Meeting trouble when inserting a record into dababase using JDBC.
Hi, everyone!
If I want to insert a record in a table of a database, but I
do not know whether there is already a primary key existing in
the database (I mean the value of the record which I want to insert
conflicting, i.e. duplicating, with one of the value of primary
key in the database). So, I have two solutions:
1. check whether there is already a primary key which confilcting
with the value I want to insert, if not, insert into database.
2. do not do any check before and insert the record directly, and catch
SQLException.
But they both have shortcomings. Solution 1 will lost time (must checking first)
and solution 2 will throw a SQLException, and from the Exception, I do not know
how can I infer it is a primary key conflicting exception.
(I do not know how to distinguish it from other type of SQLException, for example,
database name error exception or SQL statement syntax error).
I do not know whether I have made myself understood.
Who have better solutions?
Thanks in advance,
George
If I use solution 2, can I get some information from
SQLException? For example, can the exception tell me
whether it is a duplicated primary key error or SQL
statememt syntax error? You don't have to look at the error text. You should
look at the error code. But keep in mind that
it is vendor specific. A duplicate key error in Oracle
has different error code then in SQL Server.Sounds good in theory, in practice it leaves a lot to be desired. First one still has to figure out which codes are problematic, and there is still no guarantee that they won't change. Moreover you might find that the code is used for different types of errors, and that won't work.
>
May you can have a look at the sqlstate, this should
be the same across different DB's as it is defined int
he SQL92 standard, but I wouldn't bet on it...
I would bet - against it.
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Carlos.1. Make a backup of the extproc.c file in the c:\orant\rdbms80\extproc
directory.
2. Create a file called extern.c in the c:\orant\rdbms80\extproc directory.
The "extern.c" file :
#include <oci.h>
#define NullValue -1
#include<stdio.h>
#include<string.h>
long __declspec(dllexport) OutputString(context ,
path , path_ind ,
message , message_ind,
filemode , filemode_ind ,
len , len_ind )
char *path;
char *message;
char *filemode;
int len;
OCIExtProcContext *context;
short path_ind;
short message_ind;
short filemode_ind;
short len_ind;
FILE *file_handle;
int i ;
char str[3];
int value;
/* Check whether any parameter passing is null */
if (path_ind == OCI_IND_NULL || message_ind == OCI_IND_NULL ||
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text initial_msg = (text )"One of the Parameters Has a Null Value!!! ";
text *error_msg;
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We do not have to free this memory - PL/SQL will do that automatically. */
error_msg = OCIExtProcAllocCallMemory(context,
strlen(path) + strlen(initial_msg) + 1);
strcpy((char *)error_msg, (char *)initial_msg);
/*strcat((char *)error_msg, path); */
OCIExtProcRaiseExcpWithMsg(context, 20001, error_msg, 0);
/* OCIExtProcRaiseExcp(context, 6502); */
return 0;
/* Open the file for writing. */
file_handle = fopen(path, filemode);
/* Check for success. If not, raise an error. */
if (!file_handle) {
text initial_msg = (text )"Cannot Create file ";
text *error_msg ;
/* Allocate space for the error message text, and set it up.
We do not have to free this memory - PL/SQL will do that automatically. */
error_msg = OCIExtProcAllocCallMemory(context,
strlen(path) + strlen(initial_msg) + 1);
strcpy((char *)error_msg, (char *)initial_msg);
strcat((char *)error_msg, path);
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i = 0;
while (i < len)
/* Read the hexadecimal value(1). */
str[0] = message;
i++;
/* Read the hexadecimal value(2). */
str[1] = message[i];
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if (str[0] > 64 && str[0] < 71)
str[0] = str[0] - 55;
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str[0] = str[0] - 48;
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else
str[1] = str[1] - 48;
/* Convert the hex value to binary (first & second byte). */
value = str[0] * 16 + str[1];
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fprintf(file_handle,"%c",value);
i++;
/* Output the string followed by a newline. */
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fclose(file_handle);
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need to run vcvars32.bat file before running this batch file. This will
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extproc_connection_data.world =
(DESCRIPTION =
(ADDRESS =
(PROTOCOL = IPC)
(KEY = ORCL)
(CONNECT_DATA = (SID = extproc)
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# Generated by Oracle Net8 Assistant
LISTENER8 =
(ADDRESS = (PROTOCOL = TCP)(HOST = winnt_nsc)(PORT = 1521))
SID_LIST_LISTENER8=
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = winnt_nsc)
(SID_NAME = ORCL)
(SID_DESC =
(SID_NAME = extproc)
(PROGRAM = extproc)
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p_Path IN VARCHAR2,
p_Message IN VARCHAR2,
p_mode in VARCHAR2,
p_NumLines IN BINARY_INTEGER) AS EXTERNAL
LIBRARY externProcedures
NAME "OutputString"
With context
PARAMETERS (CONTEXT,
p_Path STRING,
p_path INDICATOR,
p_Message STRING,
p_message INDICATOR,
p_mode STRING,
p_mode INDICATOR,
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Name Null? Type
C1 NUMBER
C2 BLOB
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i1 blob;
len number;
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i2 number;
i3 number := 10000;
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end; -
ORA-01654 error message when inserting multiple records
Hello all,
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G:\studies\Chapter11\MakeDB.java:43: 'void' type not allowed here
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G:\studies\Chapter11\MakeDB.java:102: 'void' type not allowed here
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G:\studies\Chapter11\MakeDB.java:119: 'void' type not allowed here
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^
G:\studies\Chapter11\MakeDB.java:133: 'void' type not allowed here
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^
G:\studies\Chapter11\MakeDB.java:159: 'void' type not allowed here
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^
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Can you use ESB to insert multiple records into a Database
We have an XML file that has a Parent/Child relationship.
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I will send you an example
cheers
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Different methods involved in insertion of records into the table
hi all,
i am using Forms [32 Bit] Version 6.0.8.24.1 (Production)
Oracle Database 10g Release 10.2.0.1.0 - Production
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select ....
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How to insert new records into database table at runtime on click update?
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data: node_sflight type ref to if_wd_context_node,
elem_sflight type ref to if_wd_context_element,
lt_elements type WDR_CONTEXT_ELEMENT_SET,
stru_sflight type if_main=>element_sflight_node,
it_flights type if_main=>elements_sflight_node.
" navigate from <CONTEXT> to <SFLIGHT_NODE> via lead selection
node_sflight_node = wd_context->get_child_node( name = 'SFLIGHT_NODE' ).
lt_elements = node_sflight->get_elements( ).
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loop at lt_elements into elem_sflight.
elem_sflight->get_static_attributes( importing static_attributes = stru_sflight ).
append stru_sflight to it_flights.
endloop.
" Finally save the entries on to the database
modify ZSFLIGHT99 from table it_flights.
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endif.
However a word of caution here.... SAP doesn't ever recommend directly modifying the database through an SQL query. You would preferably make use of a BAPI for the same. Try go through Thomas Jung's comments in [here|modify the data base table which is comming dynamiclly;.
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Insert multiple records into database through internal table
Hi
please help me how to insert multiple records into database through internal tableHi,
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import java.io.*;
import java.net.*;
import java.sql.*;
import java.util.*;
public class InteractWithExcel {
static final String DRIVER_NAME = "sun.jdbc.odbc.JdbcOdbcDriver";
static final String DATABASE_URL = "jdbc:odbc:EXCELJDBCTest; READONLY=0";
public static void main(String[] args) {
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Connection conn = null;
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e.g. there three records in the spreadsheet, namely 1, 2, 3,
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how come???
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Any ideas how I can insert a pdf into word, using the insert object option. However the pdf i want to insert has text and lines annotated, but once inserted the comments don't appear???? any help would be greatly appreciated.
You will need to find a forum for MS Word since that is the software that you are trying to manipulate in this. If you think the processing/creation of the PDF plays a role then you should ask in the forum for the software that you are using to create the PDF.
This forum is for issue regarding downloading and installing Adobe trial products, so in any circumstance, your issue does not fit in this forum. -
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Is this true.Hi,
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see this thread
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