Oracle

I don't know how to catch this exception, it's not of the otl_exception type, but when debugging, it was found that it was indeed "ORA-22990: Lob locator could not extend transaction processing ". Set the otl_connect objectAutomatic

Numeric functions: ABS (m) Absolute Value of mMoD (m, n) m remainder after N DivisionPower (m, n) M's n powerRound (M [, N]) the value of M rounded to N digits after the decimal point (N defaults to 0)Trunc (M [, N]) m truncates the value of N

View the products used in this article Important: This article contains information about how to modify the registry. Before modifying the registry, you must back up the registry and know how to restore the Registry in case of a problem. For more

As shown in the following table: srs_ B _cw_testCity people makeGuangzhou 1Guangzhou 2 BGuangzhou 3 CShanghai 4Shanghai 5 eGuangzhou 6Shanghai 7 E Achieve the following resultsCity people makeShanghai 16 AEGuangzhou 12 ABC We will learn it step by

In large-scale project development, common databases are Oracle databases. However, an Oracle client requires a large disk. After installation, two functions are basically used: TNS Configuration Service name and sqlplus. During development, toad

I. theoretical part The Materialized View of Oracle is a database object that includes query results. It is a local copy of remote data or is used to generate a summary table based on the sum of data tables. Materialized View stores data based on

 1. Instructions on using expdp/impdp on the client   Some documents about Oracle expdp/impdp commands have been prepared. The links are as follows: Comparison between exp/IMP and expdp/impdp and some optimization items in

 1. Instructions on installing virtualbox1.1 vbox Virtualbox is a virtual machine system software developed by innotek, a German software company. virtualbox not only has rich features, but also has excellent performance. It is even more open-source

-- ====================================== -- Oracle listener log configuration and management -- ====================================== The Oracle listener is a server program used to listen to all requests from the client and provide database

Get table name:  Oracle's user_talbes is used to record user table information. Select * From user_tables  Obtain the fields of a table: User_tab_cols records the column information of the User table. The following is what others

① Two methods used: 1. Specify to use full table scan: % _ hints Oracle 'full (table_name )' 2. Specify the index: % _ hints Oracle 'index (table_name index_name )' For other Oracle hints writing methods, refer to this article: Oracle hint

Import c: \ oraclexe \ app \ oracle \ product \ 10.2.0 \ Server \ JDBC \ Lib \ ojdbc14.jar to the project attribute library in eclipse PackageJDBC;   ImportJava. SQL. connection; ImportJava. SQL. drivermanager; ImportJava. SQL. resultset; ImportJava.

Recently I was reading a buddy's optimization SQL and used several special hint, but I was always puzzled by this, so I did some tests on this issue (refer to some materials) 1. no_unnest, unnestUnnest is called the subquery expansion. As the name

1. Modify the database connection section in the file... Atlassian \ conf \ Server. XML as follows:Auth = "Container" type = "javax. SQL. datasource"Username = "jirauser"Password = "jirapwd"Driverclassname = "oracle. JDBC. Driver. oracledriver"Url =

Release date: Source: collected: In large commercial applications, Remote Disaster Recovery and backup of data are very important and necessary. Based on my practical experience, I designed a set of simple methods to implement remote

In a high-availability system, it is difficult to change the definition of a table, especiallyIn a 7 × 24 system. The basic syntax provided by Oracle can basically meet general modification requirements. However, if you change a common heap table to

Error: ORA-12154: TNS: unable to process service name The cause of this error is different from that of Baidu. My client programs can be executed normally in different directories, however, an error occurs in one of the directories, so I think

Paging is one of the common functions in development, especially the Repeater paging, which collects some information and finds that the Repeater paging is usually divided into two types. 1. False paging (PagedDataSource implementation) 2. Real

1. experiment environment: Operating System: Windows 7 Memory: 2 GB CPUs: 2.10 GHz Virtual Machine: Vmware Server 1.0.10 Operating System: Oracle Linux Enterprise 5.4 Database: Oracle 10g2. Installation

Oracle 8i RAC database common error diagnostics highlights ORA-1652 to ORA-1655 Simply put, the ORA-165X error message means that the tablespace does not have enough space to allocate, so an error is reported. These errors include a ora-1652, A ora-1