Testing file existence from client side

hi
Is it possible to test whether an arbitrary file or directory exists (and is readable by oracle user) on the database server file system from an Oracle client application? I would need to do this on 10gR2 and 9iR2.
br. aspa

To test for a directory query the dictionary view ALL_DIRECTORIES
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96536/ch241.htm#1291666
To test for the existance of a file either try to open it in read mode using UTL_FILE or
use Tom Kytes DirList utility for a list of files in the particular directory
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:7506780031005

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How can i load file into database from client-side to server-side

i want to upload file from client-side to server-side, i use the following code to load blob into database.
if the file is in the server-side, it can work, but if it in the client-side, it said that the system cannot find the file. i think it only will search the file is in the server-side or not, it will not search the client-side.
how can i solve it without upload the file to the server first, then load it into database??
try
ResultSet rset = null;
PreparedStatement pstmt =
conn.prepareStatement ("insert into docs values (? , EMPTY_BLOB())");
pstmt.setInt (1, docId);
pstmt.execute ();
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pstmt.setInt (1, docId);
rset = pstmt.executeQuery (
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BLOB dest_lob = null;
if (rset.next()) {
dest_lob = ((OracleResultSet)rset).getBLOB (1);
// Declare a file handler for the input file
File binaryFile = new File (fileName);
FileInputStream istream = new FileInputStream (binaryFile);
// Create an OutputStram object to write the BLOB as a stream
OutputStream ostream = dest_lob.getBinaryOutputStream();
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byte[] buffer = new byte[1024];
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Hi,
Without some more details of the configuration, its difficult to know
what's happening here. For example, what do you mean by client side
and server side, and where are you running the upload Java application?
If you always run the application on the database server system, but can't
open the file on a different machine, then it sounds like a file protection
problem that isn't really connected with the database at all. That is to
say, if the new FileInputStream (binaryFile) statement fails, then its not
really a database problem, but a file protection issue. On the other hand,
I can't explain what's happening if you run the program on the same machine
as the document file (client machine), but you can't write the data to the
server, assuming the JDBC connection string is set correctly to connect to
the appropriate database server.
If you can provide some more information, we'll try to help.
Simon
null

Read and write info from/to file available at client side.

Hi,
I have some table name in one CSV file at client side.
once you get list of tables name from input CSV file at client side.
Need to run one query to know total rows and size of table in MB , this i need to repeat for all tables which i got from input file.
finally write 'table name | total rows | size of table in MB' whole info in another CSV file at client side. this output CSV file name will contain timestamp.
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I am using sql developer at client side.
version : oracle11g
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This is a simple SQL question and this forum is for SQLDEveloper, however, this is a question for our SQL*Plus support which can help with this.
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set FEEDBACK off
set head off
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I have noticed that the KeyChain tool should be available on iPad using the documented API, but I have no idea based on the documentation whether the API can be called from client-side HTML scripting on iPad.
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Hi
calling session bean from client side it gives Lookup erroe, it gives JNDI error
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null

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PROCEDURE pr_Forms_to_Excel(p_block_name IN VARCHAR2 DEFAULT NAME_IN('system.current_block')) IS
-- Declare the OLE objects
application OLE2.OBJ_TYPE;
workbooks OLE2.OBJ_TYPE;
workbook OLE2.OBJ_TYPE;
worksheets OLE2.OBJ_TYPE;
worksheet OLE2.OBJ_TYPE;
cell OLE2.OBJ_TYPE;
range OLE2.OBJ_TYPE;
range_col OLE2.OBJ_TYPE;
-- Declare handles to OLE argument lists
args OLE2.LIST_TYPE;
-- Declare form and block items
form_name VARCHAR2(100);
f_block VARCHAR2(100);
l_block VARCHAR2(100);
f_item VARCHAR2(100);
l_item VARCHAR2(100);
cur_block VARCHAR2(100) := NAME_IN('system.current_block');
cur_item VARCHAR2(100) := NAME_IN('system.current_item');
cur_record VARCHAR2(100) := NAME_IN('system.cursor_record');
item_name VARCHAR2(100);
baslik VARCHAR2(100);
row_n NUMBER;
col_n NUMBER;
filename VARCHAR2(100);
ExcelFontId OLE2.list_type;
BEGIN
-- Start Excel
application:=OLE2.CREATE_OBJ('Excel.Application');
OLE2.SET_PROPERTY(application, 'Visible', 'True');
-- Return object handle to the Workbooks collection
workbooks:=OLE2.GET_OBJ_PROPERTY(application, 'Workbooks');
-- Add a new Workbook object to the Workbooks collection
workbook:=OLE2.GET_OBJ_PROPERTY(workbooks,'Add');
-- Return object handle to the Worksheets collection for the Workbook
worksheets:=OLE2.GET_OBJ_PROPERTY(workbook, 'Worksheets');
-- Get the first Worksheet in the Worksheets collection
-- worksheet:=OLE2.GET_OBJ_PROPERTY(worksheets,'Add');
args:=OLE2.CREATE_ARGLIST;
OLE2.ADD_ARG(args, 1);
worksheet:=OLE2.GET_OBJ_PROPERTY(worksheets,'Item',args);
OLE2.DESTROY_ARGLIST(args);
-- Return object handle to cell A1 on the new Worksheet
go_block(p_block_name);
baslik := get_block_property(p_block_name,FIRST_ITEM);
f_item := p_block_name||'.'||get_block_property(p_block_name,FIRST_ITEM);
l_item := p_block_name||'.'||get_block_property(p_block_name,LAST_ITEM);
first_record;
LOOP
item_name := f_item;
row_n := NAME_IN('SYSTEM.CURSOR_RECORD');
col_n := 1;
LOOP
IF get_item_property(item_name,ITEM_TYPE)<>'BUTTON' AND
get_item_property(item_name,VISIBLE)='TRUE'
THEN
-- Set first row with the item names
IF row_n=1 THEN
------updated by faisal-to give Bold font-----
--FOR k IN 1 .. 3 LOOP
     args := OLE2.create_arglist;
     OLE2.add_arg(args, 1);
     OLE2.add_arg(args, col_n);
     cell := OLE2.get_obj_property(worksheet, 'Cells', args);
     OLE2.destroy_arglist(args);
     --cell_value := OLE2.get_char_property(cell, 'Value');
     ExcelFontId := OLE2.get_obj_property(Cell, 'Font');
     OLE2.set_property(ExcelFontId, 'Bold', 'True');
--END LOOP;
baslik:=NVL(get_item_property(item_name,PROMPT_TEXT),baslik);
args:=OLE2.CREATE_ARGLIST;
OLE2.ADD_ARG(args, row_n);
OLE2.ADD_ARG(args, col_n);
cell:=OLE2.GET_OBJ_PROPERTY(worksheet, 'Cells', args);
OLE2.DESTROY_ARGLIST(args);
OLE2.SET_PROPERTY(cell, 'Value', baslik);
OLE2.RELEASE_OBJ(cell);
END IF;
-- Set other rows with the item values
args:=OLE2.CREATE_ARGLIST;
OLE2.ADD_ARG(args, row_n+1);
OLE2.ADD_ARG(args, col_n);
cell:=OLE2.GET_OBJ_PROPERTY(worksheet, 'Cells', args);
OLE2.DESTROY_ARGLIST(args);
IF get_item_property(item_name,DATATYPE)<>'NUMBER' THEN
OLE2.SET_PROPERTY(cell, 'NumberFormat', '@');
END IF;
OLE2.SET_PROPERTY(cell, 'Value', name_in(item_name));
OLE2.RELEASE_OBJ(cell);
END IF;
IF item_name = l_item THEN
exit;
END IF;
baslik := get_item_property(item_name,NEXTITEM);
item_name := p_block_name||'.'||get_item_property(item_name,NEXTITEM);
col_n := col_n + 1;
END LOOP;
EXIT WHEN NAME_IN('system.last_record') = 'TRUE';
NEXT_RECORD;
END LOOP;
-- Autofit columns
range := OLE2.GET_OBJ_PROPERTY( worksheet,'UsedRange');
range_col := OLE2.GET_OBJ_PROPERTY( range,'Columns');
OLE2.INVOKE( range_col,'AutoFit' );
OLE2.RELEASE_OBJ( range );
OLE2.RELEASE_OBJ( range_col );
-- Get filename and path
args := OLE2.CREATE_ARGLIST;
OLE2.ADD_ARG( args, p_block_name );
OLE2.ADD_ARG( args,'Excel Workbooks (*.xls, *.xls');
filename := OLE2.INVOKE_CHAR( application,'GetSaveAsFilename',args );
OLE2.DESTROY_ARGLIST( args );
-- Save as worksheet
IF NVL(filename,'0')<>'0' THEN
args := OLE2.CREATE_ARGLIST;
OLE2.ADD_ARG( args,filename );
OLE2.INVOKE( worksheet,'SaveAs',args );
OLE2.DESTROY_ARGLIST( args );
END IF;
-- Close workbook
--OLE2.INVOKE( workbook ,'Close');
-- Release the OLE objects
OLE2.RELEASE_OBJ(worksheet);
OLE2.RELEASE_OBJ(worksheets);
OLE2.RELEASE_OBJ(workbook);
OLE2.RELEASE_OBJ(workbooks);
--OLE2.INVOKE(application, 'Quit');
OLE2.RELEASE_OBJ(application);
-- Focus to the original location
go_block(cur_block);
go_record(cur_record);
go_item(cur_block||'.'||cur_item);
END;
Thanks in advance.
Rizly Faisal

Alternatively you could use OLE2 to do the bulk of the importing and exporting and then use the webutil file transfer functions to move the file to the client and then simply open the file there...That might be more efficient in terms of performance as well.
Regards
Grant

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