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When Oracle 11g is exported using EXP, empty tables cannot be exported, and 11 gexp I. cause:There is a new feature in 11G. When the table has no data, no segment is allocated to save space.1. insert a row and then roll back to generate a

Sometimes when you delete a directory in Windows, the "source file name length is greater than the length of the system support", and can not be deleted, as a program ape, how can this be impressed by this, on the code:Import java.io.file;/** *

First, the cause of the problem:A new feature in 11G that does not allocate segment when the table has no data to save space1, insert a row, and then rollback will produce segment. The method is to insert data into the empty table and then delete it,

in Oracle 11g R2, it was found that the traditional exp could not export the empty table, and then queried,find the following steps to take, notes.  Oracle 11g has a new parameter: deferred_segment_creation, meaning segment delay creation, which is

File Management class commandsLsView: Cat tac more less head tailCopy: CP-R: Recursive-I: Hints, interaction-F: Forced override-A: Keep all file information-D: When the source is a linked file, the link itself is copied instead of the source file-P:

1. Empty operationAn empty operation means that the system will navigate to the empty operation () method when it cannot find the requested action method, and _empty with this mechanism we can implement the error page and some URL optimizations.http

Window System general file name encoding for GBK, file content encoding this need to view or set through the editor, find a editplus text editor can handle text content encoding. Then on the window to display normal files to Linux, often because of

There are many blank lines after extracting the log files to be viewed recently, which is not conducive to the comparison of previous files. for backward compatibility, this article describes how to use shell to remove empty rows in a file. learn

PHP rmdir () functionRmdir― Delete Empty DirectoryGrammar:BOOL RmDir (String $dirname [, Resource $context])An attempt was made to delete the directory specified by DirName. The directory must be empty and have the appropriate permissions. Failure

The method echo & gt; fileName used to create an empty file (0-byte size) in Linuxshell is one byte. After learning, it is found that the file that creates an empty file (0 byte size) has the following methods: 1. when the file does not exist,