Oracle

Troubleshooting of common Oracle Problems ---------------------------(No Logon)---------------------------ORA-12541: TNS: No listenerProgram ---------------------------OK--------------------------- 1. CMD-> Run Command Line-> services.

After installing Oracle with a newcomer today, open the database to view the data in the table and find that all the data in the table is "dependent.This is not the case before. So I checked it and learned that it was a character-level issue in the

The database uses a lock to ensure that at most one transaction can modify a given piece of data at any given time. Essentially, it is the lock mechanism that makes concurrency control possible. Oracle Blocking Policy:1. Oracle locks data at the

1. User View the default tablespace of the current user: SQL> select username, default_tablespace from user_users; View the role of the current user: SQL> select * From user_role_privs; View the system and table-level permissions of the current

1. Select nvl (c_remark, CHR (0) into: srateFrom t_comm_codeWhere c_cde = trim (: stext2) and rownum = 1; Nvl is a function that returns the value of the second parameter if the first parameter is null. Otherwise, the value of the first parameter

| Connection or async string1 | string2Concat same as Concat (string1, string2)Initcap upper the first letter of all words in the string. initcap (string1)Instr: locate the substring, index from 1 instr (string1, substring2)Length: returns the

Differences in Oracle In SQL Server:Essentially, there is no difference. Only functions are as follows: only one variable can be returned. The stored procedure can return multiple objects. Functions can be embedded in SQL and called in select, but

 About Instant Client Oracle Instant Client is a simple client provided by Oracle and supports multiple platforms. It can be downloaded from the Oracle website.Http://www.oracle.com/technology/global/cn/software/tech/oci/instantclient/index.html

This article describes how to export a database from a Linux server. Next, deploy the same library on a newly installed 64-bit Windows 2003 host. So we have all the procedures from installing Oracle> creating an instance> importing a database.

If the system data is not updated, check the Oracle scheduled task. It is estimated that the task is not executed. The next_date is changed to 4000/1/1, and the broken is selected. Select * From user_jobs: the number of failed tasks of this task

The title is very personal, and finally crashes .. In the afternoon, an oracle instance is created on the server (win2003 64bit) and the service name in tnsname. ora is configured locally on the client. Testxgd =(Description =(Address =

Oracle's analysis function over and window function eg: Related parsing: Table t_pi_part field ID code namevalue 1 222 avalue 2 222 bvalue 3 333 C add Row labels to the same part code, sort select P by ID. *, row_number () over (partition by P. code

1 -- ------- 2 Same commands as SQL2000 3 Create tablename 4 Delete table drop Table Tablename 5 There is also alter Insert   Into Update and so on. 6 To delete a table, directly Delete tablename. 7 --

I am new to the company and can only learn from scratch. There is no way. Now I will take my notes. Using system. Data; Using system. Data. oracleclient; ...... private void button_click (Object sender, system. eventargs e) { string

C # The string connecting to the Oracle database is as follows: Data Source = gdbzh; user id = zhangf; Password = guangy; It should be pointed out in particular what is the value of data source and where to obtain it (the last two can be seen

The table that PD imports to Oracle is not working properly and the error "ORA-00942 table or view does not exist" is reported Cause:Note the quotation marks and the Case sensitivity of table names when using PD and Oracle connections. scripts

You need to back up the Oracle database automatically on a regular basis and want to use the simplest tools and methods. Timing: Use the scheduled tasks that come with windows to complete. Backup: Use the Oracle export tool export. The command

Create user SQL> create user Feng identifiedF123; The user has been created. You are not authorized to use the newly created user connection report. SQL> conn Feng/f123 Error: ORA-01045: User Feng lacks create sessionPrivilege; logon

Today, I downloaded the Oracle 9i installation on the official Oracle website. It is not easy to install. To sum up, pay attention to the following issues: 1. The installation file cannot be placed in a path with a Chinese name. (An error

When Oracle is uninstalled, it cannot be deleted. I want to reinstall the system. In my work, I have summarized the following methods and hope to help you.Note: the path of the oracle source program must be an English path; otherwise, an error