Non blocking jDialog & return values
Hi,
I have (at the center of this problem) 3 classes. A controller class, and two jDialog windows.
The controller initiates the first jDialog window (a main menu window). When the use clicks on a button the second jDialog window opens (a search window).
How do I start the jDialog windows without the controller blocking on the show() calls?
solved the non-blocking problem now have another lol!
the method in the controller now does not block and the search dialog is displayed fine.
It displays a list of results and the use double clicks on a result to display the details. I am using a jTable to display the results. The table has a mouse click listener that detects the double click. How do i notify the my controller class that the use has selected a result?
If this is an easy problem, accept my apologies, I am relatively new to java...
Similar Messages
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Not getting the return value of a program though it has no errors
public static String giroReturnFileDate(String strType)throws IOException{
try{
SimpleDateFormat getFormatDate = new SimpleDateFormat("yyMM");
Date date = new Date();
String str = getFormatDate.format(date);
System.out.println("Current Date is : "+ str);
System.out.println("Fetching the Giro file now");
if(strType.equalsIgnoreCase("WPD") || strType.equalsIgnoreCase("ISTD")) {
FileReader inputFileReader = new FileReader("giro2itcs_"+strType+".txt");
ArrayList list = new ArrayList();
ArrayList list1 = new ArrayList();
System.out.println("Reading the file");
BufferedReader inputStream = new BufferedReader(inputFileReader);
String inLine = null;
String str1 = null;
while((inLine = inputStream.readLine()) != null && inLine.length() < 2)
list.add(inLine);
System.out.println("Control Record for giro2itcs_"+strType+"is:"+ inLine);
inputFileReader.close();
inputStream.close();
for (int i=0; i<inLine.length(); i++ )
str1 = inLine.substring(19,23);
System.out.println("date of the transaction is:"+str1);
if (str .equals(str1)){
System.out.println("giro2itcs_"+strType+".txt file is created today");
return "true";
else{
System.out.println("giro2itcs_"+strType+".txt file is not created today");
return "false";
}// end of if
return "test";
}// end of try
catch(Exception e) {
System.out.println("The Exception is ::::::::::::::"+e);
return "one";
}//end of giroReturnFileDate(...) method
}//end of of the class
main method is seperate. this program compiles fine but am not getting the return value for this. none of the return values. plzzz help me.can you send me the code complete one ...
i will debug and solve the problem
[email protected]
By publishing your email address you are likely to get loads of spam. -
Chaining WritableByteChannels and non-blocking I/O?
Hello all,
Suppose I want to implement a data transformation algorithm that works in chunks of say 4 bytes.
The algorithm would hook into existing I/O paradigms for writing and reading data.
Ignoring the transformation algorithm for now (it is actually irrelevant for my question), let's just I need to buffer data in 4-byte chunks.
Since I want to make as little assumptions as possible about the decorated channel, BufferingWritableByteChannel needs to work channels in blocking and in non-blocking mode.
When the decorated channel is in non-blocking mode, BuffereingWritableByteChannel may behave as in non-blocking mode itself, which is fine by me.
However the problem is with the residual bytes: they do not get written until the close() method is called.
I have implemented the close() method to be blocking (the while loop with the ugly yield() calls), so even when the decorated channel is in non-blocking mode everything will get written properly.
However, writing potentially blocking calls (busy loops) in close() methods seems like a bad idea...
So the question is:
Is there a better way of doing this?
Can I avoid having to write busy loops?
package nio;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.WritableByteChannel;
import static nio.ChannelUtils.*;
public class BufferingWritableByteChannel implements WritableByteChannel {
private final WritableByteChannel decoratedChannel;
private final ByteBuffer buffer = ByteBuffer.allocate(4);
private boolean buffering = true;
public BufferingWritableByteChannel(WritableByteChannel decoratedChannel) {
this.decoratedChannel = decoratedChannel;
public synchronized void close() throws IOException {
if (buffering) {
buffer.flip();
writeBlockingly(decoratedChannel, buffer);
buffer.clear();
decoratedChannel.close();
public synchronized boolean isOpen() {
return decoratedChannel.isOpen();
public synchronized int write(ByteBuffer input) throws IOException {
int bytesWritten = 0;
if (!buffering) {
decoratedChannel.write(buffer);
if (buffer.hasRemaining()) { // May happen when decorated channel in non-blocking mode
return bytesWritten;
buffer.clear();
buffering = true;
while (input.hasRemaining()) {
bytesWritten += putAsMuchAsPossible(input, buffer);
if (!buffer.hasRemaining()) {
buffer.flip();
decoratedChannel.write(buffer);
if (buffer.hasRemaining()) { // May happen when decorated channel in non-blocking mode
buffering = false;
return bytesWritten;
buffer.clear();
return bytesWritten;
package nio;
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.nio.channels.WritableByteChannel;
public class ChannelUtils {
private ChannelUtils() {
* Blockingly writes data to a channel, even if the channel is in non-blocking mode.
public static final int writeBlockingly(WritableByteChannel channel, ByteBuffer buffer) throws IOException {
int bytesWritten = 0;
boolean yield = false;
while (buffer.hasRemaining()) {
bytesWritten += channel.write(buffer);
if (yield)
Thread.yield();
else
yield = true;
return bytesWritten;
* Puts as much bytes as possible from an input buffer into an output buffer, avoiding {@link BufferOverflowException}.
public static final int putAsMuchAsPossible(ByteBuffer input, ByteBuffer output) {
int bytesWritten = Math.min(input.remaining(), output.remaining());
ByteBuffer inputSlice = input.slice();
inputSlice.limit(inputSlice.position() + bytesWritten);
output.put(inputSlice);
input.position(input.position() + bytesWritten);
return bytesWritten;
}Hello all,
Suppose I want to implement a data transformation algorithm that works in chunks of say 4 bytes.
The algorithm would hook into existing I/O paradigms for writing and reading data.
Ignoring the transformation algorithm for now (it is actually irrelevant for my question), let's just I need to buffer data in 4-byte chunks.
Since I want to make as little assumptions as possible about the decorated channel, BufferingWritableByteChannel needs to work channels in blocking and in non-blocking mode.
When the decorated channel is in non-blocking mode, BuffereingWritableByteChannel may behave as in non-blocking mode itself, which is fine by me.
However the problem is with the residual bytes: they do not get written until the close() method is called.
I have implemented the close() method to be blocking (the while loop with the ugly yield() calls), so even when the decorated channel is in non-blocking mode everything will get written properly.
However, writing potentially blocking calls (busy loops) in close() methods seems like a bad idea...
So the question is:
Is there a better way of doing this?
Can I avoid having to write busy loops?
package nio;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.WritableByteChannel;
import static nio.ChannelUtils.*;
public class BufferingWritableByteChannel implements WritableByteChannel {
private final WritableByteChannel decoratedChannel;
private final ByteBuffer buffer = ByteBuffer.allocate(4);
private boolean buffering = true;
public BufferingWritableByteChannel(WritableByteChannel decoratedChannel) {
this.decoratedChannel = decoratedChannel;
public synchronized void close() throws IOException {
if (buffering) {
buffer.flip();
writeBlockingly(decoratedChannel, buffer);
buffer.clear();
decoratedChannel.close();
public synchronized boolean isOpen() {
return decoratedChannel.isOpen();
public synchronized int write(ByteBuffer input) throws IOException {
int bytesWritten = 0;
if (!buffering) {
decoratedChannel.write(buffer);
if (buffer.hasRemaining()) { // May happen when decorated channel in non-blocking mode
return bytesWritten;
buffer.clear();
buffering = true;
while (input.hasRemaining()) {
bytesWritten += putAsMuchAsPossible(input, buffer);
if (!buffer.hasRemaining()) {
buffer.flip();
decoratedChannel.write(buffer);
if (buffer.hasRemaining()) { // May happen when decorated channel in non-blocking mode
buffering = false;
return bytesWritten;
buffer.clear();
return bytesWritten;
package nio;
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.nio.channels.WritableByteChannel;
public class ChannelUtils {
private ChannelUtils() {
* Blockingly writes data to a channel, even if the channel is in non-blocking mode.
public static final int writeBlockingly(WritableByteChannel channel, ByteBuffer buffer) throws IOException {
int bytesWritten = 0;
boolean yield = false;
while (buffer.hasRemaining()) {
bytesWritten += channel.write(buffer);
if (yield)
Thread.yield();
else
yield = true;
return bytesWritten;
* Puts as much bytes as possible from an input buffer into an output buffer, avoiding {@link BufferOverflowException}.
public static final int putAsMuchAsPossible(ByteBuffer input, ByteBuffer output) {
int bytesWritten = Math.min(input.remaining(), output.remaining());
ByteBuffer inputSlice = input.slice();
inputSlice.limit(inputSlice.position() + bytesWritten);
output.put(inputSlice);
input.position(input.position() + bytesWritten);
return bytesWritten;
} -
Application Builder: Can you create non-blocking, return-immediately functions in a dll?
I need to include a procedure in a dll that is non-blocking, i.e. it should return immediately after the procedure has been called, and not return after its processes are completed.
The procedure is a LabView 7.0 VI, and the dll is being created using the Application Builder. Currently the procedure completes its desired task and then returns, but I would like the function to return immediately. Thanks for your help!Rischaard,
I don't know if that will work in a dll, however as an idea:
use the vi-server functions:
Your dll-procedure opens a OwnTreat.vi(wich will do the work) with vi-server, and run it without waiting for completion.
First thing OwnTreat.vi should do is opening (with vi-server) a reference to itself (So your caller dll can close without stopping the OwnTreat.vi)
Then OwnTreat.vi con do what YOU want. When finished close the self-reference
Maybe you need a short wait or a feedback to make sure that OwnTreat has opened his own reverence before your dll stops.
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ' -
Return Values to Block from Insert Procedure
I have a block with an insert operation performed by a procedure. The insert is working fine.
However, I was assuming that within the procedure I could modify a value in the record (prior to the insert) and then that new value would be returned to the item in the form so the user can see it. (The procedure allocates a unique reference number from a sequence and I would like to display it back on the screen in the reference number field.)
Can anyone help or suggest an alternative?
Thanks
Lisa Davies
Durban, South AfricaI have a block with an insert operation performed by
a procedure. The insert is working fine.
However, I was assuming that within the procedure I
could modify a value in the record (prior to the
insert) and then that new value would be returned to
the item in the form so the user can see it. (The
procedure allocates a unique reference number from a
sequence and I would like to display it back on the
screen in the reference number field.)It is really disappointing to me that Oracle cannot handle this simple need by specifying DML Return Value using built-in inserting/updating.
I had to write a post-insert trigger in the forms to update the field in the data_block with the value generated by the DB-side pre-insert trigger. -
SELECT of OCILobLocator in Non Blocking mode
Hi all.
I have problem:
I try select BLOB field into OCILobLocator* buffer in Non Blocking mode, and receive 'ORA-03106: fatal two-task communication protocol error' sometimes.
Details:
Application contains two threads : 1. select blob field, 2. update it.
I tried separate update and select to different apps (and run its in one time) - problem reproduced.
problem reproduced for OCIStmtFetch and OCIStmtFetch2.
If disable non blocking mode - problem disappear.
if error appear - record level error code contains 1405. Need wait few minutes for error message appearing (~1 minute in my case).
Using of OCI_DEFAULT in OCIDefineByPos instead OCI_DYNAMIC_FETCH don't solve problem.
I use oracle server and client library with version 10.2.0.4
Output sample:
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #877: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #54: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #877: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #54: 1405
Can anybody help me ?
m.b. exists workaround ?
#include <iostream>
#include <sstream>
#include <assert.h>
#include <oci.h>
#define _DYN 1
before run this test run next sql at DB:
CREATE TABLE ADSERVERTEST_BLOB(id NUMBER(10), text BLOB);
BEGIN
FOR i IN 0..999 LOOP
INSERT INTO ADSERVERTEST_BLOB(id, text) VALUES(i, utl_raw.cast_to_raw('init'));
END LOOP;
END;
template<typename Type, unsigned long TypeId>
class OCIHandlePtr
public:
OCIHandlePtr(): handle_(0) {}
OCIHandlePtr(Type* handle): handle_(handle) {}
~OCIHandlePtr()
reset(0);
void reset(Type* handle)
if(handle_)
sword result;
if((result = OCIHandleFree(
handle_,
TypeId)) != OCI_SUCCESS)
assert(0);
std::cerr << "Can't make OCIHandleFree" << std::endl;
handle_ = handle;
Type* get()
return handle_;
Type*& fill()
reset(0);
return handle_;
private:
Type* handle_;
template<typename Type, unsigned long TypeId>
class OCIDescriptorPtr
public:
OCIDescriptorPtr(): handle_(0) {}
OCIDescriptorPtr(Type* handle): handle_(handle) {}
~OCIDescriptorPtr()
reset(0);
void reset(Type* handle)
if(handle_)
sword result;
if((result = OCIDescriptorFree(
handle_,
TypeId)) != OCI_SUCCESS)
std::cerr << "Can't make OCIDescriptorFree" << std::endl;
handle_ = handle;
Type* get()
return handle_;
Type*& fill()
reset(0);
return handle_;
private:
Type* handle_;
void throw_oci_error(
const char* fun,
const char* oci_op,
long status,
OCIError* oci_error_handler,
const char* query = 0)
std::cerr << fun << ": can't make " << oci_op << ": status = " << status;
if(status == OCI_SUCCESS_WITH_INFO ||
status == OCI_ERROR)
std::cerr << ", message = '";
text err_buf[1024] = "";
sb4 err_code = 0;
OCIErrorGet(
oci_error_handler,
(ub4)1,
0,
&err_code,
err_buf,
sizeof(err_buf),
(ub4)OCI_HTYPE_ERROR);
std::cerr << err_buf << "', error code = " << err_code;
exit(1);
if(query)
std::cerr << ", sql = " << query;
OCIHandlePtr<OCIEnv, OCI_HTYPE_ENV> environment_handle;
void connect(
OCIEnv* environment_handle,
const char* db,
const char* user,
const char* password,
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR>& error_handle,
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER>& server_handle,
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION>& session_handle,
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX>& svc_context_handle)
static const char* FUN = "connect()";
sword result;
// allocate an error handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &error_handle.fill(),
OCI_HTYPE_ERROR,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// allocate a server handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &server_handle.fill(),
OCI_HTYPE_SERVER,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
if((result = OCIServerAttach(
server_handle.get(),
error_handle.get(),
(text*)db,
strlen(db),
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIServerAttach", result, error_handle.get());
// allocate a service handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &svc_context_handle.fill(),
OCI_HTYPE_SVCCTX,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// set the server attribute in the service context handle
if((result = OCIAttrSet(
svc_context_handle.get(),
OCI_HTYPE_SVCCTX,
server_handle.get(),
sizeof(OCIServer*),
OCI_ATTR_SERVER,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// allocate a user session handle
if((result = OCIHandleAlloc(
environment_handle,
(void **)&session_handle.fill(),
OCI_HTYPE_SESSION,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// set username and password attributes in user session handle
if((result = OCIAttrSet(
session_handle.get(),
OCI_HTYPE_SESSION,
(text*)user,
strlen(user),
OCI_ATTR_USERNAME,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
if((result = OCIAttrSet(
session_handle.get(),
OCI_HTYPE_SESSION,
(text*)password,
strlen(password),
OCI_ATTR_PASSWORD,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
// start the session
if((result = OCISessionBegin(
svc_context_handle.get(),
error_handle.get(),
session_handle.get(),
OCI_CRED_RDBMS,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCISessionBegin", result, error_handle.get());
// set the user session attribute in the service context handle
if((result = OCIAttrSet(
svc_context_handle.get(),
OCI_HTYPE_SVCCTX,
session_handle.get(),
sizeof(OCISession*),
OCI_ATTR_SESSION,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
ub1 attr_value = 1;
if((result = OCIAttrSet(
server_handle.get(),
OCI_HTYPE_SERVER,
&attr_value,
sizeof(attr_value),
OCI_ATTR_NONBLOCKING_MODE,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
void disconnect(
OCIEnv* environment_handle,
OCIError* error_handle,
OCIServer* server_handle,
OCISession* session_handle,
OCISvcCtx* svc_context_handle)
static const char* FUN = "disconnect()";
sword result;
if((result = OCISessionEnd(
svc_context_handle,
error_handle,
session_handle,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCISessionEnd", result, error_handle);
if((result = OCIServerDetach(
server_handle,
error_handle,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIServerDetach", result, error_handle);
OCILobLocator* FETCH_BUFFER_1[10000*1024];
char IND_BUFFER_1[10000*1024];
ub2 ERROR_BUFFER_1[1024];
OCIDefine* define_handle_1;
void clear_blob_buf(
OCILobLocator** buf,
unsigned long fetch_size)
for(unsigned long i = 0; i < 1024; ++i)
OCIDescriptorFree(
buf,
(ub4)OCI_DTYPE_LOB);
::memset(buf, 0, fetch_size * 1024);
uint32_t RET_LEN4;
sb4 oci_blob_callback(
dvoid* ctx,
OCIDefine* define,
ub4 iter,
dvoid** bufpp,
ub4** alenpp,
ub1* piecep,
dvoid** indpp,
ub2** rcodepp)
RET_LEN4 = sizeof(OCILobLocator*);
*bufpp = FETCH_BUFFER_1[iter];
*alenpp = &RET_LEN4;
*piecep = OCI_ONE_PIECE;
*indpp = IND_BUFFER_1 + iter;
*rcodepp = ERROR_BUFFER_1 + iter;
//std::cout << "iter: " << iter << std::endl;
return OCI_CONTINUE;
int define_column(
OCIEnv* environment_handle,
OCISvcCtx* svc_handle,
OCIStmt* stmt_handle,
OCIError* error_handle,
OCIDefine** define_handle,
unsigned long pos,
long oci_type,
unsigned long fetch_size,
OCILobLocator** buf,
char* ind_buf,
ub2* err_buf)
static const char* FUN = "define_column()";
sword result;
if(oci_type == SQLT_BLOB)
::memset(buf, 0, fetch_size * 1024);
for(int i = 0; i < 1024; ++i)
if((result = OCIDescriptorAlloc(
(dvoid*)environment_handle,
(dvoid**)&buf[i],
(ub4)OCI_DTYPE_LOB,
(size_t)0,
(dvoid**)0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDescriptorAlloc", result, error_handle);
ub2 size = 0;
OCIDescriptorPtr<OCIParam, OCI_DTYPE_PARAM> param_handle;
// ub2 oci_data_type = 0;
if((result = OCIParamGet(
stmt_handle,
OCI_HTYPE_STMT,
error_handle,
reinterpret_cast<void**>(¶m_handle.fill()),
pos)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIParamGet", result, error_handle);
if((result = OCIAttrGet(
param_handle.get(),
OCI_DTYPE_PARAM,
&size,
0,
OCI_ATTR_DATA_SIZE,
error_handle)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle);
if((result = OCIDefineByPos(
stmt_handle,
define_handle,
error_handle,
pos,
# ifdef _DYN
0,
-1,
#else
buf,
fetch_size,
#endif
oci_type,
ind_buf,
0,
err_buf, // ptr to array of column-level return codes
# ifdef _DYN
OCI_DYNAMIC_FETCH
# else
OCI_DEFAULT
# endif
)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDefineByPos", result, error_handle);
# ifdef _DYN
if((result = OCIDefineDynamic(
*define_handle,
error_handle,
0,
oci_blob_callback)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDefineByPos", result, error_handle);
# endif
return 0;
int define_columns(
OCIEnv* environment_handle,
OCISvcCtx* svc_handle,
OCIStmt* stmt_handle,
OCIError* error_handle)
static const char* FUN = "define_columns()";
define_handle_1 = 0;
int pos = 1;
::memset(ERROR_BUFFER_1, 0, 1024 * sizeof(ERROR_BUFFER_1[0]));
define_column(
environment_handle,
svc_handle,
stmt_handle,
error_handle,
&define_handle_1,
pos++,
SQLT_BLOB,
sizeof(OCILobLocator*),
FETCH_BUFFER_1,
IND_BUFFER_1,
ERROR_BUFFER_1);
return 0;
int execute_select(
const char* db,
const char* user,
const char* password)
static const char* FUN = "execute_select()";
const unsigned long FETCH_COUNT = 1024;
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR> error_handle;
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER> server_handle;
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION> session_handle;
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX> svc_context_handle;
connect(
environment_handle.get(),
db,
user,
password,
error_handle,
server_handle,
session_handle,
svc_context_handle);
OCIHandlePtr<OCIStmt, OCI_HTYPE_STMT> stmt_handle;
sword result;
if((result = OCIHandleAlloc(
environment_handle.get(),
(void**)&stmt_handle.fill(),
OCI_HTYPE_STMT,
0,
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
const char QUERY[] = "SELECT text FROM ADSERVERTEST_BLOB";
ub4 rows = 0;
if((result = OCIAttrSet(
stmt_handle.get(),
OCI_HTYPE_STMT,
(dvoid *)&rows,
(ub4)sizeof(ub4),
OCI_ATTR_PREFETCH_ROWS,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(
FUN, "OCIAttrSet(OCI_ATTR_PREFETCH_ROWS)", result, error_handle.get());
if((result = OCIStmtPrepare(
stmt_handle.get(),
error_handle.get(),
(text*)QUERY,
strlen(QUERY),
OCI_NTV_SYNTAX,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIStmtPrepare", result, error_handle.get());
ub2 stmt_type;
if((result = OCIAttrGet(
stmt_handle.get(),
OCI_HTYPE_STMT,
&stmt_type,
0,
OCI_ATTR_STMT_TYPE,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle.get());
ub4 prev_fetched = 0;
while((result = OCIStmtExecute(
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get(),
0,
0,
0,
0,
OCI_DEFAULT)) != OCI_SUCCESS)
if(result != OCI_STILL_EXECUTING)
throw_oci_error(FUN, "OCIStmtExecute", result, error_handle.get());
define_columns(
environment_handle.get(),
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get());
ub4 all_fetched_count = 0;
while(true)
while((result = OCIStmtFetch2(
stmt_handle.get(),
error_handle.get(),
FETCH_COUNT,
OCI_FETCH_NEXT,
1,
OCI_DEFAULT)) == OCI_STILL_EXECUTING
# ifdef _DYN
// || result == OCI_NEED_DATA
# endif
if (result != OCI_SUCCESS &&
result != OCI_NO_DATA &&
result != OCI_SUCCESS_WITH_INFO)
std::cerr << FUN << ": can't make OCIStmtFetch2: status = " << result;
std::cerr << ", message = '";
text err_buf[1024] = "";
sb4 err_code = 0;
OCIErrorGet(
error_handle.get(),
(ub4)1,
0,
&err_code,
err_buf,
sizeof(err_buf),
(ub4)OCI_HTYPE_ERROR);
std::cerr << err_buf << "', error code = " << err_code << ", row errors: ";
for(const ub2* cur = ERROR_BUFFER_1;
cur < ERROR_BUFFER_1 + 1024; ++cur)
if(*cur)
std::cerr << "#" << (cur - ERROR_BUFFER_1) << ": " <<
*cur << std::endl;
ub4 fetched_count = 0;
if((result = OCIAttrGet (
stmt_handle.get(),
OCI_HTYPE_STMT,
&fetched_count,
0,
OCI_ATTR_ROW_COUNT,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle.get());
all_fetched_count += fetched_count;
if(fetched_count > 0)
for(unsigned long i = 0; i < fetched_count - 1; ++i)
ub4 lob_size;
while((result = OCILobGetLength(
svc_context_handle.get(),
error_handle.get(),
FETCH_BUFFER_1[i],
&lob_size)) == OCI_STILL_EXECUTING)
if(result != OCI_SUCCESS)
throw_oci_error(FUN, "OCILobGetLength", result, error_handle.get());
std::cout << "#" << i << ": ind = " << (unsigned long)IND_BUFFER_1[i] <<
", len = " << lob_size << std::endl;
if(fetched_count - prev_fetched < FETCH_COUNT)
break;
prev_fetched = fetched_count;
clear_blob_buf(
FETCH_BUFFER_1,
sizeof(OCILobLocator*));
while((result = OCIStmtFetch(
stmt_handle.get(),
error_handle.get(),
0,
OCI_FETCH_NEXT,
OCI_DEFAULT)) == OCI_STILL_EXECUTING
disconnect(
environment_handle.get(),
error_handle.get(),
server_handle.get(),
session_handle.get(),
svc_context_handle.get());
return 0;
int execute_update(
const char* db,
const char* user,
const char* password)
static const char* FUN = "execute_update()";
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR> error_handle;
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER> server_handle;
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION> session_handle;
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX> svc_context_handle;
connect(
environment_handle.get(),
db,
user,
password,
error_handle,
server_handle,
session_handle,
svc_context_handle);
OCIHandlePtr<OCIStmt, OCI_HTYPE_STMT> stmt_handle;
for(int i = 0; i < 1000; ++i)
sword result;
if((result = OCIHandleAlloc(
environment_handle.get(),
(void**)&stmt_handle.fill(),
OCI_HTYPE_STMT,
0,
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
std::ostringstream sql;
std::string str;
std::string et("\xEB\xB2\x88");
unsigned long rep = ::rand() % 500 + 1;
str.reserve(rep*et.size());
for(unsigned long ei = 0; ei < rep; ++ei)
str.append(et);
sql << "BEGIN " <<
"UPDATE ADSERVERTEST_BLOB SET text = "
"utl_raw.cast_to_raw('" << str << "') "
"WHERE id = " << i <<
"END;";
if((result = OCIStmtPrepare(
stmt_handle.get(),
error_handle.get(),
(text*)sql.str().c_str(),
sql.str().length(),
OCI_NTV_SYNTAX,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIStmtPrepare", result, error_handle.get());
while((result = OCIStmtExecute(
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get(),
1,
0,
0,
0,
OCI_DEFAULT)) != OCI_SUCCESS)
if(result != OCI_STILL_EXECUTING)
throw_oci_error(FUN, "OCIStmtExecute", result, error_handle.get());
disconnect(
environment_handle.get(),
error_handle.get(),
server_handle.get(),
session_handle.get(),
svc_context_handle.get());
return 0;
void* select_thread(void* ctx)
while(true)
execute_select(
"//oraclept.ocslab.com/addbpt.ocslab.com",
"bs_unittest_4",
"adserver");
// std::cout << "select finished" << std::endl;
return ctx;
void* update_thread(void* ctx)
while(true)
execute_update(
"//oraclept.ocslab.com/addbpt.ocslab.com",
"bs_unittest_4",
"adserver");
// std::cout << "update finished" << std::endl;
return ctx;
int main()
static const char* FUN = "main()";
sword result;
// allocate an environment handle
if((result = OCIEnvCreate(
&environment_handle.fill(),
OCI_OBJECT | OCI_THREADED,
0, // context
0, // malloc
0, // realloc
0, // free
0, // extra memory to allocate
0) // pointer to user-memory
) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIEnvCreate", result, 0);
pthread_t th1, th2;
pthread_create(&th1, 0, select_thread, 0);
pthread_create(&th2, 0, update_thread, 0);
pthread_join(th1, 0);
pthread_join(th2, 0);
return 0;
Edited by: user13011391 on 20.04.2010 5:50
Edited by: user13011391 on 20.04.2010 6:00
Edited by: user13011391 on 20.04.2010 6:15Hi all.
I have problem:
I try select BLOB field into OCILobLocator* buffer in Non Blocking mode, and receive 'ORA-03106: fatal two-task communication protocol error' sometimes.
Details:
Application contains two threads : 1. select blob field, 2. update it.
I tried separate update and select to different apps (and run its in one time) - problem reproduced.
problem reproduced for OCIStmtFetch and OCIStmtFetch2.
If disable non blocking mode - problem disappear.
if error appear - record level error code contains 1405. Need wait few minutes for error message appearing (~1 minute in my case).
Using of OCI_DEFAULT in OCIDefineByPos instead OCI_DYNAMIC_FETCH don't solve problem.
I use oracle server and client library with version 10.2.0.4
Output sample:
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #877: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #54: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #877: 1405
execute_select(): can't make OCIStmtFetch2: status = -1, message = 'ORA-03106: fatal two-task communication protocol error
', error code = 3106, row errors: #54: 1405
Can anybody help me ?
m.b. exists workaround ?
#include <iostream>
#include <sstream>
#include <assert.h>
#include <oci.h>
#define _DYN 1
before run this test run next sql at DB:
CREATE TABLE ADSERVERTEST_BLOB(id NUMBER(10), text BLOB);
BEGIN
FOR i IN 0..999 LOOP
INSERT INTO ADSERVERTEST_BLOB(id, text) VALUES(i, utl_raw.cast_to_raw('init'));
END LOOP;
END;
template<typename Type, unsigned long TypeId>
class OCIHandlePtr
public:
OCIHandlePtr(): handle_(0) {}
OCIHandlePtr(Type* handle): handle_(handle) {}
~OCIHandlePtr()
reset(0);
void reset(Type* handle)
if(handle_)
sword result;
if((result = OCIHandleFree(
handle_,
TypeId)) != OCI_SUCCESS)
assert(0);
std::cerr << "Can't make OCIHandleFree" << std::endl;
handle_ = handle;
Type* get()
return handle_;
Type*& fill()
reset(0);
return handle_;
private:
Type* handle_;
template<typename Type, unsigned long TypeId>
class OCIDescriptorPtr
public:
OCIDescriptorPtr(): handle_(0) {}
OCIDescriptorPtr(Type* handle): handle_(handle) {}
~OCIDescriptorPtr()
reset(0);
void reset(Type* handle)
if(handle_)
sword result;
if((result = OCIDescriptorFree(
handle_,
TypeId)) != OCI_SUCCESS)
std::cerr << "Can't make OCIDescriptorFree" << std::endl;
handle_ = handle;
Type* get()
return handle_;
Type*& fill()
reset(0);
return handle_;
private:
Type* handle_;
void throw_oci_error(
const char* fun,
const char* oci_op,
long status,
OCIError* oci_error_handler,
const char* query = 0)
std::cerr << fun << ": can't make " << oci_op << ": status = " << status;
if(status == OCI_SUCCESS_WITH_INFO ||
status == OCI_ERROR)
std::cerr << ", message = '";
text err_buf[1024] = "";
sb4 err_code = 0;
OCIErrorGet(
oci_error_handler,
(ub4)1,
0,
&err_code,
err_buf,
sizeof(err_buf),
(ub4)OCI_HTYPE_ERROR);
std::cerr << err_buf << "', error code = " << err_code;
exit(1);
if(query)
std::cerr << ", sql = " << query;
OCIHandlePtr<OCIEnv, OCI_HTYPE_ENV> environment_handle;
void connect(
OCIEnv* environment_handle,
const char* db,
const char* user,
const char* password,
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR>& error_handle,
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER>& server_handle,
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION>& session_handle,
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX>& svc_context_handle)
static const char* FUN = "connect()";
sword result;
// allocate an error handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &error_handle.fill(),
OCI_HTYPE_ERROR,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// allocate a server handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &server_handle.fill(),
OCI_HTYPE_SERVER,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
if((result = OCIServerAttach(
server_handle.get(),
error_handle.get(),
(text*)db,
strlen(db),
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIServerAttach", result, error_handle.get());
// allocate a service handle
if((result = OCIHandleAlloc(
environment_handle,
(void **) &svc_context_handle.fill(),
OCI_HTYPE_SVCCTX,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// set the server attribute in the service context handle
if((result = OCIAttrSet(
svc_context_handle.get(),
OCI_HTYPE_SVCCTX,
server_handle.get(),
sizeof(OCIServer*),
OCI_ATTR_SERVER,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// allocate a user session handle
if((result = OCIHandleAlloc(
environment_handle,
(void **)&session_handle.fill(),
OCI_HTYPE_SESSION,
0, // extra memory to allocate
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
// set username and password attributes in user session handle
if((result = OCIAttrSet(
session_handle.get(),
OCI_HTYPE_SESSION,
(text*)user,
strlen(user),
OCI_ATTR_USERNAME,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
if((result = OCIAttrSet(
session_handle.get(),
OCI_HTYPE_SESSION,
(text*)password,
strlen(password),
OCI_ATTR_PASSWORD,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
// start the session
if((result = OCISessionBegin(
svc_context_handle.get(),
error_handle.get(),
session_handle.get(),
OCI_CRED_RDBMS,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCISessionBegin", result, error_handle.get());
// set the user session attribute in the service context handle
if((result = OCIAttrSet(
svc_context_handle.get(),
OCI_HTYPE_SVCCTX,
session_handle.get(),
sizeof(OCISession*),
OCI_ATTR_SESSION,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
ub1 attr_value = 1;
if((result = OCIAttrSet(
server_handle.get(),
OCI_HTYPE_SERVER,
&attr_value,
sizeof(attr_value),
OCI_ATTR_NONBLOCKING_MODE,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrSet", result, error_handle.get());
void disconnect(
OCIEnv* environment_handle,
OCIError* error_handle,
OCIServer* server_handle,
OCISession* session_handle,
OCISvcCtx* svc_context_handle)
static const char* FUN = "disconnect()";
sword result;
if((result = OCISessionEnd(
svc_context_handle,
error_handle,
session_handle,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCISessionEnd", result, error_handle);
if((result = OCIServerDetach(
server_handle,
error_handle,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIServerDetach", result, error_handle);
OCILobLocator* FETCH_BUFFER_1[10000*1024];
char IND_BUFFER_1[10000*1024];
ub2 ERROR_BUFFER_1[1024];
OCIDefine* define_handle_1;
void clear_blob_buf(
OCILobLocator** buf,
unsigned long fetch_size)
for(unsigned long i = 0; i < 1024; ++i)
OCIDescriptorFree(
buf,
(ub4)OCI_DTYPE_LOB);
::memset(buf, 0, fetch_size * 1024);
uint32_t RET_LEN4;
sb4 oci_blob_callback(
dvoid* ctx,
OCIDefine* define,
ub4 iter,
dvoid** bufpp,
ub4** alenpp,
ub1* piecep,
dvoid** indpp,
ub2** rcodepp)
RET_LEN4 = sizeof(OCILobLocator*);
*bufpp = FETCH_BUFFER_1[iter];
*alenpp = &RET_LEN4;
*piecep = OCI_ONE_PIECE;
*indpp = IND_BUFFER_1 + iter;
*rcodepp = ERROR_BUFFER_1 + iter;
//std::cout << "iter: " << iter << std::endl;
return OCI_CONTINUE;
int define_column(
OCIEnv* environment_handle,
OCISvcCtx* svc_handle,
OCIStmt* stmt_handle,
OCIError* error_handle,
OCIDefine** define_handle,
unsigned long pos,
long oci_type,
unsigned long fetch_size,
OCILobLocator** buf,
char* ind_buf,
ub2* err_buf)
static const char* FUN = "define_column()";
sword result;
if(oci_type == SQLT_BLOB)
::memset(buf, 0, fetch_size * 1024);
for(int i = 0; i < 1024; ++i)
if((result = OCIDescriptorAlloc(
(dvoid*)environment_handle,
(dvoid**)&buf[i],
(ub4)OCI_DTYPE_LOB,
(size_t)0,
(dvoid**)0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDescriptorAlloc", result, error_handle);
ub2 size = 0;
OCIDescriptorPtr<OCIParam, OCI_DTYPE_PARAM> param_handle;
// ub2 oci_data_type = 0;
if((result = OCIParamGet(
stmt_handle,
OCI_HTYPE_STMT,
error_handle,
reinterpret_cast<void**>(¶m_handle.fill()),
pos)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIParamGet", result, error_handle);
if((result = OCIAttrGet(
param_handle.get(),
OCI_DTYPE_PARAM,
&size,
0,
OCI_ATTR_DATA_SIZE,
error_handle)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle);
if((result = OCIDefineByPos(
stmt_handle,
define_handle,
error_handle,
pos,
# ifdef _DYN
0,
-1,
#else
buf,
fetch_size,
#endif
oci_type,
ind_buf,
0,
err_buf, // ptr to array of column-level return codes
# ifdef _DYN
OCI_DYNAMIC_FETCH
# else
OCI_DEFAULT
# endif
)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDefineByPos", result, error_handle);
# ifdef _DYN
if((result = OCIDefineDynamic(
*define_handle,
error_handle,
0,
oci_blob_callback)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIDefineByPos", result, error_handle);
# endif
return 0;
int define_columns(
OCIEnv* environment_handle,
OCISvcCtx* svc_handle,
OCIStmt* stmt_handle,
OCIError* error_handle)
static const char* FUN = "define_columns()";
define_handle_1 = 0;
int pos = 1;
::memset(ERROR_BUFFER_1, 0, 1024 * sizeof(ERROR_BUFFER_1[0]));
define_column(
environment_handle,
svc_handle,
stmt_handle,
error_handle,
&define_handle_1,
pos++,
SQLT_BLOB,
sizeof(OCILobLocator*),
FETCH_BUFFER_1,
IND_BUFFER_1,
ERROR_BUFFER_1);
return 0;
int execute_select(
const char* db,
const char* user,
const char* password)
static const char* FUN = "execute_select()";
const unsigned long FETCH_COUNT = 1024;
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR> error_handle;
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER> server_handle;
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION> session_handle;
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX> svc_context_handle;
connect(
environment_handle.get(),
db,
user,
password,
error_handle,
server_handle,
session_handle,
svc_context_handle);
OCIHandlePtr<OCIStmt, OCI_HTYPE_STMT> stmt_handle;
sword result;
if((result = OCIHandleAlloc(
environment_handle.get(),
(void**)&stmt_handle.fill(),
OCI_HTYPE_STMT,
0,
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
const char QUERY[] = "SELECT text FROM ADSERVERTEST_BLOB";
ub4 rows = 0;
if((result = OCIAttrSet(
stmt_handle.get(),
OCI_HTYPE_STMT,
(dvoid *)&rows,
(ub4)sizeof(ub4),
OCI_ATTR_PREFETCH_ROWS,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(
FUN, "OCIAttrSet(OCI_ATTR_PREFETCH_ROWS)", result, error_handle.get());
if((result = OCIStmtPrepare(
stmt_handle.get(),
error_handle.get(),
(text*)QUERY,
strlen(QUERY),
OCI_NTV_SYNTAX,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIStmtPrepare", result, error_handle.get());
ub2 stmt_type;
if((result = OCIAttrGet(
stmt_handle.get(),
OCI_HTYPE_STMT,
&stmt_type,
0,
OCI_ATTR_STMT_TYPE,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle.get());
ub4 prev_fetched = 0;
while((result = OCIStmtExecute(
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get(),
0,
0,
0,
0,
OCI_DEFAULT)) != OCI_SUCCESS)
if(result != OCI_STILL_EXECUTING)
throw_oci_error(FUN, "OCIStmtExecute", result, error_handle.get());
define_columns(
environment_handle.get(),
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get());
ub4 all_fetched_count = 0;
while(true)
while((result = OCIStmtFetch2(
stmt_handle.get(),
error_handle.get(),
FETCH_COUNT,
OCI_FETCH_NEXT,
1,
OCI_DEFAULT)) == OCI_STILL_EXECUTING
# ifdef _DYN
// || result == OCI_NEED_DATA
# endif
if (result != OCI_SUCCESS &&
result != OCI_NO_DATA &&
result != OCI_SUCCESS_WITH_INFO)
std::cerr << FUN << ": can't make OCIStmtFetch2: status = " << result;
std::cerr << ", message = '";
text err_buf[1024] = "";
sb4 err_code = 0;
OCIErrorGet(
error_handle.get(),
(ub4)1,
0,
&err_code,
err_buf,
sizeof(err_buf),
(ub4)OCI_HTYPE_ERROR);
std::cerr << err_buf << "', error code = " << err_code << ", row errors: ";
for(const ub2* cur = ERROR_BUFFER_1;
cur < ERROR_BUFFER_1 + 1024; ++cur)
if(*cur)
std::cerr << "#" << (cur - ERROR_BUFFER_1) << ": " <<
*cur << std::endl;
ub4 fetched_count = 0;
if((result = OCIAttrGet (
stmt_handle.get(),
OCI_HTYPE_STMT,
&fetched_count,
0,
OCI_ATTR_ROW_COUNT,
error_handle.get())) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIAttrGet", result, error_handle.get());
all_fetched_count += fetched_count;
if(fetched_count > 0)
for(unsigned long i = 0; i < fetched_count - 1; ++i)
ub4 lob_size;
while((result = OCILobGetLength(
svc_context_handle.get(),
error_handle.get(),
FETCH_BUFFER_1[i],
&lob_size)) == OCI_STILL_EXECUTING)
if(result != OCI_SUCCESS)
throw_oci_error(FUN, "OCILobGetLength", result, error_handle.get());
std::cout << "#" << i << ": ind = " << (unsigned long)IND_BUFFER_1[i] <<
", len = " << lob_size << std::endl;
if(fetched_count - prev_fetched < FETCH_COUNT)
break;
prev_fetched = fetched_count;
clear_blob_buf(
FETCH_BUFFER_1,
sizeof(OCILobLocator*));
while((result = OCIStmtFetch(
stmt_handle.get(),
error_handle.get(),
0,
OCI_FETCH_NEXT,
OCI_DEFAULT)) == OCI_STILL_EXECUTING
disconnect(
environment_handle.get(),
error_handle.get(),
server_handle.get(),
session_handle.get(),
svc_context_handle.get());
return 0;
int execute_update(
const char* db,
const char* user,
const char* password)
static const char* FUN = "execute_update()";
OCIHandlePtr<OCIError, OCI_HTYPE_ERROR> error_handle;
OCIHandlePtr<OCIServer, OCI_HTYPE_SERVER> server_handle;
OCIHandlePtr<OCISession, OCI_HTYPE_SESSION> session_handle;
OCIHandlePtr<OCISvcCtx, OCI_HTYPE_SVCCTX> svc_context_handle;
connect(
environment_handle.get(),
db,
user,
password,
error_handle,
server_handle,
session_handle,
svc_context_handle);
OCIHandlePtr<OCIStmt, OCI_HTYPE_STMT> stmt_handle;
for(int i = 0; i < 1000; ++i)
sword result;
if((result = OCIHandleAlloc(
environment_handle.get(),
(void**)&stmt_handle.fill(),
OCI_HTYPE_STMT,
0,
0)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIHandleAlloc", result, error_handle.get());
std::ostringstream sql;
std::string str;
std::string et("\xEB\xB2\x88");
unsigned long rep = ::rand() % 500 + 1;
str.reserve(rep*et.size());
for(unsigned long ei = 0; ei < rep; ++ei)
str.append(et);
sql << "BEGIN " <<
"UPDATE ADSERVERTEST_BLOB SET text = "
"utl_raw.cast_to_raw('" << str << "') "
"WHERE id = " << i <<
"END;";
if((result = OCIStmtPrepare(
stmt_handle.get(),
error_handle.get(),
(text*)sql.str().c_str(),
sql.str().length(),
OCI_NTV_SYNTAX,
OCI_DEFAULT)) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIStmtPrepare", result, error_handle.get());
while((result = OCIStmtExecute(
svc_context_handle.get(),
stmt_handle.get(),
error_handle.get(),
1,
0,
0,
0,
OCI_DEFAULT)) != OCI_SUCCESS)
if(result != OCI_STILL_EXECUTING)
throw_oci_error(FUN, "OCIStmtExecute", result, error_handle.get());
disconnect(
environment_handle.get(),
error_handle.get(),
server_handle.get(),
session_handle.get(),
svc_context_handle.get());
return 0;
void* select_thread(void* ctx)
while(true)
execute_select(
"//oraclept.ocslab.com/addbpt.ocslab.com",
"bs_unittest_4",
"adserver");
// std::cout << "select finished" << std::endl;
return ctx;
void* update_thread(void* ctx)
while(true)
execute_update(
"//oraclept.ocslab.com/addbpt.ocslab.com",
"bs_unittest_4",
"adserver");
// std::cout << "update finished" << std::endl;
return ctx;
int main()
static const char* FUN = "main()";
sword result;
// allocate an environment handle
if((result = OCIEnvCreate(
&environment_handle.fill(),
OCI_OBJECT | OCI_THREADED,
0, // context
0, // malloc
0, // realloc
0, // free
0, // extra memory to allocate
0) // pointer to user-memory
) != OCI_SUCCESS)
throw_oci_error(FUN, "OCIEnvCreate", result, 0);
pthread_t th1, th2;
pthread_create(&th1, 0, select_thread, 0);
pthread_create(&th2, 0, update_thread, 0);
pthread_join(th1, 0);
pthread_join(th2, 0);
return 0;
Edited by: user13011391 on 20.04.2010 5:50
Edited by: user13011391 on 20.04.2010 6:00
Edited by: user13011391 on 20.04.2010 6:15 -
Using non blocking connect() call for SCTP sockets in Solaris10
Hi,
I have a problem with non blocking connect call on SCTP socket.
I am using the sctp stack support in Solaris10.
When the connect is successful, I can get the pollout event on the socket.
But there is no event observed when the peer does not exist. In other words, I could not get the pollout event on connection failure. This logic works fine with TCP sockets on both Solaris and Suse10.
I am working with SCTP one-to-one style sockets.
Is there any way to handle this issue?
Do I need to load any patch to resolve this issue?
It will be great if I get a solution in this regard.
Thanks in advance.
Best Regards,
Bipin.There are at least two problems here.
A. In the receiver you should test for -1 from the read() immediately, rather than continue with the loop and try to write -1 bytes to the file.
B. In the sender you are ignoring the return value of client.write(), which can be anything from 0 to the buffer length. If you get 0 you should wait for another OP_WRITE to trigger; if you get a 'short write' you need to retry it until you've got nothing left to write from the current buffer, before you read any more data. This is where the data is vanishing. -
About NIO non-blocking socket write method behavior
Hi all -
I hope anyone could help in this issue.
Assume you create a NIO socket and configure its channel in non blocking mode:
channel.configureBlocking(false);
then you write a byte buffer into it:
int sentBytesNum = channel.write(byteBuffer);
What are the possibilities of sentBytesNum value? I am sure of two possibilities, which are:
- all data sent so sentBytesNum equals byteBuffer data size (limit minus position before sending) (after sending the limit and position of byteBuffer are the same)
- no data is sent so sentBytesNum is zero and byteBuffer limit and postion did not change, so we shall use a write selector to test when the channel will be ready for write to write the data.
What I am not sure about and need someone to confirm is the third possibility:
- only a part of data is sent (according to the available free space of socket output buffer) so sentBytesNum is more than zero but less than data size and byteBuffer position is advanced by the value of sentBytesNum, might this possibility happen??
If yes, so we should manage to hold the non sent part of byteBuffer till the channel becomes ready for write (we can know that using write selector) so we can write it to channel???
Thanks for help,
RockaYes, case three can occur. The usual NIO write loop looks like this:
int count = 0;
while (buf.position() > 0)
buf.flip();
count = ch.write(buf);
buf.compact();
if (count == 0)
break;
}This will run until buf.position() == 0 or count == 0. If the partial write case happens it will loop one more time and probably get a 0 count.
At the end of the loop, if buf.position() > 0 there is still unwritten data and at this point you should register for OP_WRITE and return to the selector. Otherwise if there is no data unwritten you should deregister OP_WRITE as you have nothing to write and aren't interested in the event any longer.
If you are reading something and writing at the same time the logic goes like this:
while (inch.read(buf) >= 0 || buf.position() > 0)
// etc
}This will read until EOF occurs and either buf.position() is zero or a zero length write occurred. -
Return values from a jpd to a jpf
I basically want to call a jpd from a page flow and then receive the results back from the jpd in my page flow. I have created a process control from the jpd and have included it in my page flow controller file using the following annotation.
* @common:control
private controls.leaveProcessPControl leaveControl ;
But since my jpd has a client response node for sending back the results (which corresponds to callback interface in the code), my page flow controller file is throwing an error saying that leaveControl implements a callback interface and page flow cannot receive asynchronous callbacks. Can anyone tell me how to resolve this.
I would also like to know if there are different approaches for returning values back to the jpf from a jpd.
Thanks,
RKWe are talking web interface here, so forget about Callbacks. I suggest that
you create Web Servicethat implements your proces or a control that calls
proces. Then Call that WS fro a controller, but in sync. way. Send a request
and then pull for response. This pull can be implemented as while loop in
Controler, with wait inside loop.
That wont work realy well if jour proces is long running, as controller will
block. In that case you will have to implement some kind of pulling in every
action method in your controller and react - fill data in internal variable
of controller for example.
I hope it helps, butt remember thin is not always the best.
"rohini k" <[email protected]> wrote in message
news:4042178.1101851602508.JavaMail.root@jserv5...
I basically want to call a jpd from a page flow and then receive the
results back from the jpd in my page flow. I have created a process control
from the jpd and have included in my page flow controller file using the
following annotation.
* @common:control
private controls.leaveProcessPControl leaveControl ;
But since my jpd has a client response node for sending back the results
(which corresponds to callback interface in the code), my page flow
controller file is throwing an error saying that leaveControl implements a
callback interface and page flow cannot receive asynchronous callbacks.
Can anyone tell me how to resolve this.
I would also like to know if there are different approaches for returning
values back to the jpf from a jpd.
Thanks,
RK -
How to get return value from java and read by other application?
i want to read return value from java and the other application read it.
for example:
public class test_return {
test_return(){
public int check(){
return 1;
public static void main(String args[]){
new test_return().check();
}from that class i make as jar file. How to read the return value (1) by other application?
thx..If your installer is requiring some process it invokes to return a particular value on failure, then the installer is seriously broken. There are a bazillion commands your installer could invoke, and any of them could fail, which in turn could invalidate the entire install process, and any of them could return any value on failure. The only value that's consistent (in my experience) is that zero means success and non-zero means failure, with specific non-zero values being different in different programs.
About the only control you have over the JVM's exit code is that if your main method completes without throwing an exception, the JVM will have an exit code of 0, and if main throws an exception (either explicitly or by not catching one thrown from below), it will be non-zero. I'm not even sure if that's guaranteed, but I would guess that's the case.
EDIT: I'm kind of full of crap here. If you're writing the Java code, you can call System.exit(whatever). But nonetheless, if your installer requires certain exit codes from any app--java or otherwise--you have a problem.
Edited by: jverd on Oct 29, 2009 1:27 AM -
How to get return value from Java runtime.getRuntime.exec?
I'm running shell commands from an Oracle db (11gr2) on aix.
But, I would like to get a return value from a shell comand... like you get with "echo $?"
I use a code like
CREATE OR REPLACE JAVA SOURCE NAMED common."Host" AS
import java.io.*;
public class Host {
public static int executeCommand(String command) {
int retval=0;
try {
String[] finalCommand;
finalCommand = new String[3];
finalCommand[0] = "/bin/sh";
finalCommand[1] = "-c";
finalCommand[2] = command;
final Process pr = Runtime.getRuntime().exec(finalCommand);
pr.waitFor();
catch (Exception ex) {
System.out.println(ex.getLocalizedMessage());
retval=-1;
return retval;
/but I do not get a return value... because I don't know how to get return value..
Edited by: user9158455 on 22-Sep-2010 07:33Hi,
Have your tried pr.exitValue() ?
I think you also need a finally block that destroys the subprocess
Regards
Peter -
How to trap null return values from getters when using Method.invoke()?
Hi,
I am using Method.invoke() to access getters in an Object. I need to know which getters return a value and which return null. However, irrespective of the actual return value, I am always getting non-null return value when using Method.invoke().
Unfortunately, the API documentation of Method.invoke() does not specify how it treats null return values.
Can someone help?
ThanksWhat do you get as a result?I think I know what the problem is.
I tested this using following and it worked fine:
public class TestMethodInvoke {
public String getName() {
return null;
public static void main(String args[]) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
Object o = new TestMethodInvoke();
Class cls = o.getClass();
Method m = cls.getMethod("getName", (Class[]) null);
Object result = m.invoke(o, (Object[])null);
if (result == null) {
System.err.println("OK: Return value was null as expected");
else {
System.err.println("FAILED: Return value was NOT null as expected");
However, when I use the same technique with an EJB 3.0 Entity class, the null return value is not returned. Instead, I get a String() object. Clearly, the problem is the the EJB 3.0 implementation (Glassfish/Toplink) which is manipulating the getters.
Regards
Dibyendu -
ORA-28500: connection from ORACLE to a non-Oracle system returned this message: ORA-02063: preceding line from OWB_75
Scenario:
I am having difficulty getting ODBC connection between Oracle OWB app with an 11gR2 DB (running on a VirtualBox Linux) and SQL Server 2008 running directly on the host. (Windows 8)
I am trying to take a SQL Server 2008 feed into Oracle Ware house Builder, and think(!) I have read everything and configured it in accordance (but I presume not given 3 days of failed attempts to fix it). I have also read several blogs, hence there might be a few more settings in the configuration files than the formal documentation says, but these have come from blogs that have “Solved” problems for other similar situations.
The environments:
HOST:
Name: RESOLVEIT-PC
IP: 192.168.1.80
Windows 8 (64bit) , with system DSN ODBC connection ACME_POS created with 32 bit ODBC set up (This setting still shows up fine in the 64 bit ODBC).
GUEST VM:
Name: OraDBSvr.com
GUES fixed IP Address: 192.1.200
Oracle VirtualBox (4.2.16)
Oracle Redhat Linux 6 (x86)
Oracle 11gR2 Enterprise Edition (11.2.0.1.0)
ODBC: Freetds driver
Configuration files:
initacmepos.ora
HS_FDS_CONNECT_INFO = 192.168.1.80/SQLEXPRESS/ACME_POS
HS_FDS_TRACE_LEVEL = 0
HS_FDS_SUPPORT_STATISTICS=FALSE
HS_RPC_FETCH_REBLOCKING= OFF
HS_FDS_FETCH_ROWS = 1
HS_FDS_SHAREABLE_NAME = /usr/local/lib/libtdsodbc.so
set ODBCINI=/opt/odbc/odbc.ini
# set <envvar>=<value>
odbc.ini
[ACME_POS]
Driver = FreeTDS
Description = ODBC Connection via FreeTDS
Trace = 1
Servername = 192.168.1.80
Database = dbo
odbcinst.ini
[PostgreSQL]
Description = ODBC for PostgreSQL
Driver = /usr/lib/psqlodbc.so
Setup = /usr/lib/libodbcpsqlS.so
Driver64 = /usr/lib64/psqlodbc.so
Setup64 = /usr/lib64/libodbcpsqlS.so
FileUsage = 1
[MySQL]
Description = ODBC for MySQL
Driver = /usr/lib/libmyodbc5.so
Setup = /usr/lib/libodbcmyS.so
Driver64 = /usr/lib64/libmyodbc5.so
Setup64 = /usr/lib64/libodbcmyS.so
FileUsage = 1
[FreeTDS]
Discription = TDS driver (Sybase / MS SQL)
Driver = /usr/local/lib/libtdsodbc.so
# Setup = /usr/local/lib/libtdsS.so
FileUsage = 1
CPTimeout =
CPReuse =
[oracle@oraDBsvr etc]$
freetds.conf
# $Id: freetds.conf,v 1.12 2007-12-25 06:02:36 jklowden Exp $
# This file is installed by FreeTDS if no file by the same
# name is found in the installation directory.
# For information about the layout of this file and its settings,
# see the freetds.conf manpage "man freetds.conf".
# Global settings are overridden by those in a database
# server specific section
[global]
# TDS protocol version
; tds version = 4.2
# Whether to write a TDSDUMP file for diagnostic purposes
# (setting this to /tmp is insecure on a multi-user system)
; dump file = /tmp/freetds.log
; debug flags = 0xffff
# Command and connection timeouts
; timeout = 10
; connect timeout = 10
# If you get out-of-memory errors, it may mean that your client
# is trying to allocate a huge buffer for a TEXT field.
# Try setting 'text size' to a more reasonable limit
text size = 64512
# A typical Sybase server
[egServer50]
host = symachine.domain.com
port = 5000
tds version = 5.0
# A typical Microsoft server
[ACME_POS]
host = 192.168.1.80
port = 60801 # also tried 1433
instance = SQLEXPRESS
tds version = 8.0
client charset = UTF-8
tsql -LH 192.168.1.80
ServerName RESOLVEIT-PC
InstanceName SQLEXPRESS
IsClustered No
Version 10.50.4000.0
tcp 60801
np \\RESOLVEIT-PC\pipe\MSSQL$SQLEXPRESS\sql\query
via RESOLVEIT-PC,0:1433
Oracle listener:
[oracle@oraDBsvr log]$ cat /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = acmepos)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
(PROGRAM = dg4odbc)
(HS = OK)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = oraDBsvr)(PORT = 1521))
ADR_BASE_LISTENER = /u01/app/oracle
[oracle@oraDBsvr log]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 16-SEP-2013 13:57:41
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oraDBsvr)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 16-SEP-2013 13:50:34
Uptime 0 days 0 hr. 7 min. 7 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/oraDBsvr/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oraDBsvr)(PORT=1521)))
Services Summary...
Service "acmepos" has 1 instance(s).
Instance "acmepos", status UNKNOWN, has 1 handler(s) for this service...
Service "dw" has 1 instance(s).
Instance "dw", status READY, has 1 handler(s) for this service...
Service "dwXDB" has 1 instance(s).
Instance "dw", status READY, has 1 handler(s) for this service...
The command completed successfully
Oracle tnsnames.ora
[oracle@oraDBsvr admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
dw =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = dw)
acmepos =
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
(CONNECT_DATA=(SID=acmepos)
(HS=OK)
Oracle sqlnet.ora
[oracle@oraDBsvr admin]$ cat sqlnet.ora
# sqlnet.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DIRECTORY_PATH= (EZCONNECT, TNSNAMES)
ADR_BASE = /u01/app/oracle
I can connect from the linux server to SQL Server, and query the database:
[oracle@oraDBsvr etc]$ tsql -S acme_pos -U acme_dw_user -P acme1234
locale is "en_US.utf8"
locale charset is "UTF-8"
using default charset "UTF-8"
1> select last_name from dbo.employees;
2> go
last_name
Davolio
Fuller
Leverling
Peacock
Buchanan
Suyama
King
Callahan
Dodsworth
(9 rows affected)
1>
However, I can’t get a response through Oracle OWB , and I get:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message: ORA-02063: preceding line from OWB_75
In the hs log file I get:
[oracle@oraDBsvr log]$ cat acmepos_agt_3821.trc
Oracle Corporation --- MONDAY SEP 16 2013 13:51:22.170
Heterogeneous Agent Release
11.2.0.1.0
HS Gateway: NULL connection context at exit
[oracle@oraDBsvr log]$
I am really stuck now and going round in circles and can’t see the wood for trees! Can anyone please help?!!
Many Thanks.
Rafe.Let us rewrite your ODBC DSN a little bit... Your current odbc.ini looks like:
[ACME_POS]
Driver = FreeTDS
Description = ODBC Connection via FreeTDS
Trace = 1
Servername = 192.168.1.80
Database = dbo
Let us change it a little bit so that we only need one config file - no odbcinst.ini nor freetds.conf file anymore:
[ACME_POS]
Driver =/usr/local/lib/libtdsodbc.so
Server = 192.168.1.80
Database
= dbo #### I have some doubts that you have a SQL Server database called dbo - one database that always exists is master - so as a test use master here or get the real database name of the SQL Server database you want to connect
Port = 60801 ## make sure it really is the correct port - best would be to check on the SQL server and then try telnet <ip> <port> if you can connect to the SQL server
TDS_Version = 8.0
QuotedId=YES
Especially the last 2 parameters are mandatory. TDS_Version specifies the TDS Version you have to use to connect to the SQL Server and QuotedID is required for DG4ODBC as it surrounds objevt names by double quotes.
What happens now when you try to connect with for example isql - the ODBC test utility shipped with the ODBC Driver manager?
In addition, could you please do me another favour and check the word size of DG4ODBC and the ODBC Driver Manager as well as the ODBC Driver - just execute:
file /u01/app/oracle/product/11.2.0/dbhome_1/bin/dg4odbc
file /usr/local/lib/libtdsodbc.so
file < the patch to your libodbc.so library>/libodbc.so
and post the output. -
Implementing non-blocking read
Hi all
I have some doubts about implementing non-blocking io in my application.
I am using Jsch library (an ssh implementation) to open an ssh connection with a host. The API only provides me with methods to open a connection and retreive the input & output streams. I want to make my read on inputstream non-blocking.In such a case is it possible to use nio for the purpose?
If it's not possible then I am planning to use threading to make read() non-blocking. Here also i need some clarifications. I am planning to use a ThreadPoolExecutor to create a thread pool for reading data. SO whenever i have a read i'll assign this task to the pool which will use one of the free threads to execute the inputStresm.read().
Now the question is if one of the threads in this pool blocks forever during a read since it didn't get any response from the other side, is there a way to stop that read and make that thread free again to execute more tasks? or will the thread block forever till the application is closed?
In my case i cannot afford to have too many such blocked threads, since this application will not be restarted very often. Once it is started it can go on for may be days or months.
Please suggest what would be best in my case taking into account performance as most important factor.
Thanks in advance.
Anuendasil wrote:
First of all, let me state that I agree with the others in saying that I don't fully agree with your premises.
That said, I believe that this does a non-blocking read based on the contract of InputStream.available() and .read(byte[], int, int):
private int nonBlockingRead(InputStream in, byte[] buffer) throws IOException {
return in.read(buffer, 0, Math.min(in.available(), buffer.length));
If the InputStream is obtained from a JSSE socket then it is my understanding that available() always returns zero. This is allowed under the InputStream.available() contract as defined in the Javadoc - http://java.sun.com/javase/6/docs/api/java/io/InputStream.html#available() . If I am right then your code will never read anything from a JSSE socket InputStream and I would suspect that Jsch is using JSSE sockets. -
WB_RT_GET_JOB_METRICS does not return values
DB v 10.2.0.2
OWB repository/client v 10.2.0.3
A DB function has a call to the Control Center transformation WB_RT_GET_JOB_METRICS to extract and preserve the metadata of number of records inserted/updated/deleted in a DB table.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1.
The control center transformation WB_RT_GET_JOB_METRICS does not return any values when used under the Post-Mapping Process(mapped to the DB function describe above) in a Map.
The input parameter ;Audit Id' to the Map is passed from a calling Process Flow. The following query is used to retrieve the Audit Id of the Map.,
SELECT execution_audit_id
INTO l_audit_id
FROM ALL_RT_AUDIT_EXECUTIONS
WHERE parent_execution_audit_id = P_AUDIT_ID;
And the retrieve l_audit_id is passed to the WB_RT_GET_JOB_METRICS transformation to extract the number of records inserted/deleted/updated with the execution of the map.
Gurus, please advice if the approach is appropriate to retrieve the number of records inserted/deleted/updated by the execution of the map. If not, any alternate method.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2. The control center transformation WB_RT_GET_JOB_METRICS returns values when used in a standalone pl/sql block with the appropriate audit_id.
Is this because the metadata for the Map execution is complete, whereas in the earlier attempt, the transformation is called within the map using the Post-Mapping process.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3. Since the option 1 did not return any value, tried other option of calling/executing a transformation(call the the DB function mentioned earlier) after the Map activity is successful in a ProcessFlow. Here, the transformation does not seem to be executing, any tips of correcting this issue.
Request the forum for some helpful tips to resolve the problem. TiA (Thanks in Advance) for the response.
Message was edited by:
user599655In a process flow, passed the pseudo variable to a transformation to run the WB_RT_GET_JOB_METRICS after the map execution. I am not sure if this is the best solution, but it worked for me.
Still trying to figure how to use the pre-defined transformation when working on expression.
Thanks.
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