements. It can provide unified access to multiple

Oracle 11g Release 2 Basic login operations after new installation, oracle11g First, you can select either desktop or server. The desktop class is relatively simple and requires no configuration. During installation, you are prompted to enter the

ORACLE restricts some IP addresses and malicious operations on important tables1. Problem Description The default oracle account has no restriction on ip addresses. The hidden danger is that if I know the username and password of the oracle account,