How many bytes does a refresh check on the DDLOG table cost?

Hello,
each application server checks after "rdisp/bufrefreshtime" in the DDLOG table on the database whether one of it's tables or entries of tables are invalid.
Only tables or entries of tables that are invalid appear in the DDLOG table. If an application servers gets to know which of his tables are invalid, he can synchronize with the next read access.
Does anybody know how many bytes such a check cost?
The whole DDLOG must be read by each application server, so it depends on the number of entries in the DDLOG.
Does anybody know?
thx, holger

Hi,
except of system and some timestamps, everything is stored in a raw field.
Checking FM SBUF_SEL_DDLOG_RECS I found some additional info:
- There are several synchronization classes
- Classes 8 and 16 don't contain table or key info -> complete buffer refresh
- Other classes should have a table name
- In this case is an option for a key definition
-> I guess, generic and single buffers are handled with corresponding key fields, full buffered is probably handled without key fields.
An entry in DDLOG itself is the flag / mark for: this buffer is invalid.
It's obviously single/generic key specific - otherwise the whole concept of single/generic key would be obsolete.
Christian

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Enter port to run server on:
5656
Listening on : ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=5656]
Waiting for client connection...
Socket[addr=/127.0.0.1,port=4919,localport=5656] connected.
hostname: localhost
Ip address: 127.0.0.1:5656
Waiting for data...
Event from: localhost-> UPDATE: "@busch2.raleigh.ibm.com->NmosPingFail1",424,"9.27.132.139","","Omnibus","Precision Monitor Probe","Precision Monitor","@busch2.raleigh.ibm.com->NmosPingFail",5,"Ping fail for 9.27.132.139: ICMP reply timed out",07/05/07 12:29:12,07/03/07 18:02:31,07/05/07 12:29:09,07/05/07 12:29:09,0,1,194,8000,0,"",65534,0,0,0,"NmosPingFail",0,0,0,"","",0,0,"",0,"0",120,1,"9.27.132.139","","","","dyn9027132107.raleigh.ibm.com","","","",0,0,"","","NCOMS",424,""
Now my program makes it all nice and filters out the junk and resends the new string to the other server running here:
Enter port to run server on:
1234
Listening on : ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=1234]
Waiting for client connection...
Socket[addr=/127.0.0.1,port=4920,localport=1234] connected.
Parser client connected.
hostname: localhost
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Event from: localhost-> PacketType: UPDATE , SizeOfPacket: 577 , PacketID: 1, Identifer: UPDATE: "@busch2.raleigh.ibm.com->NmosPingFail1" , Serial: 424 , Node: "9.27.132.139" , NodeAlias: "" , Manager: "Omnibus" , Agent: "Precision Monitor Probe" , AlertGroup: "Precision Monitor" , AlertKey: "@busch2.raleigh.ibm.com->NmosPingFail" , Severity: 5 , Summary: "Ping fail for 9.27.132.139: ICMP reply timed out",StateChange: 07/05/07 12:29:12 , FirstOccurance: 07/03/07 18:02:31 , LastOccurance: 07/05/07 12:29:09 , InternalLast: 07/05/07 12:29:09 , EventId: "NmosPingFail" , LocalNodeAlias: "9.27.132.139"
Lenght of the string was: 579
The length of the final string I sent is 577 by using the string.length() function, but when I re-read the length after the send 2 more bytes got added, and now the length is 579.
I tested it for several cases and in all cases its adding 2 extra bytes.
Anyways, I think this is a bad solution to my problem but is the only one I could think of.
Any help would be great!

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(b) You don't need to do any of this. TCP doesn't lose data. If the receiver manages get as far as reading the line terminator when reading a line, the line will be complete. Otherwise it will get an exception.
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* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(String name1, Object value1, String name2, Object value2) throws IOException {
setParameter(name1, value1);
return post(name2, value2);
* post the POST request to the server, with the specified parameters
* @param name1 first parameter name
* @param value1 first parameter value
* @param name2 second parameter name
* @param value2 second parameter value
* @param name3 third parameter name
* @param value3 third parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(String name1, Object value1, String name2, Object value2, String name3, Object value3) throws IOException {
setParameter(name1, value1);
return post(name2, value2, name3, value3);
* post the POST request to the server, with the specified parameters
* @param name1 first parameter name
* @param value1 first parameter value
* @param name2 second parameter name
* @param value2 second parameter value
* @param name3 third parameter name
* @param value3 third parameter value
* @param name4 fourth parameter name
* @param value4 fourth parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(String name1, Object value1, String name2, Object value2, String name3, Object value3, String name4, Object value4) throws IOException {
setParameter(name1, value1);
return post(name2, value2, name3, value3, name4, value4);
* posts a new request to specified URL, with parameters that are passed in the argument
* @param parameters request parameters
* @return input stream with the server response
* @throws IOException
* @see setParameters
public InputStream post(URL url, Map parameters) throws IOException {
return new ClientHttpRequest(url).post(parameters);
* posts a new request to specified URL, with parameters that are passed in the argument
* @param parameters request parameters
* @return input stream with the server response
* @throws IOException
* @see setParameters
public InputStream post(URL url, Object[] parameters) throws IOException {
return new ClientHttpRequest(url).post(parameters);
* posts a new request to specified URL, with cookies and parameters that are passed in the argument
* @param cookies request cookies
* @param parameters request parameters
* @return input stream with the server response
* @throws IOException
* @see setCookies
* @see setParameters
public InputStream post(URL url, Map cookies, Map parameters) throws IOException {
return new ClientHttpRequest(url).post(cookies, parameters);
* posts a new request to specified URL, with cookies and parameters that are passed in the argument
* @param cookies request cookies
* @param parameters request parameters
* @return input stream with the server response
* @throws IOException
* @see setCookies
* @see setParameters
public InputStream post(URL url, String[] cookies, Object[] parameters) throws IOException {
return new ClientHttpRequest(url).post(cookies, parameters);
* post the POST request specified URL, with the specified parameter
* @param name parameter name
* @param value parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(URL url, String name1, Object value1) throws IOException {
return new ClientHttpRequest(url).post(name1, value1);
* post the POST request to specified URL, with the specified parameters
* @param name1 first parameter name
* @param value1 first parameter value
* @param name2 second parameter name
* @param value2 second parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(URL url, String name1, Object value1, String name2, Object value2) throws IOException {
return new ClientHttpRequest(url).post(name1, value1, name2, value2);
* post the POST request to specified URL, with the specified parameters
* @param name1 first parameter name
* @param value1 first parameter value
* @param name2 second parameter name
* @param value2 second parameter value
* @param name3 third parameter name
* @param value3 third parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(URL url, String name1, Object value1, String name2, Object value2, String name3, Object value3) throws IOException {
return new ClientHttpRequest(url).post(name1, value1, name2, value2, name3, value3);
* post the POST request to specified URL, with the specified parameters
* @param name1 first parameter name
* @param value1 first parameter value
* @param name2 second parameter name
* @param value2 second parameter value
* @param name3 third parameter name
* @param value3 third parameter value
* @param name4 fourth parameter name
* @param value4 fourth parameter value
* @return input stream with the server response
* @throws IOException
* @see setParameter
public InputStream post(URL url, String name1, Object value1, String name2, Object value2, String name3, Object value3, String name4, Object value4) throws IOException {
return new ClientHttpRequest(url).post(name1, value1, name2, value2, name3, value3, name4, value4);
With best regards!
MfG
Inno
Message was edited by:
Innocentus

How many users does HFM support?

Hi,
how many users does HFM support(Maximum)? and why we are choose HFM compare to Hyperion enterprise?
thanks
Edited by: user10919054 on May 18, 2009 3:07 AM

There is no limit, as long as you pay for the licenses and make sure you have a robust system to support user connectivity and demand.
Hyperion Enterprise is the previous Consolidation tool most commonly used by many companies. Think of HFM as the "New Generation"....

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