Oracle's client has two executable files under the bin, named Exp.exe and Imp.exe, respectively.They are used to export and import data.Full LibraryExport:exp User name/password @ database name full=y file=c:xxxx.dmp owner= database userImport:imp
ASP. MVC4 + Oracle + Easyui + Bootstrap Chapter I-Operational data and validationThis article link: http://www.cnblogs.com/likeli/p/4234238.html1, about HtmlHelper and UrlhelperBecause the goal of most Web requests is to send HTML code to the client.
Grant CONNECT,RESOURCE,DBA to user;Connect role: --is the typical right to grant the end user, the most basic Create Session--Set up sessions Resource role: --is granted to developers Create CLUSTER --Build a
Trigger implementation function: When inserting a row of data into table A, insert a related data into table B at the same time.---Create a test sample tableCREATE TABLE person (PID number (10));Create table Task (TID number (10));---Create an
The process of 1.sql parsing
Oracle first converts the SQL text to ASCII characters and calculates its corresponding hash value (Hash_value) based on the hash function. The corresponding bucket is found in the library cache based on the
The ability to debug stored procedures is provided in PL/SQL to help you to pre-compile and test stored procedures.
Click the stored procedure you want to debug, right-select test
If you need to see the variables, of course, debugging
Ora01219 database not opened, ora01219 Database
After connecting to the data today, I saw the prompt that the database was not opened, and the service was closed and re-opened. This is still the case. I found the problem only after I found the
Principles and usage of cursor in oracle
Introduction to cursor:
Process query results row by row and access data programmatically
Cursor type:
1. Implicit cursor: an implicit cursor is automatically created when a dml SQL statement is executed
How to merge multiple rows in oracle and Merge multiple rows in oracle
This example describes how to implement multi-row merge in oracle. Share it with you for your reference. The specific analysis is as follows:
When writing SQL statements,
10gR2Clusterware Installation Steps1. Install the Operating System (omitted)Note: I use the OEL 5u5 version here. Because it comes with the environment variable installation package provided by Oracle, It is very convenient to install the Oracle
Let's talk about OracleAll subqueries in one example.
Problem:The employee names, jobs, and salaries that are higher than the salaries of all salespeople are queried.
Analysis:ANY can represent ANY, but this problem requires higher salaries than
Oracle object-oriented and set
1. oracle object-oriented
We all know that SQL is set-oriented, but it is undeniable that there are many places in oracle that reflect the object-oriented thinking. (This is also a sign that major languages share the
Modify the Data Type of the column corresponding to the primary key of an Oracle database table
When upgrading our product from SPC100 to SPC200, because the data type of the database table column has changed, you need to write an SQL script to
Oracle Database row_number () over statistics of the first 15 enterprises, wm_concat (casewhenthen) Row to Column
Basic usage of the ROW_NUMBER () OVER FunctionSyntax: ROW_NUMBER () OVER (partition by column order by column)
For example, row_number
The query for a specific type of data in an oracle table is particularly slow, and no reason is found.
When I look up a table today, it is very slow to query a specific type of data in the table, but the whole table is very fast, and no reason is
Oracleexp exports many tables with the table structure
The requirement is: to export the structure of a specified 3 thousand tables, This is generally the case, but the problem is that the table is very large and won't succeed.
Exp
Record an Oracle10g data recovery event
Facts have proved that I will not die if I don't die. This Oracle crash took me two days, just because I installed some inexplicable Android simulators and uninstalled them again.
After uninstalling the
Restoration Method for 10gClusterwareVotedisk corruptionVotedisk is very important for RAC (10g Clusterware, 11g GI). We call it an arbitration disk, when a node in the RAC cluster fails and the network is disconnected, it determines whether to kick
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