Oracle

When importing data to Oracle today, the following message is displayed: Import started on 2008-7-2 8: 51: 15d:/Oracle/ora90/bin/imp. EXE log = C:/docume ~ 1/admini ~ 1/locals ~ 1/temp/1/plsimp. log File = E:/20080630/20070630 .dmp userid = LZ/LZ

From the design of the Oracle shared pool and the PL/SQL writing method recommended by Oracle, we can see that variable binding has a great impact on performance, how to bind variables in PL/SQL? First, let's take a look at the usage of not using

I have been reading a question and a statistical statement over the past few days.ProgramSuddenly, the data volume is abnormal. I checked the data from the beginning and found that there was no problem with the program and configuration, but the

Oracle , SQL Server null value ( Null ) Judgment SQL Server ReplaceNull:Isnull (ARG, value) For example, select isnull (price, 0.0) from orders. If the price isNullReplace the value with 0.0.   AndNullComparison:Is notNull, IsNull

The third log file in the log group is lost due to accidental operations.SQL> Conn/As sysdbaConnected. SQL> startupThe Oracle routine has been started. Total system global area 85006980 bytesFixed size 453252 bytesVariable Size 58720256

Why check points must occur when the database switches logs? What is the significance of this checkpoint? Which of the following table space management methods are available. Differences between local indexes and global indexes and their

Oracle provides two administrator verification methods: operating system verification and password file verification, connecting to the database, and performing management tasks. When an Oracle database is created, two users sys and system are

[Oracle @ gisdb bin] $./sqlplusError 6 initializing SQL * PlusMessage file SP1 . MSB not foundSP2-0750: you may need to set ORACLE_HOME to your Oracle Software Directory[Oracle @ gisdb bin] $ proBash: Pro: Command not found[Oracle @ gisdb bin]

During Development today, my following requirements: I need to find data from different tables, but the SQL statements are relatively fixed: Select count (*) CNT from table_a where code = codevalue; In the preceding SQL statement, only table_a and

The client can connect to the server only after creating a connection with the server. At this time, the server needs to allocate certain resources to the user for connection, that is, PGA. So how does Oracle manage PGA? How many resources does a

[DB] [Oracle] trigger to create an instance // Trigger name usertotemp Create or replace trigger usertotemp after insert or update or delete On user_info for each row // triggers the following events when operating on the table user_info Declare //

For Oracle DBAs, table space monitoring is an important task of daily and regular monitoring. Table space monitoring includes table space status, data files, table space usage, and remaining conditions. 1. Table space list: SQL> select * from V $

The lag and lead functions can be used to retrieve the data of the first n rows and the values of the last n rows of the same field in a query. The lag and lead functions

SQL statement for querying the number of active database cursors Select All allcursor cursor, myallcursor my cursor count, myopencursor my open cursor count, mycachecursor my session cache cursor count (myallcursor-myopencursor-mycachecursor) my

D: \ oracle \ product \ 10.2.0 \ db_1 \ Network \ admin \ tnsnames. ora Steps:1. Create a database2. Create a tablespace3. Users who belong to the database4. Specify the tablespace for the user Table space creation statement:Create tablespace

Article category:Java programming I searched for ibatis's use of like on the Internet. I believe the xdjm in this article should also know how to solve it. I will not repeat it here. I just want to explain it again: Leave '% $ xxx $ %' blank. The

-- 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_id-- View which session is causedSelect B. username, B. Sid, B. Serial #, logon_timeFrom

Problem description: Oracle source table can store"Chinese test"Four Chinese characters, but after being extracted and written to the target table of the same structure by powercenter, the Chinese characters are truncated to two Chinese

Decode(Condition, value 1, translation value 1, value 2, translation value 2,... value n, translation value n, default value) The function has the following meanings: If condition = value 1 thenReturn (translation value 1)Elsif condition = value

Oracle has three default customers 1. sys password change_on_install [as sysdba] 2. system password manager3 and Scott password tiger login with cmd: sqlplus/As sysdba Create user: create user xiaokuidentified Xiaoku; grant session permission: grant