How to configure Xmanager to CentOS

Can any help in this issue, it would be really appreciated.
I did the following, but it didnt help....
For XDMCP connection to Red Hat 5 EL
1. XDM Configuration
1. Change runlevel to 5

Open/etc/inittab and set the initial runlevel to 5 as following:
id:5:initdefault:

2. Enable XDMCP

For GDM:

Open /etc/gdm/custom.conf and set the Enable entry to 1 in the [xdmcp]
section as following.
[xdmcp]
Enable=1

For KDM:

Open /usr/share/config/kdm/Xaccess and remove the initial "#"
character for the following line:
#* #any host can get a login window ==>
* #any host can get a login window
Open /usr/share/config/kdm/kdmrc and set the Enable entry to true in
the [xdmcp] section as following.
[xdmcp]
Enable=true

2. Firewall (TCP/UDP Ports) Configuration
Open UDP port 177 from the PC to the remote host direction.
Open incoming TCP ports 6000~6010 from the remote host to your PC.
3. Reboot the remote host and start Xmanager
# init 3; init 5

To check the RPM of Disk

For Linux
hdparm -I /dev/dsk/c3t2d0s0

For Windows

form my computer > Manage > Device manager > HDD > Model no

sql on '&' character in Oracle

Escape ampersand (&) characters in SQL*Plus

When using SQL*Plus, the DEFINE setting can be changed to allow &'s (ampersands) to be used in text:


SET DEFINE ~
SELECT 'Lorel & Hardy' FROM dual;
Other methods:

Define an escape character:


SET ESCAPE '\'
SELECT '\&abc' FROM dual;
Don't scan for substitution variables:


SET SCAN OFF
SELECT '&ABC' x FROM dual;

to convert systimestamp to Any other time zone

The fuction is from_tz

SELECT FROM_TZ(to_timestamp(to_char(systimestamp,'DD-MON-YYYY HH:MI:SS PM')) ,'+05:30') AT TIME ZONE '-06:00',systimestamp from dual;

and one more fn.

select LOCALTIMESTAMP AT TIME ZONE '-6:00' from dual;

ORA-31626 - ORA-31650

Error is as below:-
/*****************************************************************/

-bash-3.00$ expdp "'/ as sysdba'" directory=backup dumpfile=full_expor_1.dmp
logfile=full_export_1.log schemas=scoot

Export: Release 10.2.0.1.0 - Production on Monday, 14 September, 2009 11:04:37
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
ORA-31626: job does not exist
ORA-31650: timeout waiting for master process response

/****************************************************************************/
solution :-
select Table_name from dba_tables where table_name like '%EXPORT%' and owner='SYS';

Delete all the Table Created by Export Utility while Creating the Metadata.

Oracle Table OUTPUT to CSV

(1st Method)
set colsep ','
set pagesize 0
set feedback off
set trimspool on
set linesize 1000
spool myfile.csv
select * from mytable;
spool off

(2nd Method)

create or replace function dump_csv( p_query in varchar2,
p_separator in varchar2
default ',',
p_dir in varchar2 ,
p_filename in varchar2 )
return number
AUTHID CURRENT_USER
is
l_output utl_file.file_type;
l_theCursor integer default dbms_sql.open_cursor;
l_columnValue varchar2(2000);
l_status integer;
l_colCnt number default 0;
l_separator varchar2(10) default '';
l_cnt number default 0;
begin
l_output := utl_file.fopen( p_dir, p_filename, 'w' );

dbms_sql.parse( l_theCursor, p_query, dbms_sql.native );

for i in 1 .. 255 loop
begin
dbms_sql.define_column( l_theCursor, i,
l_columnValue, 2000 );
l_colCnt := i;
exception
when others then
if ( sqlcode = -1007 ) then exit;
else
raise;
end if;
end;
end loop;

dbms_sql.define_column( l_theCursor, 1, l_columnValue,
2000 );

l_status := dbms_sql.execute(l_theCursor);

loop
exit when ( dbms_sql.fetch_rows(l_theCursor) <= 0 );
l_separator := '';
for i in 1 .. l_colCnt loop
dbms_sql.column_value( l_theCursor, i,
l_columnValue );
utl_file.put( l_output, l_separator ||
l_columnValue );
l_separator := p_separator;
end loop;
utl_file.new_line( l_output );
l_cnt := l_cnt+1;
end loop;
dbms_sql.close_cursor(l_theCursor);

utl_file.fclose( l_output );
return l_cnt;
end dump_csv;
/


You would use that for example like this:

create or replace procedure test_dump_csv
as
l_rows number;
begin
l_rows := dump_csv( 'select *
from all_users
where rownum < 25',
',', '/tmp', 'test.dat' );
end;
/

To Calculate Diff. Shared memory by Oracle Process

SELECT
'PGA: pid '||p.spid pid,p.pga_alloc_mem bytes,
p.username ps_user,p.program ps_program,
s.logon_time,s.sid,s.serial#,s.username,s.machine,s.osuser,s.program
FROM v$session s ,v$sesstat pcur,v$process p WHERE pcur.statistic#=20 AND s.paddr=p.addr AND pcur.sid=s.sid
UNION ALL SELECT 'SGA: '||name pid,value bytes,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL FROM v$sga
ORDER BY 2 DESC