Oracle

First look at a conversation: Cainiao asked: I set local_listener = 'listener1' In the parameter file, and an error is reported when the database is started. SQL> startup ORA-00119: Invalid specification for system parameter local_listener ORA-00132

sys@ORCL> select recid,sequence# from v$log_history; RECID SEQUENCE#---------- ---------- 1 1 2 2 3 3 4 4 5 5 6 6 7 7

(I) daily work ① Check alert. Log ② Confirm the environment ● Whether the database instance works properly ▼ PS-Ef | grep ora _ Explain select status from V $ instance ● Whether the listener works properly ▼ LSNRCTL status ● Whether the

SenseIt is difficult to translate Cardinality into a base number and mislead technical engineers! I think the translator who initially translated the word did not understand the meaning of the word itself, so the dictionary will mislead many people.

LargeOutline: LSNRCTL> helpThe following operations are availableAn asterisk (*) denotes a modifier or extended command:start stop status services version reload

Environment: idle> select * from v$version;BANNER----------------------------------------------------------------Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - ProdPL/SQL Release 10.2.0.1.0 - ProductionCORE 10.2.0.1.0

Excerpt: Oracle --- synonym, sequence, View   /* ===================================================== ======================================= *//* Synonym: product_define *//* ===================================================== ===================

There are three ways to create a database: 1: use ORACLE dbca (Database Configuration Assistant) to create a database 2: Create a database manually (this is complicated and requires manual parameter configuration) 3: Use Oracle managed filed to

Oracle version for REM: 11 GBTo adjust the version and database Sid, right-click the script file and click Edit to modify the values of the orahome and orasid variables below.RemRem ----- gorgeous split line ------@ Echo offSet orahome =

Every DBA in the Process of database management should inevitably encounter all kinds of errors (ORA-1547, ORA-904, ORA-1578 ......). Some errors are often called "classic errors" by Oracle DBAs due to frequent and complex causes ". The ORA-3113

In the Oracle database, there is a function fun_sin_shift_to_group parameter which is indate in date, inshift in integer, And the return value is varchar2. You can use oracleclient to pass Parameters and obtain the returned values. This is okay (the

Oracle to_date usageDescription of date format parametersD. day of the weekThe name of day, which is filled with spaces to 9 characters.Day of DD monthThe day of the year in DDDShort Name of Dy dayWeek of the Year of the iw iso StandardFour-digit

In normal Oracle databases, we generally use GUI to create databases. Therefore, it is relatively difficult to manually create databases. This is also a concern for OCM tests, the main version is 9i and 10g. 1.

Major work of the database administrator (DBA) Start and close a database1) Start the database$ SvrmgrlSvrmgr> connect internal (instance startup)Svrmgr> startup 2) shut down the database$ SvrmgrlSvrmgr> connect internalSvrmgr> shutdown

My problem is as follows: There is a table t, field c1, c2, c3, c4, which requires a random selection from the repeated values of c1 to form a result set. How to implement it? For example, the record is as follows: Aa1 bb1 maidAa1 bb2 cc2 dd2Aa1 bb3

Reproduced in: http://www.cnblogs.com/huanghai223/archive/2011/07/07/2100104.html Author: Diamond tears Oracle creates tablespaces, creates users, authorizes and grants access to objects, and views permission sets. Create tablespace tab_ckbdata

Oracle Transaction Management A transaction contains one or more SQL statements. It is a logical unit of work (atomic unit ).The SQL statement that starts the first execution of a transaction and ends with a Commit, Rollback, or DDL statement.Note:

I. oracle excel Export Method 1: the simplest method is to use the tool plsql dev Run File => new Report Window. Write the required SQL statement into the SQL tag. Click execute or press the shortcut key F8 to obtain the query result first. On

Lv_ SQL: ='Insert into etl_sucess_amountSelect seq_ OS _etl_amountid.nextval as amountid, 1, amount_data, amount_hour,Serviceid, portalid, mouduleid, actionid, reserve1_id, reserve2_id, reserve3_id,Reserve4_id, amount, amount_timeFrom(SelectTrunc

In the Execution Plan of the partition, it indicates that the field has different partition operations, including two PARTITION RANGE ITERATORPartition range single The cost of ITERATOR is higher than that of SINGLE. It seems that ITERATOR is