This pseudo source is the layout of my Halcon application:
[sourceCode]
[sourceCode]
[sourceCode]
[localProcedure]
[sourceCode]
[localProcedure]
[sourceCode]
When I create a procedure file (.hdvp) of the above pseudo source the local procedure's content is lost. Is there a way to preserve this?
That's not possible with the procedure, but you can save and run an entire program in HDevEngine if that's what you're after.
Related
A colleague gave me some code to run. I need to set the archive log location to a directory inside db_recovery_file_dest . I am using a VirtualBox VM , called "Oracle Developer Days"
I'm trying to run the following command :
ALTER SYSTEM SET log_archive_dest_1 = '/home' SCOPE=both;
But it's generating this error :
SQL> ALTER SYSTEM SET log_archive_dest_1 = '/home' SCOPE=both;
ALTER SYSTEM SET log_archive_dest_1 = '/home' SCOPE=both
*
ERROR at line 1:
ORA-32017: failure in updating SPFILE
ORA-16179: incremental changes to "log_archive_dest_1" not allowed with SPFILE
SQL>
What is the SPFILE ?
Also , could the problem be that I'm using a Virtual Machine ?
The correct syntax is ALTER SYSTEM SET log_archive_dest_1 = 'LOCATION=/home' SCOPE=both;. It's in the docs: find out more.
You shouldn't be setting it to /home. I hope that's a just a simplification you've made for posting here.
"What is the SPFILE ?"
You need to understand what you're doing. Please read the documentation and learn some basic concepts about the Oracle database and being a DBA. Find out more.
Which Oracle version are you using?
SPFILE stands for Server Parameter File (called PFILE prior to 9i release) it contains some parameters which is used by Oracle to initialize certain variables at the time when database is brought up.
You can use the below mentioned query to check where your server parameter (SPFILE) is stored.
show parameter spfile
Regards
Andy
Need some help, because I can't find any solution for my problems with DBD::Oracle.
So at first, this is the current situation:
We are running Apache2 with mod_perl 2.0.4 at our company
Apache web server was set up with a startup script which is setting some environment variables (LD_LIBRARY_PATH, ORACLE_HOME, NLS_LANG)
In httpd.conf there are also environment variables for LD_LIBRARY_PATH and ORACLE_HOME (via SetEnv)
We are generally using the perl module DBI with driver DBD::Oracle to connect to our main database
Before we create a new instance of DBI we are setting some perl env variables, too (%ENV). We are setting ORACLE_HOME and NLS_LANG.
So far, this works fine. But now we are extending our system and need to connect to a remote database. Again, we are using DBI and DBD::Oracle. But for now there are some new conditions:
New connection must run in parallel to the existing one
TNSNAMES.ORA for the new connection is placed at a different location (not at $ORACLE_HOME.'/network/admin')
New database contents are provided by stored procedures, which we are fetching with DBD::Oracle and cursors (like explained here: https://metacpan.org/pod/DBD::Oracle#Binding-Cursors)
The stored procedures are returning object types and collection types, containing attributes of oracle type DATE
To get these dates in a readable format, we set a new env variable $ENV{NLS_DATE_FORMAT}
To ensure the date format we additionally alter the session by alter session set nls_date_format ...
Okay, this works fine, too. But only if we make a new connection on the console. New TNS location is found by the script, connection could be established and fetching data from the procedures by cursor is also working. Alle DATE types are formatted as specified.
Now, if we try to make this connection at apache environment, it fails. At first the datasource name could not resolved by DBI/DBD::Oracle. I think this is because of our new TNSNAMES.ORA file or rather the location is not found by DBI/DBD::Oracle in Apache context (published by $ENV{TNS_ADMIN}). But I don't know why???
The second problem is (if I create a dirty workaround for our first one) that the date format, published by $ENV{NLS_DATE_FORMAT} is only working on first level of our cursor select.
BEGIN OPEN :cursor FOR SELECT * FROM TABLE(stored_procedure) END;
The example above returns collection types of object which are containing date attributes. In Apache context the format published by NLS_DATE_FORMAT is not recognized. If I use a simple form of the example like this
BEGIN OPEN :cursor FOR SELECT SYSDATE FROM TABLE(stored_procedure) END;
the result (a single date field) is formatted well. So I think subordinated structures were not formatted because $ENV{NLS_DATE_FORMAT} works only in console context and not in Apache context, too.
So there must be a problem with the perl environment variables (%ENV) running under Apache and mod_perl. Maybe a problem of mod_perl?
I am at my wit's end. Maybe anyone in the whole wide world has a solution ... and excuse my english :-) If you need some further explanations, I will try to define it more precisely.
If your problem is that changes to %ENV made while processing a request don't seem to be honoured, this is because mod_perl assumes you might be running multiple threads and doesn't actually change the process environment when you change %ENV, so external libraries (like the oracle client) or child processes don't see the change.
You can work around it by first using the prefork MPM, so there aren't any threading issues, and then making changes to the environment using Env::C instead of the %ENV hash.
I have a program that will run a query, and return results in report viewer. The issue is we have 10 locations, all with their own local database. What I'd like to do is have each location use the program and utilize the App.config file to specify which database to connect to depending on which location you are. This will prevent me from having to create 10 individual programs with separate database connections. I was thinking I could have 3 values in the app.config file "Database" "login" "password" Generally speaking the databases are on the .30 address... so it would be nice to be able to have them set the config file to the database server IP...
For example:
Location: 1
DatabaseIP: 10.0.1.30
Login: sa
Password: databasepassword
Is it possible to set something like this up using the app.config file?
You should take a look on the resource files.
Originally, they are intended for localization, but they should work for you also.
Go to your project Properties, and set up an Application Setting --> Type (Connection String) from the drop down. This will result in a xlm config file in your output directory in which you can modify the connection string post-compile.
I ended up using a simple XML File to do this. I used this site to accomplish it. I first wrote the XML using the form load, then switched it to the read.
I have an issue with a very simple task in SSIS 2012.
I have a for-each container that runs in FOR-EACH-FILE Enumerator mode. I want to read a target folder with XML files. The path to the folder is correctly configured. The files field is set to *.xml
The variable mapping is defined with the follwing Variable: User::FileVar , Index 0.
Now I add a simple data flow task inside the container. The dataflow task only has a XML-Data Source task, that's it. For the XML Data source task, the XSD location is set. When I click choose columns, I can see the columns from the XSD schema.
BUT: When I save the XML task , I always get the error message: The Property XMLDataVariable is empty. I tried both data Access modes, XML file from variable and XML data from variable. The error message remains, I cannot run the package.
I don't use any expressions, neither at the foreach loop container nor at the data flow task.
I dont know what's wrong here, I did the steps exactly as shown in some tutorials for older versions of SSIS.
Do you have any ideas?
The issue is that the XML Source is trying to validate the existence of the given file during the design time. However, you will know the file name only during runtime when the Foreach loop container executes and loops through every XML file available in a given folder.
I recreated an SSIS 2012 package using my answer to one of other SO questions.
SSIS reading multiple xml files from folder
I was able to reproduce the error The property "XMLDataVariable" on the XML Source was empty
On the XML source, I set the property ValidateExternalMetadata to False. Setting this to false will force the package not to verify the existence of the xml file path during design time.
I was successfully able to execute the package.
Hope that helps.
for some test I need to run a data driven test with a configuration that is generated (via reflection) in the ClassInitialize method (by using reflection). I tried out everything, but I just can not get the data source properly set up.
The test takes a list of classes in a csv file (one line per class) and then will test that the mappings to the database work out well (i.e. try to get one item from the database for every entity, which will throw an exception when the table structure does not match).
The testmethod is:
[DataSource(
"Microsoft.VisualStudio.TestTools.DataSource.CSV",
"|DataDirectory|\\EntityMappingsTests.Types.csv",
"EntityMappingsTests.Types#csv",
DataAccessMethod.Sequential)
]
[TestMethod()]
public void TestMappings () {
Obviously the file is EntityMappingsTests.Types.csv. It should be in the DataDirectory.
Now, in the Initialize method (marked with ClassInitialize) I put that together and then try to write it.
WHERE should I write it to? WHERE IS THE DataDirectory?
I tried:
File.WriteAllText(context.TestDeploymentDir + "\\EntityMappingsTests.Types.csv", types.ToString());
File.WriteAllText("EntityMappingsTests.Types.csv", types.ToString());
Both result in "the unit test adapter failed to connect to the data source or read the data". More exact:
Error details: The Microsoft Jet database engine could not find the
object 'EntityMappingsTests.Types.csv'. Make sure the object exists
and that you spell its name and the path name correctly.
So where should I put that file?
I also tried just writing it to the current directory and taking out the DataDirectory part - same result. Sadly, there is limited debugging support here.
Please use the ProcessMonitor tool from technet.microsoft.com/en-us/sysinternals/bb896645. Put a filter on MSTest.exe or the associate qtagent32.exe and find out what locations it is trying to load from and at what point in time in the test loading process. Then please provide an update on those details here .
After you add the CSV file to your VS project, you need to open the properties for it. Set the Property "Copy To Output Directory" to "Copy Always". The DataDirectory defaults to the location of the compiled executable, which runs from the output directory so it will find it there.