oracle data integrator tutorial for beginners

Php connects to the oracle database and queries data in the oracle database. Php connects to the oracle database and queries data. This article describes how to connect php to the oracle database and query

why migrate? First of all, from the operational cost considerations, with MySQL can save a lot of money. On the other hand, the stability and function of MySQL are constantly improved and enhanced, which can basically meet the needs of customers, such as support multi-node deployment, data partitioning and so on. And MySQL is easier to use than Oracle. This is why customers are required to migrate existin

Use PHP to manipulate Oracle LOB data. Source: anyone who has used Oracle in the IT computer tutorial knows that there is a data type in Oracle called VARCHAR2, which is used to indicate an indefinite string. VARCHAR2 is also reco

to resolve it:1, error code: ORA-1254, the listener is not started or the listener is corrupted.If the listener does not start, the service Oracleoradb11g_home1tnslistener is started in the system service;If the listener is corrupted, then configure a listener using the listener configuration in the Net Configuration Assistant Tool Wizard (you need to delete the original listener).2. When connecting, use the service name instead of the SID.3. Error code: ora-12154,

Oracle Tutorial: Move all data files. Recently, there is a shortage of hard disk space in a development library. A new disk is added to move all the data files to the new disk. Oracle Tutorial: Move all

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

[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

The following is the data Guard CPU/PSU patch installation method for a detailed analysis of the introduction, the need for friends can refer to the next Non-Data guard patch installation tutorials refer to the [Oracle] CPU/PSU patch installation detailed tutorial, where Data