some time 503 Service Unavailable

[3245]

Hi
Some times (some times) i see "503 Service Unavailable" error

my installed module:

root@host []# php -m
[PHP Modules]
bcmath
calendar
Core
ctype
curl
date
dom
ereg
filter
ftp
gd
gettext
hash
iconv
imap
ionCube Loader
json
libxml
mbstring
mcrypt
mysql
openssl
pcre
PDO
pdo_mysql
pdo_sqlite
posix
Reflection
session
SimpleXML
soap
sockets
SourceGuardian
SPL
SQLite
sqlite3
standard
suhosin
tokenizer
xml
xmlreader
xmlrpc
xmlwriter
zip
zlib

[Zend Modules]
the ionCube PHP Loader

root@host [/]# php -v
PHP 5.3.27 (cli) (built: Oct 6 2013 00:50:51)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2013 Zend Technologies
with the ionCube PHP Loader v4.4.1, Copyright (c) 2002-2013, by ionCube Ltd.
with Suhosin v0.9.33, Copyright (c) 2007-2012, by SektionEins GmbH

PHP suEXEC = Yes

it is maybe for Sql/database configuation?

have you any suggestion?

Thanks!

 

[vacancy]

Php if there is a conflict with components related to this issue v6.3 api, api encounters with 503 error after updating.
this is no problem in 6.2 api.

 

[3245]

i not underestand correctly, now what is API?
how i can update that?

Please help me more....

Thanks.