OSB 10.3g file proxy and how to process files sequentially

Hi all,
I've a folder that contains some files that I need to process sequentially by a file proxy:
/tmp/osb/msg > ls -l
-rw-r--r-- 1 weblogic weblogic 904 Jul 22 12:02 yyy_C0001279792949924_20100722_120229_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 917 Jul 22 12:02 yyy_C0001279792949955_20100722_120229_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 932 Jul 22 12:02 yyy_C0001279792949986_20100722_120229_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 858 Jul 22 12:02 yyy_C0001279792950017_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 890 Jul 22 12:02 yyy_C0001279792950033_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 790 Jul 22 12:02 yyy_C0001279792950064_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 844 Jul 22 12:02 yyy_C0001279792950096_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 937 Jul 22 12:02 yyy_C0001279792950111_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 813 Jul 22 12:02 yyy_C0001279792950142_20100722_120230_BU.yyy.CH_ASS_xxx.xml
-rw-r--r-- 1 weblogic weblogic 963 Jul 22 12:02 yyy_C0001279792950158_20100722_120230_BU.yyy.CH_ASS_xxx.xml
this is the list of the files sorted alphabetically but also is the list sorted by creation time (each filename (after yyy_C) contains a timestamp and also a date).
The file proxy is configured as belows:
Service Type : Any XML Service
Protocol : file
Endpoint URI : file:///tmp/osb/msg
Get All Headers : No
File Mask : yyy*.xml
Polling Interval: 30
Read Limit : 0
Sort By Arrival : true
Scan SubDirectories: false
Pass By Reference : false
Post Read Action : archive
Stage Directory : /tmp/osb/stage
Archive Directory : /tmp/osb/archive
Error Directory : /tmp/osb/error
Request encoding : utf-8
Content Streaming : Disabled
I used "Sort By Arrival : true" because from doc (http://download.oracle.com/docs/cd/E13159_01/osb/docs10gr3/httppollertransport/index.html) I read:
"This parameter indicates the sequence of events raised in the order of the arrival of files. The default value for this parameter is False"
It is not clear if 'order of the arrival' means by time of the arrival or by 'alphabetical order'.
I did a test using the above settings but I see from OSB log file that the files are processed neither by time order nor by alphabetical order:
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '4' ... <BEA1-07857BB52A53B9043886> <> <1279794804450> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792949955_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '0' ... <BEA1-078F7BB52A53B9043886> <> <1279794804454> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792949924_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '1' ... <BEA1-07907BB52A53B9043886> <> <1279794804457> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792949986_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '0' ... <BEA1-07917BB52A53B9043886> <> <1279794804462> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950064_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '1' ... <BEA1-07927BB52A53B9043886> <> <1279794804467> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950017_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '0' ... <BEA1-07937BB52A53B9043886> <> <1279794804607> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950142_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '4' ... <BEA1-07947BB52A53B9043886> <> <1279794804611> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950111_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '4' ... <BEA1-07957BB52A53B9043886> <> <1279794804615> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950096_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '4' ... <BEA1-07967BB52A53B9043886> <> <1279794804618> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950033_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 12:33:24 PM CEST> <... ExecuteThread: '1' ... <BEA1-07977BB52A53B9043886> <> <1279794804630> ...########## ready to process filename: .../tmp/osb/msg/yyy_C0001279792950158_20100722_120230_BU.yyy.CH_ASS_xxx.xml
How could I process files sequentially ?
I think using also Read Limit = 1 and Polling Interval = 1 sec doesn't work, because
- if the proxy instance P1 reading file A takes more than 1 sec
- after 1 sec a second proxy instance P2 starts to process file B
- but P2 can completes its processing before P1 ...
What do you suggest to do ?
Thanks in advance
ferp

Hi Anuj,
even trying with
- Read Limit 1
- Polling Interval 1
- Sort By Arrival true
I see from OSB log file that the files are processed neither by time order nor by alphabetical order:
####<Jul 22, 2010 2:35:56 PM CEST> ... ExecuteThread: '0' ...<BEA1-07F27BB52A53B9043886> <> <1279802156519> .../tmp/osb/msg/yyy_C0001279792949955_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:35:58 PM CEST> ... ExecuteThread: '0' ...<BEA1-07F47BB52A53B9043886> <> <1279802158508> .../tmp/osb/msg/yyy_C0001279792949924_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:00 PM CEST> ... ExecuteThread: '1' ...<BEA1-07F67BB52A53B9043886> <> <1279802160525> .../tmp/osb/msg/yyy_C0001279792949986_20100722_120229_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:02 PM CEST> ... ExecuteThread: '4' ...<BEA1-07F87BB52A53B9043886> <> <1279802162544> .../tmp/osb/msg/yyy_C0001279792950064_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:04 PM CEST> ... ExecuteThread: '0' ...<BEA1-07FA7BB52A53B9043886> <> <1279802164564> .../tmp/osb/msg/yyy_C0001279792950017_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:06 PM CEST> ... ExecuteThread: '1' ...<BEA1-07FC7BB52A53B9043886> <> <1279802166584> .../tmp/osb/msg/yyy_C0001279792950142_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:08 PM CEST> ... ExecuteThread: '0' ...<BEA1-07FE7BB52A53B9043886> <> <1279802168606> .../tmp/osb/msg/yyy_C0001279792950111_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:10 PM CEST> ... ExecuteThread: '4' ...<BEA1-08007BB52A53B9043886> <> <1279802170624> .../tmp/osb/msg/yyy_C0001279792950096_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:12 PM CEST> ... ExecuteThread: '0' ...<BEA1-08027BB52A53B9043886> <> <1279802172644> .../tmp/osb/msg/yyy_C0001279792950033_20100722_120230_BU.yyy.CH_ASS_xxx.xml
####<Jul 22, 2010 2:36:14 PM CEST> ... ExecuteThread: '4' ...<BEA1-08047BB52A53B9043886> <> <1279802174664> .../tmp/osb/msg/yyy_C0001279792950158_20100722_120230_BU.yyy.CH_ASS_xxx.xml
As said I think that using Read Limit = 1 and Polling Interval = 1 sec doesn't work, because
- if the proxy instance P1 reading file A takes more than 1 sec for processing the file
- after 1 sec a second proxy instance P2 starts to process file B
- but P2 can completes its processing before P1 ...
Do you know if OSB when polling a file, takes it only when OSB recognizes the file has been written completely ?
I mean what happens if OSB wakes up while the file producer is still writing the file ?
Regards
ferp

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