How to browse MQ queue with variable length messages?

I am trying to browse messages on an Websphere MQ queue using PL/SQL and Oracle Gateway for Websphere MQ (both 11g2)
However, the (XML) messages are of variable length: they can be less than 1k or over 100k.
I found that the pgm.mqget procedure is overloaded, so if the message is longer than 32k, you need to use the PGM.MQGET_BUFFER, and else you use the RAW variable.
However, in order to know the length, you’ll need to browse the message first, to get the message length.
If I try to get a message using the buffer variable, and the messsage is 32k or shorter, the program aborts with
ORA-28511: lost RPC connection to heterogeneous remote agent using SID= +<db_link_name>+
ORA-06512: at "SYS.PGM", line 390
ORA-06512: at "SYS.PGM", line 849
If I try to browse a message longer than 32k using the RAW variable, the ‘mqget’ statement just hangs. I tried with and without setting the MQGMO option ‘mqgmo_acccept_truncated_message’.
Any advise on how to solve this issue?
Arnold

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How to tokenize a column with variable length string

I have a question regarding tokenizing string in a column I have table like
id list
1 i love dogs
2 i like cats and dogs
and so on
it should be converted to
id list
1 i
1 love
1 dogs
2 i
2 like
2 cates
2 and
2 dogs
How do I tokenize this? I tried using this code inside cursor and procedure
SELECT id, regexp_substr(str, '[^ ]+', 1, level) TOKEN from test CONNECT by level <= length(regexp_replace (str, '[^ ]+')) + 1;
but this is very slow when called from java. Is there any other alternative?
Thanks

69edfef1-01fd-49c3-b83d-ece76195d26c wrote:
I have a question regarding tokenizing string in a column I have table like
id list
1 i love dogs
2 i like cats and dogs
and so on
it should be converted to
id list
1 i
1 love
1 dogs
2 i
2 like
2 cates
2 and
2 dogs
How do I tokenize this? I tried using this code inside cursor and procedure
SELECT id, regexp_substr(str, '[^ ]+', 1, level) TOKEN from test CONNECT by level <= length(regexp_replace (str, '[^ ]+')) + 1;
but this is very slow when called from java. Is there any other alternative?
Thanks
The reason yours is slow is because you don't have sufficient connect by conditions to restrict the iterations properly...
e.g. What you are doing...
SQL> ed
Wrote file afiedt.buf
1 with t as (select 1 as id, 'i love dogs' list from dual union all
2             select 2, 'i like cats and dogs' from dual union all
3             select 3,'precipitevolissimevolmente' from dual)
4 --
5 --
6 --
7 SELECT id
8        ,regexp_substr(list, '[^ ]+', 1, level) TOKEN
9 from t
10* CONNECT by level <= length(regexp_replace (list, '[^ ]+')) + 1
SQL> /
        ID TOKEN
         1 i
         1 love
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
         2 like
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
         2 i
         1 love
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
         2 like
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
         3 precipitevolissimevolmente
         1 love
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
         2 like
         1 dogs
         2 and
         2 dogs
         2 cats
         2 and
         2 dogs
45 rows selected.
And with additional connect by criteria...
SQL> ed
Wrote file afiedt.buf
1 with t as (select 1 as id, 'i love dogs' list from dual union all
2             select 2, 'i like cats and dogs' from dual union all
3             select 3,'precipitevolissimevolmente' from dual)
4 --
5 --
6 --
7 SELECT id
8        ,regexp_substr(list, '[^ ]+', 1, level) TOKEN
9 from t
10 CONNECT by level <= length(regexp_replace (list, '[^ ]+')) + 1
11         and id = prior id
12*        and prior sys_guid() is not null
SQL> /
        ID TOKEN
         1 i
         1 love
         1 dogs
         2 i
         2 like
         2 cats
         2 and
         2 dogs
         3 precipitevolissimevolmente
9 rows selected.

How to insert a table with variable rows in smart form

Hi all,
How to insert a table with variable rows in smart form?
Any help would be appreciated.
Regards,
Mahesh.

Hi,
Right click the mouse->create->table
If you want 5 columns, you need to declare 5 cells in one line type of the table
Click on Table -> Details, then do the following
Line Type 1 2 3 4 5
L1 2mm 3mm etc
Here specify the width of the columns as many as you want..
then in the header/main area of the table, click create Table Line, Rowtype is L1, automatically 5 cells will come,In each cell create a text element, display the variable to be printed there.

How to run execute immdiate with variables

Hi friends,
How to run execute immdiate with variables in v_stmt below?
I dont know how to declare the value of i here.
Set serveroutput on;
DECLARE
   i        VARCHAR (20);
   v_stmt   VARCHAR2 (100);
   CURSOR c
   IS
      SELECT sqlid FROM temp1;
BEGIN
   OPEN c;
   LOOP
      FETCH c INTO i;
      EXIT WHEN c%NOTFOUND;
      DBMS_OUTPUT.put_line (i);
      v_stmt := 'select * from table(dbms_xplan.display_cursor('&i',null))'
      execute immediate v_stmt;
   END LOOP;
   CLOSE c;
END;
/Regds,
Kunwar.

You first need to use a bind variable (named ':v' in SQL statement in my example):
set serveroutput on;
DECLARE
   i        VARCHAR (20);
   v_stmt   VARCHAR2 (100);
   CURSOR c
   IS
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      SELECT sql_id FROM v$sql where child_number > 2;
BEGIN
   OPEN c;
   LOOP
      FETCH c INTO i;
      EXIT WHEN c%NOTFOUND;
      DBMS_OUTPUT.put_line (i);
      v_stmt := 'select * from table(dbms_xplan.display_cursor(:v,null))';
      execute immediate v_stmt using i;
   END LOOP;
   CLOSE c;
END;
/However because your SELECT statement returns several rows you need to adapt your code to process all rows returned (as already suggested in first reply to your message).
Instead of using PL/SQL, I recommend to generate a SQL file using only SQL and then to run the generated SQL file.
For example:
spool edx.sql
set serveroutput on
declare
v_stmt varchar2(100);
v_q char(1):='''';
begin
dbms_output.put_line('spool edx.log');
for s in (select sql_id from v$sql where child_number >2)
loop
dbms_output.put_line('select * from table(dbms_xplan.display_cursor(' || v_q || s.sql_id || v_q || ',null));');
end loop;
dbms_output.put_line('exit');
end;
spool ofThis generates a SQL file similar to :
spool edx.log
select * from table(dbms_xplan.display_cursor('5rygsj4dbw6jt',null));
select * from table(dbms_xplan.display_cursor('5rygsj4dbw6jt',null));
select * from table(dbms_xplan.display_cursor('5rygsj4dbw6jt',null));
select * from table(dbms_xplan.display_cursor('fsbqktj5vw6n9',null));
select * from table(dbms_xplan.display_cursor('6q42j0018w7t8',null));
select * from table(dbms_xplan.display_cursor('a5mmhrrnpwjsc',null));
select * from table(dbms_xplan.display_cursor('3c1kubcdjnppq',null));
select * from table(dbms_xplan.display_cursor('3c1kubcdjnppq',null));
select * from table(dbms_xplan.display_cursor('9gkq7rruycsjp',null));
select * from table(dbms_xplan.display_cursor('f0wj261bm8snd',null));
select * from table(dbms_xplan.display_cursor('ab3swhv5g138y',null));
select * from table(dbms_xplan.display_cursor('6vgvyh4xw9c5g',null));
select * from table(dbms_xplan.display_cursor('ak5crjygnpk60',null));
select * from table(dbms_xplan.display_cursor('9p6bq1v54k13j',null));
select * from table(dbms_xplan.display_cursor('19x1189chq3xd',null));
select * from table(dbms_xplan.display_cursor('7sx5p1ug5ag12',null));
select * from table(dbms_xplan.display_cursor('730vdzhng6m6g',null));
select * from table(dbms_xplan.display_cursor('730vdzhng6m6g',null));
select * from table(dbms_xplan.display_cursor('0v3dvmc22qnam',null));
select * from table(dbms_xplan.display_cursor('0v3dvmc22qnam',null));
select * from table(dbms_xplan.display_cursor('a1zv6wju3ftgv',null));
select * from table(dbms_xplan.display_cursor('7ng34ruy5awxq',null));
select * from table(dbms_xplan.display_cursor('7ng34ruy5awxq',null));
select * from table(dbms_xplan.display_cursor('b2gnxm5z6r51n',null));
select * from table(dbms_xplan.display_cursor('b2gnxm5z6r51n',null));
select * from table(dbms_xplan.display_cursor('g4gp07gt2z920',null));
select * from table(dbms_xplan.display_cursor('1gu8t96d0bdmu',null));
select * from table(dbms_xplan.display_cursor('g00cj285jmgsw',null));
select * from table(dbms_xplan.display_cursor('g00cj285jmgsw',null));
select * from table(dbms_xplan.display_cursor('g00cj285jmgsw',null));
select * from table(dbms_xplan.display_cursor('bn4b3vjw2mj3u',null));
select * from table(dbms_xplan.display_cursor('38243c4tqrkxm',null));
select * from table(dbms_xplan.display_cursor('2abjfnvy5rkyg',null));
select * from table(dbms_xplan.display_cursor('350f5yrnnmshs',null));
select * from table(dbms_xplan.display_cursor('350f5yrnnmshs',null));
select * from table(dbms_xplan.display_cursor('3s1yukp05bzg6',null));
select * from table(dbms_xplan.display_cursor('3s1yukp05bzg6',null));
select * from table(dbms_xplan.display_cursor('1tgukkrqj3zhw',null));
exit
PL/SQL procedure successfully completed.Edited by: P. Forstmann on 20 mars 2013 19:06
Edited by: P. Forstmann on 20 mars 2013 19:33

How to deal with variable length data struct in C/JNI

I have another JNI related question. How do you handle variable length
data structures in Java and pointer to a pointer?
Basically, I have a backend in C which has records but we don't know
how many. The API looks like
typedef struct rec_list_s {
int rec_list_cnt;
rec_list_data_t rec_list_data[1];
} rec_list_t;
int rec_list_show(void handle, rec_list_t *list_ptr);
/* Code snippet for rec_list_show */
int rec_list_show(void handle, rec_list_t *list_ptr)
rec_list_t *ptr;
sz = sizeof (rec_list_t) +
((record_count - 1) * sizeof (rec_list_data_t));
ptr = malloc(sz);
/* fill the data */
*list_ptr = ptr;
return (0);
So I need to wrap rec_list_show() in JNI call so I can have Java call
it. How do i pass a pointer to a pointer from Java? I tried in the
native C code for JNI to return the pointer to pointer as a result
and store in a member in the Java class rec_list_t and then I pass
that to JNI call for rec_list_show. The C backend code was fine
since it got the pointer to pointer but Java become unhappy when
the object it was referencing changed memory location (I suspect
the garbage collection becomes unhappy).
So what would be a good way to deal with this kind of code?
Thanks,
Sunay
Edited by: st9 on Aug 30, 2010 5:47 PM

I did not imply that you don't know C but you are implying that I don't understand C. Perhaps
google Sunay Tripathi and click I am feeling lucky so that we don't get into teaching C
discussions :) On the other hand, I am definitely looking for someone to teach me Java
otherwise I wouldn't be asking.
Anyway, let me explain again. The sample function rec_list_show() runs on the backend. It
is a different process with a different VM space. It of course knows the size of the array
and what to fill in. As a caller to that API (which is a separate process), I don't know
what that size is but I need to get the size and corresponding data in one shot because
the backend locks the table when its providing me the info to make sure its synchronous.
Now I (the Java process) needs to get that count and data in one shot. Since the C library
underneath me (wrapped around my JNI interface) has private IPC mechanism to copy
the contiguous memory from the backend into my memory space, all I need is to provide
a pointer to a pointer which gets filled in by backend and is available to my process. So
my equivalent C frontend just passes a pointer to a pointer and casts the return value in
rec_list_t. The rec_list_cnt tells it how many members it got. The first member is part of
the struct itself but then following members are right after.
Another way to help you understand this is with this code snippet from front end C program
rec_list_t     *ptr, *save_ptr;
rec_list_data_t *data_ptr;
int          cnt;
save_ptr = ptr = malloc(sizeof(rec_list_t));
rec_list_show(handle, &ptr);
assert(save_ptr != ptr);
cnt = ptr->rec_list_cnt;
for (i = 0; i < cnt; i++) {
     data_ptr = &ptr->rec_list_data;
Notice the assert(). Also notice the for loop. How do I expect to walk more that one
member when rec_list_data is a fixed size array of one member?typedef struct rec_list_s {
     int               rec_list_cnt;
     rec_list_data_t          rec_list_data[1];
} rec_list_t;
Anyway, I do understand that Java will not allow me to get a reference to a long and
how Java memory management works. But the JNI native implementation is C
and I was wondering if people have managed to do some tricks there between C
and Java.

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Hi friends,
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OBJ01,,,,,,,,,,4,3
Some fileds only have 1 ',' as the delimiter, but some of them have multiple ','.
How can I handle it in the content conversion?
Regards,
Bean

Hi Bing,
Plz do refer the following blogs u will get an idea:
File content conversion Blogs
/people/venkat.donela/blog/2005/03/02/introduction-to-simplefile-xi-filescenario-and-complete-walk-through-for-starterspart1
/people/venkat.donela/blog/2005/03/03/introduction-to-simple-file-xi-filescenario-and-complete-walk-through-for-starterspart2
/people/arpit.seth/blog/2005/06/02/file-receiver-with-content-conversion
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/people/shabarish.vijayakumar/blog/2005/08/17/nab-the-tab-file-adapter
/people/venkat.donela/blog/2005/03/02/introduction-to-simplefile-xi-filescenario-and-complete-walk-through-for-starterspart1
/people/venkat.donela/blog/2005/03/03/introduction-to-simple-file-xi-filescenario-and-complete-walk-through-for-starterspart2
/people/venkat.donela/blog/2005/06/08/how-to-send-a-flat-file-with-various-field-lengths-and-variable-substructures-to-xi-30
/people/anish.abraham2/blog/2005/06/08/content-conversion-patternrandom-content-in-input-file
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/people/arpit.seth/blog/2005/06/02/file-receiver-with-content-conversion
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$src = 'C:\Temp'
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i would like to copy the tablet zip file which is placed in in $src to be copied in $TabletzipPath.
i am using tab* because this file name changes continuously. so if i give a fix name for example tablet1.zip than it works fine.

Not sure if the wildcard will work without seeing how you're using the variable.
That said, I can say that it looks like you're missing the backslash between the $src path and the wildcard filename. As-is the above code assigns a value to $TabletzipPath of "C:\temptab*.zip" instead of what you are likely expecting ("C:\temp\tab*.zip")
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jasonwarren.ca
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I try to create a array like that:
Object[][] data;
data = new Object[] [];
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Apparently I must specify the dimension of my array
So I have done like that :
Object[][] data;
data = new Object[3] [3];
And that work!
But the problem is when I need to add extra elements to my array.
If I write :
data[4][1] = "123";
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if you have:
Object[][] data;
data = new Object[3] [3];you end yo getting ArrayIndexOutOfBoundException if you try to point to some other Indexes. You can increase the size by doing new:
Object[][] data;
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Pelle S
District Sales Manager
National Instruments Sweden
Attachments:
Dynamic queue.vi ‏245 KB

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sorry, not possible
http://stackoverflow.com/questions/5620324/mailto-with-html-body
https://www.google.com/search?rlz=1C1CHFX_enUS566US566&{google:acceptedSuggestion}oq=mailto+with+mime+type&sourceid=chro…

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null

the jvm has nothing to do with it ...
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