Oracle

Oracle recycle BIN manages oracle10g. After you select and delete from pl/SQL, a table similar to BIN $ nJ5JuP9cQmqPaArFei384g ==$ 0 is displayed. 1. view the recycle bin select * from user_recyclebin; 2. Clear the recycle bin purge recyclebin; 3.

Database Learning (6) -- basic query operations database Learning (5) -- create and update a data table 2 http://www.bkjia.com/database/201305/207493.html In database operations, a developer or user needs to retrieve information in a data table to

[Oracle true 2 series] the initialization parameters are static and dynamic. When learning Oracle, we will find that many Oracle knowledge points are both in pairs. For ease of understanding and memory, I we will make a summary of this series. The

[Oracle problem set 4] ORA-00205 error in identifying controlfile Description: [oracle problem set] is the problem encountered by the master usually operate the database and solution. Statement execution: Indicates An error occurred while operating

Exp/imp three modes-full, user, and table ORACLE databases have two backup methods. The first type is physical backup. This method enables complete database recovery, but the database must run in the recovery mode (the business database runs in the

Oracle materialized view generally uses a materialized view because there are a large number of query summaries and the speed is taken into account. I simply sorted out what I used. First look at the simple creation statement: create materialized

SP2-1503: Unable to initialize Oracle call interface (same fashion 10g and 11g) solution 1. The error SP2-1503: Unable to initialize Oracle call interfaceSP2-0152: ORACLE may not be functioning properly 2 is reported when sqlplus/as sysdba is

Using Stored Procedures to batch export data into multiple csv files (ORACLE) databases has the following table structure: user_info (user_id NUMBER primary key, user_name VARCHAR2 (200) not null, user_age VARCHAR2 (80 ), create_date DATE,

To verify that ORA_CLIENT_IP_ADDRESS is valid only in the system trigger, the function of ORA_CLIENT_IP_ADDRESS returns the Client IP address of the VARCHAR2 type. Generally, it is only used in the system trigger. In fact, it is only valid in the

Many times, oracle only knows the constraints to restrict some data to complete the business logic. However, it is found that there are also application latency constraints. the scenario is as follows: the inventory table uses the product ID as the

There are many application projects for the differences and interchange of oarcle mysql fields. At the beginning, MYSQL Databases can basically meet various functional requirements. As the number of application users increases, the amount of data

[Oracle] Data Guard-Create physical Standby experiment environment Primary: Host: jabdw1241SID: O01DMS0DB_UNIQUE_NAME: O01DMS0Standby: Host: jabdw1242SID: O01DMS0DB_UNIQUE_NAME: O01DMS0DR 1. primary configuration and operations 1) confirm that

Tips for using temporary tables in Oracle stored procedures 1. Oracle temporary table knowledge in Oracle, temporary tables are divided into SESSION and TRANSACTION. SESSION-level temporary table data exists throughout the SESSION, the temporary

Oracle Tablespace Transportation premise: the user must have SYSDBA system permissions for Tablespace transmission. The moved Tablespace is a self-contained Tablespace and should not depend on the existence of objects of external Tablespace objects.

[Oracle]-[sort aggregate]-count and index Oracle10g: create table t_count as select * from dba_objects; create index t_count_ I on t_count (object_id): select count (*) from t_count; select count (object_id) from t_count; select count (object_name)

Oracle deadlock and database connection problems-query the information of the database lock table select do. object_name, t2.username, t2.sid, t2.serial #, t2.logon _ time, t2.MACHINE, t2.state, t2.STATUSfrom v $ locked_object t1, v $ session t2,

How to recycle and drop the space of a table? Q: oracle will not recycle the data blocks occupied by dropping a table, isn't the data that has been deleted logically backed up by RMAN in vain? Is there any way to recycle the space occupied by the

Oracle maintenance tablespace and data file 1: oracle tablespace concept table space is a bridge between the physical disk (data file) of the database and the logical component. The tablespace is used to store oralce database objects such: tables,

Oracle Delete foreign key constraint-Disable constraint-enable constraint execute the statements generated by the following SQL statements to delete all foreign key constraints SQL code select 'alter table' | table_name | 'drop constraint' | |

Three requirements for how to reasonably create an Oracle database index: Creating an index in an Oracle database is relatively simple. However, it is difficult to create an index reasonably. I believe that three appropriate indexes should be