oracle data integrator documentation

According to Oracle's documentation, the data pump in different ways to export imports, performance can be significantly different, this time just have the opportunity to test, migration table space, direct path, external table, and database chain export, import performance differences. First check that the table space of the source database satisfies the self contained condition: Sql> EXEC Dbms_tts. Tran

Oracle tableInserting time-formatted data into an Oracle table is a relatively troublesome matter, either you write your time value strictly in accordance with the time format of the current session, or you use a conversion function to customize the format of the time data. There are two time-related conversion functi

According to Oracle's documentation, the data pump in different ways to export imports, performance can be significantly different, this time just have the opportunity to test, migration table space, direct path, external table, and database chain export, import performance differences. This test external table export, import method. First clear the user and tablespace imported from the previous article,

Oracle manages and presents database information through a data dictionary, which typically stores the metadata of the database and is the database's database. The commonly mentioned data dictionary consists of 4 parts:Internal RDBMS (x$) tables, data dictionary tables, dynamic Performance Views (v$), and (static)

Oracle Data Dictionary x $ kvit and x $ kcvfh learning x $ tables are the core parts of the database. These tables are used to track internal database information and maintain normal operation of the database. The x $ table is encrypted and is not described in the oracle documentation.

>select column_name,comments from Dict_columns where table_name= ' user_indexes '; And so on, you can easily know the detailed name and interpretation of the data dictionary without looking at Oracle's other documentation. The following categories list the query usage methods for some Oracle users ' common data dicti

Recently, when studying the V$latch view, I found a data type that I had never seen before. The data type of the Addr property in V$latch is Raw (4|8) and the data type of the addr attribute in v$process is also raw (4|8). So we looked at Oracle's SQL Language reference documentation, as described in the following docu

Problem:1. How are data types such as number, Char, varchar, and date stored in Oracle? What is a byte stream?2. What is the length of the byte used by various data types? Select dump (1), dump (123456), dump (-123456), dump (1234567890123456) -- integer-- Select dump (123456.789), dump (-123456.789), dump (1.234567890123456789e15), dump (1234567890123456789012

Processing_state CHAR (1) Processing_status CHAR (1) Base_object_type VARCHAR2 (30) Base_object_name VARCHAR2 (30) Base_object_schema VARCHAR2 (30) Parallelization number Unload_method number Granules Number SCN number Domain_index VARCHAR2 (30) Domain_index_schema VARCHAR2 (30) Grantor VARCHAR2 (30) NAME VARCHAR2 (30) value_t VARCHAR2 (4000) Value_n number Is_default number File_type number User_directory VARCHAR2 (4000) User_file_name VARCHAR2 (4000) file_name VARCHAR2 (4000) Extend_size numb

For more details on deploying data for RDS, importing and exporting, see [official documentation].To deploy data for RDS, it is important to note that the RDS database only has 1521 ports open, so all operations can only be done through a 1521 port database connection.1 Exporting dataIn the source database:--查看数据库目录：select * from dba_directories t;--数据导出(操作系统命令行执

According to Oracle's documentation, the data pump in different ways to export imports, performance can be significantly different, this time just have the opportunity to test, migration table space, direct path, external table, and database chain export, import performance differences. This test network_link how to import. First clear the user and tablespace imported from the previous article, and re-est

Tags: Hadoop sqoopFirst, using Sqoop to import data from MySQL into the hdfs/hive/hbaseSecond, the use of Sqoop will be the data in the Hdfs/hive/hbaseExportto MySQL 2.3 NBSP; hbase data exported to MySQL There is no immediate command to direct data from HBase to MySQL, but you can export

According to Oracle's documentation, the data pump in different ways to export imports, performance can be significantly different, this time just have the opportunity to test, migration table space, direct path, external table, and database chain export, import performance differences. This article introduces the test environment. Both the source and target database versions are 10.2.0.3, there is no ver