FETCH in OLAP_TABLE
I use FETCH with OLAP_TABLE to query a migrated Express-AW with SQL. Is it possible to limit the variable before data is fetched within the SQL statement (e.g. with OLAP_CONDITION)? If yes, how is it done, because I couldn't figure it out.
Thanks in advance and best regards,
Marco
hi marco,
in the section OLAP_TABLE , you can add limit statements before fetch .
as
TABLE(OLAP_TABLE(
'xademo DURATION SESSION',
'measure_table',
'limit time to first 1;FETCH time, geography, product, channel, analytic_cube_f.sales,
analytic_cube_f.costs,
LAG(analytic_cube_f.costs, 1, time, LEVELREL time_member_levelrel),
analytic_cube_f.sales - analytic_cube_f.costs',
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We created a cube containing dimensions
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using Oracle Analytical WorkSpace Manager.
Once Cube is created,
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Regards,
S.Vamsi KrishnaHey I got the Solution. It follows in this way :
A Cube is nothing but a Data Storage. Based on the Mapping we given it considers the data.
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Hi all,
What datatypes are supported by AW_EXPR ? Were can I find more info on AW_EXPR ?
These questions arise after having track down an error using the OLAP_TABLE function. I was trying to fetch the combined value for the boolean OLAP NASkip and NASkip2 settings using the following select statement :
select * from table(olap_table('', '', '', 'measure NASettings from aw_expr NASkip and NASkip2'))
Clearly AW_EXPR is needed here because I fetch an expression of existing OLAP objects and not an existing OLAP object itself. However, this statement fails.
For your info, both following statements run correctly :
select * from table(olap_table('', '', '', 'measure NASettings from aw_expr Convert(NASkip and NASkip2, Integer)'))
select * from table(olap_table('', '', '', 'measure NASettings from aw_expr Convert(NASkip and NASkip2, Text)'))
Also this is possible :
select * from table(olap_table('', '', '', 'measure NASkip from NASkip, measure NASkip2 from NASkip2'))
but then the AND has still to be executed ...
Thanks in advance for giving me some info on the possibilities/limitations of AW_EXPR.
MarkThe original error message is
select * from table(olap_table('', '', '', 'measure NASettings from aw_expr NASkip and NASkip2'))
ERROR at line 1:
ORA-29913: error in executing ODCITABLESTART callout
ORA-00600: internal error code, arguments: [17183], [0xA1A0B70], [], [], [], [], [], []
ORA-34100: Values of type NUMBER are expected.
Adding parenthesis doesn't change a thing. The error remains the same.
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Different results when fetching using Datamaps vs. Limitmaps
Hello,
I'm currently using dbms_aw package to execute DML commands into AW's and using the OLAP_TABLE Function to access data. I'm encountering some unexepected behavior when trying to issue a "sort".
Please consider the following:
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FMGLC Gum Liq Ctr
FMGLC24 Gum Liq Ctr 24s
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FMGLC Gum Liq Ctr
FMGLC24 Gum Liq Ctr 24s
FMGLC24RP Gum Liq Ctr 24s RP
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2 'MEASURE Time1 FROM PA.SHORTLABELF '))
TIME1
Total Product
Gum Liq Ctr
Gum Liq Ctr 24s
Gum Liq Ctr 24s RP
Mints X-S
5. Finally, if I decide to go back and use datamaps in conjunction with the OLAP_TABLE function my sorting has "stuck"
SQL> SELECT Text1 FROM TABLE(OLAP_TABLE('fmcalc DURATION SESSION','TempTable','fetch PA.SHORTLABELF', ''))
Text1
Gum Liq Ctr
Gum Liq Ctr 24s
Gum Liq Ctr 24s RP
Mints X-S
Total Product
So, I guess the workaround to the using limitmaps is to use datamaps. My question is why does this behavior occur when using limitmaps and are there other scenrios where similiar behaviour might occur? My main reason is that during my development as a rule I have tried to use limitmaps.
thanks
bradHi Brad,
The short answer here is that SQL does not guarantee the order of rows unless it is explicitly sorted (at the SQL level). From that point of view, you could do something like
exec dbms_aw.execute('lmt Product to first 5;rpr w 100 PA.SHORTLABELF')
SELECT * FROM TABLE(OLAP_TABLE('fmcalc DURATION SESSION','','',
2 'MEASURE Time1 FROM PA.SHORTLABELF ')) order by TIME1 ascending;
(The reason this is happening is the code responsible for returning rows in the OLAP_TABLE limit map implementation is tuned to return data in the most efficient order.)
I hope this helps,
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I came across with a vied error when creating the body of a method.
Problem:
I have a Type called Emp_typ and a corresponding table Emp_tab.
When I create the body of get method it gives the following error msg :
Compilation errors for PACKAGE BODY CHAMITH.EMP_API
Error: PLS-00386: type mismatch found at 'EMP_ROW' between FETCH cursor and INTO variables
Line: 9
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Get Method body :
function get(id_ number) return emp_tab%rowtype IS
cursor get_emp_rec IS
select * from emp_tab;
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open get_emp_rec;
fetch get_emp_rec into emp_row;
close get_emp_rec;
return emp_row;
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the Header text and Item text are getting displayed.
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Query help - Fetch employees working on two consecutive weekends(SAT/SUN)
Hello Gurus,
I have the following requirement and i need your help on this.
We have a table with all employees effort logged in for the days they have worked. a sample data is given below
TD_date Emp_id Effort Archive_month
2-Mar-13 123 8 Mar-13
9-Mar-13 123 8 Mar-13
2-Mar-13 213 4 Mar-13
3-Mar-13 213 4 Mar-13
24-Mar-13 213 8 Mar-13
9-Mar-13 312 4 Mar-13
10-Mar-13 312 4 Mar-13
16-Mar-13 312 8 Mar-13
In the above sample data, we have employee 123 who worked on consecutive SATURDAY and 312 who worked on consecutive weekends (9th, 10th and 16th March) but the employee 213 worked on 1st weekend and 4th weekend of the month(Archive_month). So the output should return the employees who worked on two consecutive weekends as below.
Emp_id
123
312
I have written a query to fetch all employees who worked only on a SAT or SUN which is given below, but i am not able to return the employees who worked on consecutive weekends and i need your help.
select emp_id, count(*)
from timesheet_archive
where archive_month = '03/2013'
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group by emp_id having count(*) > 1
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Please help me with an approach in SQL or PL/SQL to generate a report of employees who worked on two consecutive weekends.
Thanks,
Edited by: 999145 on Apr 9, 2013 11:08 PM
Edited by: 999145 on Apr 9, 2013 11:10 PMhi Manik,
thanks for your response!!
Please find the below create and insert scripts for your testing.
I am also validating the output with my requirement. Thanks for your help!
create table timesheet_archive as
(TD_date date,
Emp_id number(19,0),
Effort Float,
Archive_month varchar2);
insert into timesheet_archive values (to_date('2-MAR-2013','dd-MON-yyyy'), 123,8,'03/2013');
insert into timesheet_archive values (to_date('9-MAR-2013','dd-MON-yyyy'), 123,8,'03/2013');
insert into timesheet_archive values (to_date('2-MAR-2013','dd-MON-yyyy'), 213,4,'03/2013');
insert into timesheet_archive values (to_date('3-MAR-2013','dd-MON-yyyy'), 213,4,'03/2013');
insert into timesheet_archive values (to_date('24-MAR-2013','dd-MON-yyyy'), 213,8,'03/2013');
insert into timesheet_archive values (to_date('9-MAR-2013','dd-MON-yyyy'), 321,4,'03/2013');
insert into timesheet_archive values (to_date('10-MAR-2013','dd-MON-yyyy'), 321,4,'03/2013');
insert into timesheet_archive values (to_date('16-MAR-2013','dd-MON-yyyy'), 321,8,'03/2013');
insert into timesheet_archive values (to_date('2-MAR-2013','dd-MON-yyyy'), 124,8,'03/2013');
insert into timesheet_archive values (to_date('9-MAR-2013','dd-MON-yyyy'), 124,8,'03/2013');
insert into timesheet_archive values (to_date('16-MAR-2013','dd-MON-yyyy'), 124,4,'03/2013');
insert into timesheet_archive values (to_date('23-MAR-2013','dd-MON-yyyy'), 124,4,'03/2013');
insert into timesheet_archive values (to_date('16-MAR-2013','dd-MON-yyyy'), 241,8,'03/2013');
insert into timesheet_archive values (to_date('23-MAR-2013','dd-MON-yyyy'), 241,4,'03/2013');
insert into timesheet_archive values (to_date('24-MAR-2013','dd-MON-yyyy'), 241,4,'03/2013');
insert into timesheet_archive values (to_date('2-MAR-2013','dd-MON-yyyy'), 412,8,'03/2013');
insert into timesheet_archive values (to_date('3-MAR-2013','dd-MON-yyyy'), 412,8,'03/2013');
insert into timesheet_archive values (to_date('30-MAR-2013','dd-MON-yyyy'), 412,8,'03/2013');
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IPhone core data - fetched managed objects not being autoreleased on device (fine on simulator)
I'm currently struggling with a core data issue with my app that defies (my) logic. I'm sure I'm doing something wrong but can't see what. I am doing a basic executeFetchRequest on my core data entity, but the array of managed objects returned never seems to be released ONLY when I run it on the iPhone, under the simulator it works exactly as expected. This is despite using an NSAutoreleasePool to ensure the memory footprint is minimised. I have also checked with Instruments and there are no leaks, just ever increasing allocations of memory (by '[NSManagedObject(_PFDynamicAccessorsAndPropertySupport) allocWithEntity:]'). In my actual app this eventually leads to a didReceiveMemoryWarning call. I have produced a minimal program that reproduces the problem below. I have tried various things such as faulting all the objects before draining the pool, but with no joy. If I provide an NSError pointer to the fetch no error is returned. There are no background threads running.
+(natural_t) get_free_memory {
mach_port_t host_port;
mach_msg_type_number_t host_size;
vm_size_t pagesize;
host_port = mach_host_self();
host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
host_page_size(host_port, &pagesize);
vm_statistics_data_t vm_stat;
if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) != KERN_SUCCESS) {
NSLog(@"Failed to fetch vm statistics");
return 0;
/* Stats in bytes */
natural_t mem_free = vm_stat.free_count * pagesize;
return mem_free;
- (void)viewDidLoad
[super viewDidLoad];
// Set up the edit and add buttons.
self.navigationItem.leftBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject)];
self.navigationItem.rightBarButtonItem = addButton;
[addButton release];
// Obtain the Managed Object Context
NSManagedObjectContext *context = [(id)[[UIApplication sharedApplication] delegate] managedObjectContext];
// Check the free memory before we start
NSLog(@"INITIAL FREEMEM: %d", [RootViewController get_free_memory]);
// Loop around a few times
for(int i=0; i<20; i++) {
// Create an autorelease pool just for this loop
NSAutoreleasePool *looppool = [[NSAutoreleasePool alloc] init];
// Check the free memory each time around the loop
NSLog(@"FREEMEM: %d", [RootViewController get_free_memory]);
// Create a minimal request
NSEntityDescription *entityDescription = [NSEntityDescription
entityForName:@"TestEntity" inManagedObjectContext:context];
// 'request' released after fetch to minimise use of autorelease pool
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:entityDescription];
// Perform the fetch
NSArray *array = [context executeFetchRequest:request error:nil];
[request release];
// Drain the pool - should release the fetched managed objects?
[looppool drain];
// Check the free menory at the end
NSLog(@"FINAL FREEMEM: %d", [RootViewController get_free_memory]);
When I run the above on the simulator I get the following output (which looks reasonable to me):
2011-06-06 09:50:28.123 renniksoft[937:207] INITIAL FREEMEM: 14782464
2011-06-06 09:50:28.128 renniksoft[937:207] FREEMEM: 14807040
2011-06-06 09:50:28.135 renniksoft[937:207] FREEMEM: 14831616
2011-06-06 09:50:28.139 renniksoft[937:207] FREEMEM: 14852096
2011-06-06 09:50:28.142 renniksoft[937:207] FREEMEM: 14872576
2011-06-06 09:50:28.146 renniksoft[937:207] FREEMEM: 14897152
2011-06-06 09:50:28.149 renniksoft[937:207] FREEMEM: 14917632
2011-06-06 09:50:28.153 renniksoft[937:207] FREEMEM: 14938112
2011-06-06 09:50:28.158 renniksoft[937:207] FREEMEM: 14962688
2011-06-06 09:50:28.161 renniksoft[937:207] FREEMEM: 14983168
2011-06-06 09:50:28.165 renniksoft[937:207] FREEMEM: 14741504
2011-06-06 09:50:28.168 renniksoft[937:207] FREEMEM: 14770176
2011-06-06 09:50:28.174 renniksoft[937:207] FREEMEM: 14790656
2011-06-06 09:50:28.177 renniksoft[937:207] FREEMEM: 14811136
2011-06-06 09:50:28.182 renniksoft[937:207] FREEMEM: 14831616
2011-06-06 09:50:28.186 renniksoft[937:207] FREEMEM: 14589952
2011-06-06 09:50:28.189 renniksoft[937:207] FREEMEM: 14610432
2011-06-06 09:50:28.192 renniksoft[937:207] FREEMEM: 14630912
2011-06-06 09:50:28.194 renniksoft[937:207] FREEMEM: 14651392
2011-06-06 09:50:28.197 renniksoft[937:207] FREEMEM: 14671872
2011-06-06 09:50:28.200 renniksoft[937:207] FREEMEM: 14692352
2011-06-06 09:50:28.203 renniksoft[937:207] FINAL FREEMEM: 14716928
However, when I run it on an actual iPhone 4 (4.3.3) I get the following result:
2011-06-06 09:55:54.341 renniksoft[4727:707] INITIAL FREEMEM: 267927552
2011-06-06 09:55:54.348 renniksoft[4727:707] FREEMEM: 267952128
2011-06-06 09:55:54.702 renniksoft[4727:707] FREEMEM: 265818112
2011-06-06 09:55:55.214 renniksoft[4727:707] FREEMEM: 265355264
2011-06-06 09:55:55.714 renniksoft[4727:707] FREEMEM: 264892416
2011-06-06 09:55:56.215 renniksoft[4727:707] FREEMEM: 264441856
2011-06-06 09:55:56.713 renniksoft[4727:707] FREEMEM: 263979008
2011-06-06 09:55:57.226 renniksoft[4727:707] FREEMEM: 264089600
2011-06-06 09:55:57.721 renniksoft[4727:707] FREEMEM: 263630848
2011-06-06 09:55:58.226 renniksoft[4727:707] FREEMEM: 263168000
2011-06-06 09:55:58.726 renniksoft[4727:707] FREEMEM: 262705152
2011-06-06 09:55:59.242 renniksoft[4727:707] FREEMEM: 262852608
2011-06-06 09:55:59.737 renniksoft[4727:707] FREEMEM: 262389760
2011-06-06 09:56:00.243 renniksoft[4727:707] FREEMEM: 261931008
2011-06-06 09:56:00.751 renniksoft[4727:707] FREEMEM: 261992448
2011-06-06 09:56:01.280 renniksoft[4727:707] FREEMEM: 261574656
2011-06-06 09:56:01.774 renniksoft[4727:707] FREEMEM: 261148672
2011-06-06 09:56:02.290 renniksoft[4727:707] FREEMEM: 260755456
2011-06-06 09:56:02.820 renniksoft[4727:707] FREEMEM: 260837376
2011-06-06 09:56:03.334 renniksoft[4727:707] FREEMEM: 260395008
2011-06-06 09:56:03.825 renniksoft[4727:707] FREEMEM: 259932160
2011-06-06 09:56:04.346 renniksoft[4727:707] FINAL FREEMEM: 259555328
The amount of free memory reduces each time round the loop in proportion to the managed objects I fetch e.g. if I fetch twice as many objects then the free memory reduces twice as quickly - so I'm pretty confident it is the managed objects that are not being released. Note that the entities that are being fetched are very basic, just two attributes, a string and a 16 bit integer. There are 1000 of them being fetched in the examples above. The code I used to generate them is as follows:
// Create test entities
for(int i=0; i<1000; i++) {
id entity = [NSEntityDescription insertNewObjectForEntityForName:@"TestEntity" inManagedObjectContext:context];
[entity setValue:[NSString stringWithFormat:@"%d",i] forKey:@"name"];
[entity setValue:[NSNumber numberWithInt:i] forKey:@"value"];
if (![context save:nil]) {
NSLog(@"Couldn't save");
If anyone can explain to me what is going on I'd be very grateful! This issue is the only only one holding up the release of my app. It works beautifully on the simulator!!
Please let me know if there's any more info I can supply.Update: I modified the above code so that the fetch (and looppool etc.) take place when a timer fires. This means that the fetches aren't blocked in viewDidLoad.
The result of this is that the issue happens exactly as before, but the applicationDidReceiveMemoryWarning is fired as expected:
2011-06-08 09:54:21.024 renniksoft[5993:707] FREEMEM: 6131712
2011-06-08 09:54:22.922 renniksoft[5993:707] Received memory warning. Level=2
2011-06-08 09:54:22.926 renniksoft[5993:707] applicationDidReceiveMemoryWarning
2011-06-08 09:54:22.929 renniksoft[5993:707] FREEMEM: 5615616
2011-06-08 09:54:22.932 renniksoft[5993:707] didReceiveMemoryWarning
2011-06-08 09:54:22.935 renniksoft[5993:707] FREEMEM: 5656576 -
RFC fetching data from table which is not commited
Hi Experts,
I have a query regarding commit work.Below is the RFC that i have written
FUNCTION ZBAPI_CREATE.
*"*"Local Interface:
*" TABLES
*" IT_ZABAP_RFC STRUCTURE ZBAPI_RFC_STR OPTIONAL
*" RETURN STRUCTURE BAPIRET2 OPTIONAL
CALL FUNCTION 'ZBO_BAPI_CREATE'
TABLES
IT_ZABAP_RFC = IT_ZABAP_RFC
RETURN = return
Break-point.
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CALL FUNCTION 'ZBAPI_SEARCH_RANGE'
* EXPORTING
* IS_STR =
TABLES
ET_TAB = lt
* RETURN =
ENDFUNCTION.
here in first RFC call i am creating a record in ZTABLE , and then at break-point
i check the ZTABLE where it does not create any record because data is not commited into ZTABLE upto this point, but just after it i have written code for fetching data from ZTABLE but i am able to get this new record in lt.
Can anybody please explain that from where this serach RFC is providing data because inside serach i am simply selecting data from ZTABLE.
Regards,
Abhishek Bajpai
Edited by: ABHISHEK BAJPAI on Jan 28, 2009 1:12 PMHi Thomas,
Thanks for reply , i checked in ZTABLE ,before search RFC call data is not there but if i commit explicitly only then it is showing data in ZTABLE. Actually my requirement is different -
I have two RFCs 1. Create 2. Search , Now from web dynpro user will call first Create RFCs but at this point it should not insert record in ZTABLE and just after it user will call another search RFC and in this search he should be able to get these newly created records.
I want to have the functionality which a user gets when working with normal database front end like SQLPLus for Oracle. In these scenarios we see that whenever user does any insert or update the data sits in the table but still it is not committed. So there he fires Select query he sees the inserted data. But if he logs off from SQL PLUS and then logs in again, and fires Select query he does not see the data as it was not committed. I want a similiar functionalty in which if user inserts the data through Create RFC and fires the Select query through Search RFC then he can see the newly Created data also even though this data is not committed.
Although if i call create RFC in update task it will not update ZTABLE but in this situation , if user will call search RFC he will not be able to get newly created records.
So my requirement is that i should be able to get those records which are not commited in ZTABLE .If you have still any doubt regarding my question then please let me know.
Regards,
Abhishek -
Not able to fetch the data by Virtual Cube
Hi Experts,
My requirement is I need to fetch the data from Source System (From Data base table) by using Virtual Cube.
What I have done is I have created Virtual Cube and created corresponding Function Module in Source System.
That Function MOdule is working fine, if Data base table is small in Source System.But If data base table contains huge amount of data (millions of record), I am not able to fetch the data.
Below is the code I have incorporated in my function module.
c_th_mapping TYPE CL_RSDRV_EXTERNAL_IPROV_SRV=>TN_TH_IOBJ_FLD_MAPPING.
DATA:
l_s_map TYPE CL_RSDRV_EXTERNAL_IPROV_SRV=>TN_S_IOBJ_FLD_MAPPING.
l_s_map-iobjnm = '0PARTNER'.
l_s_map-fldnm = 'PARTNER'.
insert l_s_map into table l_th_mapping.
create object l_r_srv
exporting
i_tablnm = '/SAPSLL/V_BLBP'
i_th_iobj_fld_mapping = l_th_mapping.
l_r_srv->open_cursor(
i_t_characteristics = characteristics[]
i_t_keyfigures = keyfigures[]
i_t_selection = selection[] ).
l_r_srv->fetch_pack_data(
importing
e_t_data = data[] ).
return-type = 'S'.
In the above function Module,Internal table L_TH_MAPPING contains Info Objects from Virtual Cube and corresponding field from Underlying data base table.
The problem where I am facing is, in the method FETCH_PACK_DATA, initially program is trying to fetch all the recordsfrom data base table to internal table.If Data base table so lagre, this logic is not working.
So would you please help me how to handle these kind of issues.Hi Experts,
My requirement is I need to fetch the data from Source System (From Data base table) by using Virtual Cube.
What I have done is I have created Virtual Cube and created corresponding Function Module in Source System.
That Function MOdule is working fine, if Data base table is small in Source System.But If data base table contains huge amount of data (millions of record), I am not able to fetch the data.
Below is the code I have incorporated in my function module.
c_th_mapping TYPE CL_RSDRV_EXTERNAL_IPROV_SRV=>TN_TH_IOBJ_FLD_MAPPING.
DATA:
l_s_map TYPE CL_RSDRV_EXTERNAL_IPROV_SRV=>TN_S_IOBJ_FLD_MAPPING.
l_s_map-iobjnm = '0PARTNER'.
l_s_map-fldnm = 'PARTNER'.
insert l_s_map into table l_th_mapping.
create object l_r_srv
exporting
i_tablnm = '/SAPSLL/V_BLBP'
i_th_iobj_fld_mapping = l_th_mapping.
l_r_srv->open_cursor(
i_t_characteristics = characteristics[]
i_t_keyfigures = keyfigures[]
i_t_selection = selection[] ).
l_r_srv->fetch_pack_data(
importing
e_t_data = data[] ).
return-type = 'S'.
In the above function Module,Internal table L_TH_MAPPING contains Info Objects from Virtual Cube and corresponding field from Underlying data base table.
The problem where I am facing is, in the method FETCH_PACK_DATA, initially program is trying to fetch all the recordsfrom data base table to internal table.If Data base table so lagre, this logic is not working.
So would you please help me how to handle these kind of issues. -
Fetching data in R/3 via portal application(JSPDYNPage)
Hello Everyone,
I want to fetch data in R/3 server via portal application(JSPDYNPAGE) & display that data as an output of the portal application in TABLEVIEW format. Can anyone guide me on this (I:e-How to connect to R/3 server via portal component & fetch data & display the same). any similar application developed for a reference will be of great help.
Thanks,
ChetanHi Chetan,
I hope you know how to create a JSP Dyn Page, anyway I will explain it briefly.
Open NWDS->File->New->Create a portal application project->Specify the project name
right click on the project->New->Create a new portal application object->Portal component->Select JSP dyn page-(By default it creates class and all)->this is available under description on the right column-
Now goto the Java page->see the functions->attach zip and jar files(HTMLB plugin)
->Right click on the project->goto properties->Java build path->Add external jars->Select com.sap.portal.htmlbbridge.zip and htmlb.jar
This is how JSP page is created.
Now we want to do establish connection with R/3. That I will discuss in the next session.
Award points if this was helpful......
All the best for you
Regards,
Arun Jacob. -
I am moderately new to Labview and definitely new to the HSDIO platform, so my apologies if this is either impossible or silly!
I am working on a system that consists of multiple PXI-6548 modules that are synchronized using T-CLK and I am using hardware compare. The issue I have is that I need to be able to capture ALL the failing sample error locations from the hardware compare fetch VI... By ALL I mean potentially many, many more fails than the 4094 sample error depth present on the modules.
My strategy has been to break up a large waveform into several subsets that are no larger than 4094 samples (to guarantee that I can't overflow the error FIFO) and then fetch the errors for each block. After the fetch is complete I send a software reference trigger that is subsequently exported to a scriptTrigger that tells the hardware it is OK to proceed (I do this because my fetch routine is in a while loop and Labview says that the "repeated capbility has not yet been defined" if I try to use a software script trigger in a loop).
This works fine, but it is also conceivable that I could have 0 errors in 4094 samples. In such a case what I would like to do is to skip the fetching of the hardware compare errors (since there aren't any) and immediately begin the generation of the next block of the waveform. That is, skip the time where I have to wait for a software trigger.
I tried to do this by exporting the sample error event to a PFI and looping that PFI back in to generate a script trigger. What I thought would happen was that the script trigger would get asserted (and stay asserted) if there was ever a sample error in a block, then I could clear the script trigger in my script. However, in debug I ended up exporting this script trigger back out again and saw that it was only lasting for a few hundred nanoseconds (in a case where there was only 1 injected sample error)... The sample error event shows up as a 1-sample wide pulse.
So, my question is this: is there a way to set a flag to indicate that at least one sample error occurred in a given block that will persist until I clear it in my script? What I want to do is below...
generate wfmA subset (0, 4094)
if scriptTrigger1
clear scriptTrigger1
wait until scriptTrigger0
end
clear scriptTrigger0
generate wfmA subset (4094, 4094)
I want scriptTrigger1 to be asserted only if there was a sample error in any block of 4094 and it needs to stay asserted until it is cleared in the script. scriptTrigger0 is the software trigger that will be sent only if a fetch is performed. Again, the goal being that if there were no sample errors in a block, the waiting for scriptTrigger0 will not occur.
I am probably going about it all wrong (obviously since it doesn't work), so any help would be much appreciated!Please disregard most of my previous post... after some more debug work today I have been able to achieve the desired effect at slower frequencies. I did straighten out my script too:
generate wfmA
if scriptTrigger1
clear scriptTrigger0
wait until scriptTrigger0
end if
generate wfmA
scriptTrigger1 = sample error event flag
scriptTrigger0 = software trigger (finished fetching error backlog in SW)
However, I am still having a related issue.
I am exporting the Sample Error Event to a PFI line, looping that back in on another PFI line, and having the incoming version of the Sample Error Event generate a script trigger. My stimulus has a single injected sample error for debug. For additional debug I am exporting the script trigger to yet another PFI; I have the sample error event PFI and the script trigger PFI hooked up to a scope.
If I run the sample clock rate less than ~133MHz everything works... I can see the sample error event pulse high for one clock period and the script trigger stays around until it is consumed by my script's if statement.
Once I go faster than that I am seeing that the script trigger catches the sample error event occasionally. The faster I go, the less often it is caught. If I widen out the error to be 2 samples wide then it will work every time even at 200MHz.
I have tried PFI0-3 and the PXI lines as the output terminal for the sample error event and they all have the same result (this implies the load from the scope isn't the cause).
I don't know what else to try? I can't over sample my waveform because I need to run a true 200MHz. I don't see anything that would give me any other control over the sample error event in terms of its pulsewidth or how to export it directly to a script trigger instead of how I'm doing it.
Any other ideas?
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