You can have a maximum of 50 files open simultaneously. With this function, you can read or write a text file in Unicode instead of in the database character set. An exception is returned on failure. This procedure renames an existing file to a new name, similar to the UNIX mv function.
Permission on both the source and destination directories must be granted. You can use the overwrite parameter to specify whether or not to overwrite a file if one exists in the destination directory. This procedure adjusts the file pointer forward or backward within the file by the number of bytes specified.
You must know the number of bytes by which you want to navigate. If the beginning of the file is reached before the number of bytes specified, then the file pointer is placed at the beginning of the file. This procedure reads text from the open file identified by the file handle and places the text in the output buffer parameter.
Text is read up to, but not including, the line terminator, or up to the end of the file, or up to the end of the len parameter. The number of bytes read from the file. Default is NULL. Because the line terminator character is not read into the buffer, reading blank lines returns empty strings. With this function, you can read a text file in Unicode instead of in the database character set.
The file must be opened in national character set mode, and must be encoded in the UTF8 character set. The file must be open for reading mode r. This procedure reads a RAW string value from a file and adjusts the file pointer ahead by the number of bytes read.
Your application should allow for this by catching the exception in its processing loop. This function tests a file handle to see if it identifies an open file. It does not guarantee that there will be no operating system errors when you attempt to use the file handle. This procedure writes one or more line terminators to the file identified by the input file handle. This procedure is separate from PUT because the line terminator is a platform-specific character or sequence of characters.
PUT writes the text string stored in the buffer parameter to the open file identified by the file handle. The file must be open for write operations. The file must be open for writing. The sum of all sequential PUT calls cannot exceed without intermediate buffer flushes. This procedure writes the text string stored in the buffer parameter to the open file identified by the file handle. With this function, you can write a text file in Unicode instead of in the database character set.
The file must be opened in the national character set mode. The text string will be written in the UTF8 character set. This procedure is a formatted PUT procedure. It works like a limited printf. Formatted text is written in the UTF8 character set to the file identified by the file handle. This procedure accepts as input a RAW data value and writes the value to the output buffer.
You can request an automatic flush of the buffer by setting the third argument to TRUE. Caution: The privileges needed to access files in a directory object are operating system specific. Rules and Limits Operating system-specific parameters, such as C-shell environment variables under UNIX, cannot be used in the file location or file name parameters.
Attempts to clone file handles or use dummy file handles may have inderterminate outcomes. Subscribe to: Post Comments Atom. Exception Name. Access to the file has been denied by the operating system. A file with the specified name does not exist in the path. File could not be opened or operated on as requested. Specified path does not exist or is not visible to Oracle. Oracle Directory Creation. File To Create: test. Daniel,Morgan Jack,Cline.
Close named file. Close all files. Copies a contiguous portion of a file to a newly created file. Physically writes pending data to the file identified by the file handle. Reads and returns the attributes of a disk file. Returns the current relative offset position within a file, in bytes.
Open a file for read operations. Permission to access to the file location is denied. Requested file delete operation failed. Requested operation failed because the file is open. The filename parameter is invalid. File could not be opened or operated on as requested. Operating system error occurred during the read operation. Requested file rename operation failed.
Operating system error occurred during the write operation. Indicates the internal file handle number numeric value. Indicates whether the file was open as a binary file or as a text file. FCOPY procedure. Copies a contiguous portion of a file to a newly created file.
Physically writes all pending output to a file. Reads and returns the attributes of a disk file. Returns the current relative offset position in bytes within a file, in bytes.
FOPEN function. Opens a file in Unicode for input or output. Deletes a disk file if you have sufficient privileges. Renames an existing file to a new name, similar to the UNIX mv function. FSEEK procedure. Adjusts the file pointer forward or backward within the file by the number of bytes specified. Reads text in Unicode from an open file. Determines if a file handle refers to an open file. Writes one or more operating system-specific line terminators to a file. PUT procedure.
Writes a line to a file, and so appends an operating system-specific line terminator. Accepts as input a RAW data value and writes the value to the output buffer. PUTF procedure. This is equivalent to PUT but with formatting. Directory location of the source file. Destination directory where the destination file is created. Destination file created from the source file. Line number at which to begin copying The default is 1 for the first line.
Length of the file in bytes, or NULL if file does not exist. File system block size in bytes, or NULL if file does not exist. File name, including extension file type , without directory path If a directory path is given as a part of the file name, it is ignored by FOPEN.
Maximum number of characters for each line, including the newline character, for this file The minimum value is 1 and the maximum is Destination directory of the destination file.
Absolute location to which to seek, in bytes default NULL.
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