Oracle

Oracle job introductionMain scenariosPerform related operations on the background at regular intervals. For example, save the data of one table to another at every night, and 2. Back up the database at regular intervals. It is difficult to start

  The next step is to switch to the oracle user and run the installation. Based on past experience, you only need to run the installer on shell su-oracle. This time I encountered a problem in suse. This is the second problem encountered during this

View which table is lockedSelect B. owner, B. object_name, a. session_id, a. locked_modeFrom v $ locked_object a, dba_objects BWhere B. object_id = a. object_idCheck which session is causedSelect B. username, B. sid, B. serial #, logon_timeFrom v $

OAF provides two methods of Hot Keys.Mnemonic (Common) Accelerator Keys: generally used in the Prompt of the button.Numeric (Application-Specific) Accelerator Keys: generally used in menus or links. Mnemonic (Common) Accelerator KeysYou can add "&"

SQL> Select count (*) from v $ session where status = 'active ';COUNT (*)----------20SQL> Select count (*) from v $ session;COUNT (*)----------187SQL> show parameter processes;NAME TYPE

I. Check the environment1.1 run the pre-check script and snapshot scriptWhether the database has data types not supported by OGG1.2 check the space for archiving logs on the production end.1.3 check the actual space occupied by the production

Fault description: lsnrctl does not respond after stat, while SQLPLUS is normal:[Oracle @ wlserver3 ~] $ Lsnrctl statLSNRCTL for Linux: Version 10.2.0.1.0-Production on 13-SEP-2011 23:16:11Copyright (c) 1991,200 5, Oracle. All rights

SQL code-- SubmitSelect * from reportnobenefit;Variable job1 number;BeginDbms_job.submit (: job1, 'pkg _ JOBS. CALC_NOBENEFIT; ', sysdate, 'trunc (last_day (sysdate) + 100 ');End; -- RunBeginDbms_job.execute (222 );Commit;End; -- RemoveVariable job1

Environment: Oracle 11Gr1 + Linux Redhat 5After the machine is restarted, the following error occurs when the Database Listener is started:TNS-12542: TNS: address already in useTNS-12560: TNS: protocol adapter errorTNS-00512: Address already in

Oracle10.2 dblink impd: copying data from different users in the same database and copying data from different users in the same database 1. authorize the user to import tables; SQL> grant exp_full_database to system; SQL> commit; 2. create dblink;

How to start, disable, and restart oracle listeners in linux is a basic task for DBA to start and close oracle listeners, however, the Linux system administrator or programmer sometimes needs to perform some basic DBA operations in the development

Exp-imp for migration of different oracle tablespace Method 1: -- 1. Modify the tablespace name (account: sys/oracleas SYSDBA logon) alter tablespace CICHR rename to CICHR_BAK;alter tablespace USERS rename to CICHR;  -- 2. Export the user expcichr-20

Some errors encountered when installing Oracle 11.2.0.2.0 for RedHat5.4 _ 32bit -- analyze and solve some problems that have occurred recently when installing Oracle 11.2.0.2.0 for RedHat5.4 _ 32bit. 1. After the database software is installed, use

Tips for Oracle database query I. Cancel duplicate rows. For example, in the personnel management system, there is a basic employee information table. This table may contain fields such as department, position, employee name, and ID card number. If

Partition index (1) 1. Partition index the partition index simply divides an index into multiple segments. By dividing an index into multiple segments, you can access smaller segments (faster) and store these segments on different disk drives (to

Oracle monitoring protection today is, not just after, it should be, today my colleagues failed to perform security reinforcement on the database, my buddy did the same experiment and the result still failed. So far I don't know why. I am sorry to

Oracle cycle and process example: -- Create table t_test (test_id varchar2 (100), test_name varchar2 (100); -- Query select * from t_test; truncate table t_test; -- Declaration process -- insert test data with loop declare v_index number: = 1; begin

Restore archivelog usage 1. Back up all archived log files RMAN> backup archivelog all delete input;Starting backup at 02-JUN-08current log archivedusing channel ORA_DISK_1skipping archive log file D:\ARCHPAUL\ARC00001.001; already backed up 1

How to Improve the query statistics speed of ORACLE databases when developing large-scale oracle database systems, we have carried out some physical designs on the database in line with the principles of security and efficiency, in light of the

Oracle large data volume query actual analysis Oracle Database: just made a 50 million data extraction, the current table is still performing the insert operation, hundreds of data entries per minute. This table is partitioned by time and by month.