Delta and complete cache refresh.
HI,
Difference between Delta and complete cache refresh.
thanks
sunil
Hi,
There are several variants of the cache refresh mechanism depending on the scope of the cache refresh (delta only or entire cache refresh) and on the triggering component (tool or messaging component).
Delta Cache Refresh
Delta Cache Refresh involves the missing activated change lists to be included in the directory cache.
Complete Cache Refresh
To restructure the cache completely, in the menu bar choose XI Runtime Cache à Start Complete Cache Refresh.
Cache refreshing means getting the newly created component in the cache. Usually cache get refreshed automatically by SAP system and user do no thave to refresh it but in some cases the newly created component does not get dispalyed in cache. In that case this cache should be refreshed and it will pull out the new component in it.
Thanks
Swarup
Similar Messages
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Delta refresh and complete cache refresh
Hi,
iam doing the complete cache refresh and delta cache refresh in my scenario. after doing that the data's are reflecting very slowly in the RWB valuemapping cache.
sometimes it is not reflecting in the RWB valuemapping cache.
i refreshed the CPI cache and SLD cache, still it is not reflecting in the RWB.
could anyone tell me the solution for this to reflect in the RWB valuemapping cache????
Regards
sasiHi,
In the component monitoring check the RWB component and check the performance monitoring, may be some times performance monitoring is low because of the payload or some other conditions.
Delta Cache Refresh: Any new objects that have been created/modified during the design/configuration
activities are inserted into the temporary database tables when we use delta
cache refresh option.(Partial process refresh)
Complete Cache Refresh: All entries in temporary cache tables are deleted and a background program
for inserting the complete information about all the design/configuration
objects.(whole process refresh) -
Delta cache refresh Vs Complete cache refresh
In SXI_cache
we can view Delta cache refresh and Complete cache refresh
can you explain Delta cache refresh Vs Complete cache refresh???hi Gabriel,
Only execute Complete Cache refresh, if Delta refresh does not solve the issue! Delta cache refresh should resolve all known issues.
Complete cache refresh can run long time and delay message processing in this time.
for more details
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c0332b2a-eb97-2910-b6ba-dbe52a01be34
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1a69ea11-0d01-0010-fa80-b47a79301290
*PS reward points if useful**
Regards,
Sumit Gupta -
Can we Start Complete Cache Refresh at production
While the production is running , we want to do a "Start Complete Cache Refresh" at SXI_CACHE.
Please inform us whether you did it and if so, what is the impact?
Thanks!I am assuming you wont be doing Complete Cache refresh just for the heck of doing it.
Incase any cache related problem occurs the only way to solve would be to refresh the cache.
So you really don't have any option to decide whether you should do or not.
Well Yes messages could fail when full cache refresh is taking place.
>The entire refresh typically takes how many munites to be done?
Actually depends on the no of interfaces which are present, memory, cpu,etc etc.
Why don't you try to do a full cache refresh in Dev and see how much time it takes. In Prd it should take less than the time it takes in the dev system.
Regards,
Sumit -
Hi,
What is significance of Cache Refresh (SXI_CACHE)?
And what is difference between Delta Refresh and Complete Refresh?
Thanks and Regards,
Vijay RahejaHi Vijay,
You can view all cached objects by running transaction SXI_CACHE. You can see whether the cache is up-to-date or not. You can view all cached data and start a manual cache refresh.
If you suspect that a change in a Integration Directory has not been replicated to the runtime cache, you can refresh the cache manually. To refresh the cache in SXI_CACHE, from the menu choose XI runtime Cache.
In a Delta cache all the data are not replicated. Only the data that is changed from the last cache is updated.
Hope this clarifies.
Regards.
Praveen -
Error in INTEGRATION_DIRECTORY_HMI and CACHE REFRESH
Hi guys, well after checking the forum and several blogs i can't get rid of my problem!
I have a problem concerning INTEGRATION_DIRECTORY_HMI and CACHE REFRESH.
i wanted to get a file from a FTP-Server via CC and i got error:
<SAP:AdditionalText>Error when reading HTTP destination: INTEGRATION_DIRECTORY_HMI.</SAP:AdditionalText>
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack>Error while refreshing the XI runtime cache</SAP:Stack>
<SAP:Retry>M</SAP:Retry>
Because of this i tried to update my cache (SXI_CACHE). When i do a Delta Cache Refresh i get:
Prefix Number: entry missing for system SSID client 100.
When i do a complete Cache Refresh nothing happens at all. I also checked the cache notification in IB - Integration Directory where i fin dout that only the Integration Server (ABAP Cache) won't refresh. Well status is started but nothing else is happening.
Then i checked the RFC INTEGRATION_DIRECTORY_HMI, did a connection test where i get an Internal Server error.
Let me tell u that the systems runs very well in the last days but now i have no clue what might be wrong.
Can somebody please advice me? I already read all blogs concerning this and also did a complete system-restart....
br Jenswhen you check INTEGRATION_DIRECTORY_HMI with SM59 it is normal to get
HTTP Response 500 - Internal Server Error. In this case it meens everything OK
see the rediness check, that is attached to SAP note 817920
when you start the complete cache refresh, you can see
the function module SAI_CACHE3_REFRESH_BACKGROUND in SM58. As long as you can see this entry, the cache
refresh is ongoing. If the refresh takes too long and runs on an error, try to specify another timeout in INTEGRATION_DIRECTORY_HMI or in the ICM
Best Regards
Alexander
Message was edited by:
Alexander Wrobel
Message was edited by:
Alexander Wrobel
Message was edited by:
Alexander Wrobel -
Problems in SLD and Cache refresh (SXI_CACHE).
Dear Experts,
I am facing SLD and Cache refresh problems in PI 7.0 on HP-UX.
1) SXI_CACHE : Last Error During Cache refresh is showing LCR_GET_OWN_BUSINESS_SYSTEM - NO_BUSINESS_SYSTEM error. And also Start Delta Cache Refresh / Start Complete Cache refresh are in deactive mode (Frozen).
2) SLDCHECK : Log says No Business System for ABC Client 100 ".
where ABC=SID. Business System INTEGRATION_SERVER_ABC is declared in SLD and client 100 is assigned.
My question is : Is this a BASIS or DEVELOPER issue? Also please let me know if you have any solutions for the above mentioned issue. Thanks in Advance.
SLDCHECK Log Snippet:
SLD server access settings:
host name: ABCXIDEV
port number: 50000
user : PIAPPLUSER
Use transaction SLDAPICUST if you wish to maintain the SLD server access data
Launching the SLD GUI in a separate browser window...
=> Verify in the browser GUI that the SLD is in a healthy running state!
Calling function LCR_LIST_BUSINESS_SYSTEMS
Retrieving data from the SLD server...
Function call terminated sucessfully
List of business systems maintained in the SLD:
INTEGRATION_SERVER_ABC
ERP_DEV_100
Calling function LCR_GET_OWN_BUSINESS_SYSTEM
Retrieving data from the SLD server...
No corresponding business system found for system ABC client 100
=> Check and maintain the SLD content for the current clientHello,
Since this is an PI system, your XI consultant must have created/will need to create business systems in SLD for the scenario to work properly. This error is because it cannot find the business system.
You cannot point out the fingers on Basis or XI and say that it is THEIR issue. Please consult with the consultant who is doing the XI interface and check if the business systems he require are properly created in SLD. If not, create them or ask them to create it (if they are allowed to..).
From the error, what i can see is that you have defined an integration server INTEGRATION_SERVER_ABC in SLD . the XI interface is checking the required business system in the integration server INTEGRATION_SERVER_ABC in SLD but cannot find it over there. Please check the integration server INTEGRATION_SERVER_ABC in SLD and talk to the XI consultant and you will be able to fix this with their help.
Hope this helps you..
Regards,
Jazz -
Hi,
I am working on JDBC to RFC scenario. As there were some new changes done on RFC i have re-imported the new structure into XI and activated. Now when i run the scenario it is still taking the old structure and it is failing in sxmb_moni.
I tried full cache refresh through sxi_cache but still the same problem.
Please help me out.
Best Regards,
SudheerHi Sudheer,
First Clear SLD Data Cache from IR and ID using the menu option
Environment-->Clear SLD Data Cache
Now, use XIDIRUSER to refresh the cache via below URLs -
For complete cache refresh - http://<hostname>:<port>/CPACache/refresh?mode=full
For delta cache refresh - http://<hostname>:<port>/CPACache/refresh?mode=delta
If this does not solve the issue, check transaction SLDCHECK to ensure that connection to SLD is available.
If the issue still persists, see Cache Update Problems section in [XI Troubleshooting Guide|http://www.riyaz.net/blog/index.php/2008/06/04/xipi-sap-xi-troubleshooting-guide/].
Regards,
Riyaz -
Cache refresh error, while activating changelists
Hi all,
I got a problem, concerning XI Runtime Cache on XI 3.0, SP15 -> when I try to activate changelists from Integration Directory, (SOMETIMES!)XI_CACHE shows status: Error, while refreshing cache
with Errortype: Communication,
"if_http_client receive http_communication_failure"
When I then do a delta or full cache refresh from transaction SXI_CACHE it allways works, even after an error occured before. Some ideas, what I could check?
Thank you in advance..
DanielHi,
Just check with Tcode SICF and check for all the services are working fine.
Go thru following links
http://service.sap.com/NW04 ->How-to Guides-> Exchange Infrastructure->How To handle Caches in SAP XI 3.0
Also go thru following thread.
problem with xi cache
Hope this helps.
Regards,
Moorthy
Regards
Suraj
Regards,
Moorthy -
Is CPA Cache refresh linked with ftp or file pooling process in XI?
Hi,
I have a file to file scenario using Transport protocol as FTP in XI 3.0 SP 15.
When we try to sends some file using ftp protocol where we are using
FTP connection parameters
Server = <CORRECT IP>,
Port = 21 ,
User name <CORRECT NAME>,
Password <PASSWORD> ,
Data Connection = Active
Connection Seq = None
Connection Mode = Permanently
Transfer Mode = Text
Processing Parameters
Quality of Service = Exactly Once
Pooling Interval = 1 sec
Processing Mode = delete
File Type = Text
File encoding = utf-8
The problem we are facing like some time the ftp is not working even the file is present in the location for pick up. If few files are stacked up to be collected then when we are using CPA Cache refresh in Full mode manually then it fetches all the files from the location but the problem is that ,we have a time constraint for this process to be completed in just 60 seconds if we are not able to pick up a file in 60 Secs then the file will be treated as invalid.
So I just want to know how Manual CPA CACHE refresh in full mode generally solve the problem.
Next if more files will be stacked up then cache refresh also failed to solve the problem and more cache refresh result in NOT pooling any other files in XI including the above discussed flow.
So,in anyway Cache refresh linked with ftp or file pooling process in XI?
Please assist me in correctly understating the whole problem and what solution could be put to solve this.
Thanks,
Satya
Edited by: Satya Jethy on Mar 14, 2008 12:28 PMHi Suraj,
If you see my query i have mentioned that the pooling interval is 1 Second.
If we are not able to pick the file with in 60 Secs as this is a real time scenario so the file will be treated as a invalid file.
Moreover this problem is happening some time.
I have also checked the component monitoring it is saying everything is ok as because we are receiving the file with out any error and the file transfer is also success.The only problem is that it is not collecting the files from the given location.
Hope i make you understnad the problem .If not please revert back i will try to explain once again.
Thanks,
Satya -
Cache Refresh Problem in SXI_CACHE Transaction in new client 700
Hi Experts,
We have installed and configured the new PI7.1 server and were checking its readiness by going through the Readiness Check Document. At one stage while we run the transaction SXI_CACHE in client 700 we are not getting the option of " Start Complete Cache Refresh" in highlighted mode. Thus we are not able to refresh the cache in client 700. But if I login in Client 001 and login using SAP* and run the SXI_CACHE I am able to see all the pipeline steps as well the option for complete Cache refresh and Adapter cache referesh is in Highlighted mode. The status is also green. Can somebody us in knowing where should we look into to solve this problem so that these option are available in the new client for refershing the CACHE.
Thanks
Regards
suk4023Hi Soujanya,
Yes we tried with the link given by you . we got the folowing error
403 Forbidden
SAP NetWeaver Application Server 7.11 / AS Java 7.11
Error: You are not authorized to view the requested resource.
Troubleshooting Guide https://sdn.sap.com/irj/sdn/wiki?path=/display/jsts/home
Details: No details available
Yes we tried by restaring the system too, but the status is same.
Any more inputs will be appreciated............
Thanks
Regards
Suk4023 -
"Delta Cache Refresh" option not working in SAP XI 3.0
Hello All,
We are using an SAP XI 3.0 system with SP9 installed on the same. The system is pretty much stable with all the components including SLD running fine. But!, when I run the Transaction "SXI_CACHE", the "Start Delta Cache Refresh" Button appears as Nullified and hinders the option for refreshing the cache. Could anyone guide me through this and make it work as we need to essentially do this step for the scenario we 're working on.
Thanks & Regards,
Venkat.Venkat,
Could you please check the status of you last cache refresh. There should be a traffic light displaying on the right part of the screen. If the last update was unsuccesful. Delta refresh isn't possible.
Best regards,
Alwin -
Delta cache Refresh shows error
Hi,
In SXI_CACHE
I did Delta cache Refresh
In XI RunTime Cache Status shows :
1. cache contants are up-to-date (Green light)
2. Error during last attempt to refresh cache(red error)
Adapter Engine Connect Data Cache shows the following error
04D3344F63C6074CBB50E4E910CDB54A
AE Name: af.sxi.eccserver
Adapter Engine URL: http://eccserver:50100/MessagingSystem/receive/AFW/XI
USER: XIISUSER
whats meant by this error ? How to rectify this ?
Thanks,
srinivas
Message was edited by:
srinivasIs you adapter engine...centalized or decentralized and is it a new installation or was it working before....
If its centralized check the communication channels...If its decentralized you need to select the appropriate name in the drop down list for adapter engine option else you need select it as Integration server.
Also check whether you specified the exact adapter engine and XIAFUSER in exchange profile(Adapter framework node)...also check whether the users XIAFUSER and XIISUSER exists and are not locked......
Hope this helps...
Regards,
Ravi -
Hi,
How we can keep cache clear all time. I am doing cache clearance manually.
Is there any program which do cache clear.
Thanks,
VishalHi Vishal,
Cache refresh is done automatically by jobs running in background: LSAI_CACHE3U03 (FM: SAI_CACHE3_REFRESH_BACKGROUND), you can also schedule this. Cache is also refreshred based on events (activation etc).
When it comes to FM SAI_CACHE3_REFRESH_HTTP, we are talking about sxi_cache and not the CPACache.
To trigger a cache refresh from the individual Adapter Framework, open a browser window and enter the following URL: http://<host>:<port>/CPACache/refresh?mode=delta|full.
Regds,
Pinangshuk. -
What is Cache refreshing in XI ? Why and when we will do that ?
Hi Experts
What is Cache refreshing in XI ? Why we need to do this ? when and all we
need to do that ?
T.Code: sxi_cache when we will use this ?
I have no idea on this and any one give more details on this pl....
Adv..thanx and points to all
Kiran LVSHi ,
There are 2 types of caches.....
CPA cache - is your Collaboration profile agreement cache, ie to mean it will contains the cache copy of all objects created during configuration time (ID).CPA (Collaboration profile agreement )Cache-mainly for J2EE engine/Adapter engine.
About Cache Monitoring-
http://help.sap.com/saphelp_nw2004s/helpdata/en/92/2fd93f130f9115e10000000a155106/content.htm
Runtime cache - it will contain cache copies of all the objects in XI (IR/ID)
and active version of all your objects during runtime.
Check this.......
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1a69ea11-0d01-0010-fa80-b47a79301290
Sekhar
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