Oracle

Solution after the Oracle listener is suspended by the optimization master: An error occurred while starting the oracleorahome90tnslistener service. Information: The oracleorahome90tnslistener service cannot be started on the local computer,

In Oracle 10g, we may often encounter OEM problems that cannot be used normally, but the causes are different. In the end, most problems can be solved through the emca command, for more information, see online help. The following describes some

1. Test Environment SQL> select * from v $ version; BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.1.0-Prod PL/SQL Release 10.2.0.1.0-Production CORE 10.2.0.1.0

After several days of unremitting efforts, LINUX has been reinstalled three times, and ORACLE has finally installed ORACLE10g R 2 (64-bit) in LiNUXAS4 update6 x86_64. I will share with you the installation process below, so that more people will

Recently, I want to migrate the oracle database from my computer to the computer in the data center. I first adopted the dmp/imp method, but I found that it was too troublesome to export many users. Therefore, we decided to adopt the cold

Today, I am using orcle and found that the system prompts the account to be locked when logging on to the system account. Later I checked the information and found the solution to the problem. The solution is as follows: Microsoft Windows [version 5.

In fact, in addition to the commonly used asmcmd command to manage the asm disk group, you can also manage it through ftp. By default, the ftp port is disabled. The specific operation steps are as follows: Db1-> sqlplus/as sysdbaSQL> @?

SQL codeUpdate test set x = 1 where y = 1;Delete from test where y = 1;It is divided into two steps:1. Locate the data rows that meet the Update Conditions in the table based on the where condition;2. Update the x value of the data row found in step

Today, I want to share with my friends how to read and write Video data from BLOB fields in Oracle. The reason is that when I used ORACLE to back up data, I accidentally deleted the control file of the database instance, as a result, project data

What do you mean by Cost Mr. the Lewis code is as follows, and the comments are slightly modified: [SQL]/* Script: first_rows. SQL Author: Jonathan Lewis Dated: June 2002 Purpose: problems with specified optimisation Last tested 10.1.0.4 9.2.0.6 8.1.

PLSQL displays garbled characters-Chinese condition query failure solution: PLSQL garbled characters are caused by inconsistent character set encoding on the ORACLE server and PLSQL server. Similar garbled issues can be considered from whether the

Case when expression 1. case when expression has two forms -- Simple Case function CASE sex WHEN '1' then' male 'when' 2' then' female 'else' other 'ends -- Case search function CASEWHEN sex = '1' then' male 'When sex = '2' then' female 'else'

Oracle self-study (1) 1. query statements [SQL] select * from TF_ B _TERM_PREPMG_LOG; select * from TD_M_TERM_PRICE; select * from TF_ B _CEN_TERM_MANAGER_LOG, Region; // query select * from region together with two tables; select * from region;

Oracle removes duplicate table data. During the project process today, duplicate records exist in the Database Table, and duplicate data needs to be removed during display. After half a day, rank () over (partition by grouping field order by sorting

Use dbms_metadata.get_ddl to view DDL statements. When you want to view a table or table space DDL, you can use the dbms_metadata.get_ddl package to view the DDL statements. The get_ddl function detailed parameter GET_DDL function in the

User-managed on-premise database cloning Oracle on-premise database replication or cloning is often used to provide a test or development environment. There are multiple methods to generate a clone database, such as using the cold standby mode for

Oracle sqlloader notes command: Sqlldr userid = username/pwd control = file log = logfile load data -- syntax keyword infile 'filename' -- data file for data import. The default format is. dat. If you want to import data from multiple files, then

Introduction to Oracle Materialized View: the Chinese name of MView is Materialized View. The difference between MView and common View is that MView manages storage data and occupies the physical space of the database. MView results are saved in a

Oracle and DB2 basic operation commands 1. ORACLE1. basic commands 1. lsnrctl status-view the listener status-2. tnping orcl to view the connection status (orcl indicates the name of the listener) 2. restart the oracle database and listener in linux:

ORACLE downgrade Import and Export we often need to import and export in different versions of the database, if you import from a lower version to a higher version, generally the problem is not big. however, importing a version from a higher version