oracle change data capture tutorial

Non-Data guard patch installation tutorials refer to the [Oracle] cpu/psu patch installation tutorial, where Data Guard requires primary and standby to be patched at the same time, so the steps are more complex and the main steps are as follows: Stop log transport service at primary; Close the standby database, stand

For example, there is a shortage of hard disk space in a development library recently. A new disk is added to prepare to move all the data files to the new disk.First, list the data files to be moved. The data files belong to the tablespace. The following table spaces can be used in different categories:Control FileSystem tablespaceUndo tablespaceTemporary tables

PHP migrates data from Oracle to Mysql instances. Why migration? First of all, considering the operation cost, using Mysql can save a lot of money. On the other hand, the stability and functions of Mysql are constantly improved and enhanced to meet the needs of customers. Why migration? First of all, considering the operation cost, using Mysql can save a lot of money. On the other hand, the stability and f

If you delete a data file in a tablespace before you oracle10g it, the file will still exist in the database data dictionary, and the file information will not be erased unless you delete the tablespace. But starting with ORACLE10GR2, Oracle allows us to completely delete an empty file without leaving traces. But note: If you add a file to the SYSTEM table space

[Oracle] Data Pump detailed tutorial (1)-Overview starting from 10 Gb, Oracle provides more efficient Data Pump (expdp/impdp) for Data import and export, old exp/imp can be used, but it is not recommended. Note: expdp/impdp AND ex

For non-Data Guard patch installation tutorials, refer to [Oracle] CPU/PSU patch installation detailed tutorial. Data Guard requires both Primary and Standby patches, so the steps are more complex, the main steps are as follows:1. Stop the log transmission service in Primary;2. Shut down the Standby database, patch the

We all know that.VARCHAR2 is also a recommended type for Oracle companies. But there is a problem with VARCHAR2: The maximum is only 4,000 characters, which is equivalent to 2000 characters. If the value of a character in your program is greater than 20,002 characters, you cannot satisfy the requirement with VARCHAR2. At this point, you have two choices, one for multiple VARCHAR2, and the other for LOB fields. Here we take a look at the second approac

1. The control file contains the data to be loaded. First, create a test table. SQL> showUser USERIs"ING" SQL>CreateTableDept 2 (deptno number (10)ConstraintDept_pkPrimaryKey, 3 dname varchar2 (20 ), 4 loc varchar2 (20 )); The table has been created. Create a control file (including the loaded data) [Oracle @ linux sqlldr] $ pwd /U01/sqlldr [

If you delete a data file in a tablespace before Oracle10g, the file will still exist in the Database Data Dictionary. Unless you delete the tablespace, the file information will not be cleared. However, from oracle10gr2, Oracle allows us to completely delete an empty file without any trace. But note: if you wantSystemIf a file is added incorrectly in the t

I deleted the database by mistake. The boss was very upset. I had to recover the database within 30 minutes. In a hurry, I wrote a stored procedure, which is suitable for deleting the table on the day of recovery without remembering the table name. I deleted the database by mistake. The boss was very upset. I had to recover the database within 30 minutes. In a hurry, I wrote a stored procedure, which is suitable for deleting the table on the day of recovery without remembering the table name.

Starting from 10 Gb, Oracle provides more efficient Data Pump (expdp/impdp) for Data import and export. The old exp/imp can also be used, but it is not recommended. Note: expdp/impdp AND exp/imp are incompatible. In other words, exp exported files can only be imported using imp, and expdp exported files can only be imported using impdp. Key Points of migrating 11