There is a strange issue about sybase interfaces file. We have an application which is run on solaris sparc OS and this application uses open client (sybase OCS-12_5) for database operations. When we upgrade our database server to sybase 15.03, our application didn't work. then I start the research for figure out why it does not work. End of the my research, i found the the reason is sybase15.03's interfaces file. Somehow,15.03's interfaces file is damaged i think. But sybase 12.5 interfaces file and sybase 15.03 interfaces file is same.I checked interfaces file for unknown character or carrige return character but there is no any strange character in it. When I copied sybase12.5's interfaces file to sybase15 directory, application runs correctly. Is there anyone to explain this?
PS: Sybase libraries looks for $SYBASE env. variable and reads the $SYBASE/interfaces file for gather server information like server host and port
Thanks and regards.
Sounds like a minor error in the 15.0.3 interfaces file format.
Suggested approach to diagnosing:
(Unix) diff the working and non-working interfaces files - if the servers they describe is the same the difference should be apparent pretty quickly.
Check the format against the rules in Sybase documentation.
If the problem is still not manifest, then 'divide an conquer' might be the next step - try a smaller subset of the problem interfaces file.
Failing that, you could post equivalent entries from the two files here and see if the community can spot the problem.
Check for the space in between lines and make sure there is a extra empty line at the end of the interface file.
Another thing to make sure is the network setting you have choose. It should be the same. It would be most probably TCP. Some versions in 12.5 used to put other entries.
Another method to correct this is to use a DSCP method. This ensures that the interface file is correct.
Related
I am trying to open an MS Access database in Base using the instructions here . (I've tried both .mdb and .accdb)
I can follow the process described by Gord with no problems until the last step, where it asks me to save the database in LibreOffice format. I choose a filename (say mylinuxdb.odb), click OK, and then Base opens with this error:
The connection to the data source "mylinuxdb" could not be established.
org/apache/commons/logging/LogFactory
Note that it is complaining about the new .odb database, not the MS Access database. Nonetheless, no data is imported.
Can anyone help with this?
Thank you.
Revised answer:
It appears that this issue is specific to distributions like Linux Mint that install LibreOffice Base by default. Presumably in order to enable embedded HSQLDB databases they also install a rather old version of HSQLDB which conflicts with UCanAccess. To fix that, remove LibreOffice's copy of HSQLDB. For Linux Mint that would be
sudo apt remove libhsqldb1.8.0-java
(original answer)
I was able to reproduce your issue with LibreOffice 6.4.6.2 on Xubuntu 20.04. It looks like the setup instructions on Ask Ubuntu may need to be tweaked.
In the meantime try opening your .odb file, clicking through any errors. When Base opens, choose
Edit > Database > Properties …
and notice that the "Database URL" text box has "jdbc:" in front of it.
so if the textbox contains
jdbc:ucanaccess:///home/gord/Documents/Database1.accdb
then apparently Base will try to use
jdbc:jdbc:ucanaccess:///home/gord/Documents/Database1.accdb
and that won't work. We need to have just
ucanaccess:///home/gord/Documents/Database1.accdb
in the text box (as in the screenshot above).
This is NOT (as per chosen answer) "specific to distributions like Linux Mint that install LibreOffice Base by default". Such statements should be avoided as they are clearly very difficult to prove except with rigorous analysis of all other situations, which is clear was not done and in practical terms cannot be done.
I just encountered this message with an LO Base form which uses a MariaDB installation on Windows 10, using a JDBC connection with the mysql-connector-java-8.0.28.jar connector .jar. The form was created only minutes previously.
Interestingly, I happened to have a Python application running at the same time but, and I stress, this Python application does not use any kind of connection to any mysql database whatsoever. Nor, being CPython, does it use Java in any way whatsoever.
I find that when I close the Python application I am then able to open the LO Base form. Furthermore, after having first opened the LO Base form I am then able to run the Python application.
As to why this ludicrous error should arise in these circumstances in the first place, I do not yet know. Chalk it down to yet one more LO anomaly and oddity around which you have to navigate by hook or by crook.
I'm currently working an a rather large web project which is written using C servlets ( utilizing GWAN Web server ). In the past I've used a couple of IDEs for my LAMP/PHP jobs, like Eclipse.
My problems with Eclipse are that you can either mirror the project locally, which isn't possible in this case as I'm working on a Mac (server does not run on OSX), or use the "remote" view, which would re-upload files when you save them.
In the later case, the file is only partly written while uploading, which makes this a no-go for a running web server, or the file could become corrupted if the connection was lost during uploading. Also, for changing some character, uploading the whole file seems rather inefficient to me.
So I was thinking:
Wouldn't it be possible to have the IDE open Vim per SSH and mirror my changes there, and then just :w (save) ? Or use some kind of diff-files for changes?
The first one would be preffered, as it has the added advantage of Vim .swp files, which makes it possible that others know when someone is already editing the file.
My current solution is using ssh+vim, but then I lose all the cool features I have with Eclipse and other more advanced IDEs.
Also, regarding X-Forwarding: The reason I don't like it is speed. It feels way slower than just editing locally, and takes up unneeded bandwidth, when all I want to do is basically "text editing".
P.S.: I couldn't find any more appropriate tags for the question, especially no "remote" tag, but if you know any, feel free to add them. Also, if there is another similar question, feel free to point it out - I couldn't find any.
Thank you very much.
If you're concerned about having to transmit the entire file for minor changes, the only solution that comes to my mind is running (either continuously, or on demand) an rsync job that mirrors the remote site to your local system (and back). The rsync protocol just transmits the delta information. According to Are rsync operations atomic at file level?, the change is atomic.
Another possibility: run everything in a virtual machine on your Mac. The server and the IDE/text editor are both on the same virtual machine so you don't have to fear network issues.
Because the source code on the virtual machine is under some kind of VCS the classic code → test → commit process is trivial (at least theoretically).
Whenever I open one of the Quantum Grid demos in Delphi XE Pro (on Windows 7 32-bit), the following error is displayed for every table (I think) in the project:
error message http://www.tranglos.com/img/qgerror.png
The message is:
Network initialization failed.
File or directory does not exist.
File: C:\PDOXUSRS.NET
Permission denied.
Directory: C:\.
I understand permission issues writing to c:\, but the result is that while I can build and run the demo projects, no data is displayed, which makes the demos rather useless. And what kind of database writes its configuration to c:\ directory in the 21st century anyway? :) (Yes, I know very little about Paradox databases, but I won't ever be using one either. I just want to learn how to use the grid.)
Using BDE Administrator I've tried changing the Paradox "NET DIR" value to a folder with write permissions on the C drive. Result: now the database tables cannot find their data:
Path not found.
File: C:..\..\Data\GENRES.DB.
...and the unhelpfully truncated path gives no indication where the files are expected to be.
Is there a way to work around the problem so that the demos can load their sample data correctly?
Did you install the BDE correctly? It should use the DBDEMOS files. Do you see such an alias in the BDE administration utility? Can you open that database in one of the Delphi demos?
The BDE is not a XXI century database, it was developed twenty years ago and never upgraded lately. It's an obsolete tecnology, but because it comes still with every release of Delphi with a known database it is still often used in demos because nothing new has to be installed.
Anyway that file is not its configuration file. It's a sharing lock file to allow more than one user to use the database concurrently. Because it is a file based database without a central server, it has to use such kind of shared files. Usually its position is changed to a network share, but it defaults to C:\ for historical reasons.
Anyway it's not only the BDE still attempting to write in the prong directories. I still see a full bunch of applications attempting to write to C:\ (especially logs) or other read-only positions.
Using BDE Admin to change the location for PDOXUSRS.NET helped, but it wasn't sufficient. DevExpress did the right thing in specifying a relative folder for the data location, and the relative folder seems perfectly allright, but for some reason the DB can't find it.
Solution: under the \Demos\ folder find all the *.dfm files that contain the string
..\..\Data
and replace that string with the absolute path to the demos folder. That done, all the demos open correctly.
I know this message from our own applications. It has to do with security measures introduced with Windows Vista. The operating system trying to protect critical files denies access to them. There is a method how to bypass this mechanism without compromising security. Try to run your application in compatibility mode. When application is running in compatibility mode, read / write operations from / to system folders are redirected to "safe" directories located in C:\Users[Current User]\AppData\Local\VirtualStore.
More info on http://www.windowsecurity.com/articles/Protecting-System-Files-UAC-Virtualization-Part1.html.
My test program works fine. I can create a client and a server and run them against each other. I can set my KRB5_CONFIG environment variable and use a local configuration for testing.
For some reason when I place the code in our production software it fails. Even if I strip our main() function to just calling gss_import_name() with a hard coded name I end up with the message "Cannot open configuration file".
If I run truss then I see a lot of Oracle going on. It tries to open lots of different Oracle trace files. It also tries to open
/krb5/krb.conf
instead of the file I specify.
It's as if Oracle is giving us the wrong gss, or maybe some other option in our huge and complex build system. I note -L/usr/lib/sparcv9 though this is after my -lgss now if that matters (too long since I worked in C on a regular basis!). The libgss.so.1 in that directory is larger than the one in /usr/lib - though putting that option into my test program's link command does not break it.
Any help?
Thanks
- Richard
This fixed what appeared to be a similar problem for us:
export KRB5_CONFIG=/etc/krb5.conf
It does appear likely that Oracle sets this env var incorrectly if it's not already set.
$ grep -r KRB5_CONFIG $ORACLE_HOME
Binary file /usr/lib/oracle/11.1.0.1/client64/lib/libclntsh.so matches
Binary file /usr/lib/oracle/11.1.0.1/client64/lib/libclntsh.so.11.1 matches
$ grep -r '/krb5/krb.conf' $ORACLE_HOME
Binary file /usr/lib/oracle/11.1.0.1/client64/lib/libclntsh.so matches
Binary file /usr/lib/oracle/11.1.0.1/client64/lib/libclntsh.so.11.1 matches
I found that the Oracle libraries contained an implementation of GSS. To make my code work I ensured I linked "-lgss" before linking any of the Oracle libraries.
I've not tested to see if this upsets Oracle in single sign-on, because we use Oracle with user name and password. That works fine.
I ran in to the very same issue with Oracle 11.2.0.4.0 on HP-UX 11.31 and wasted almost an entire day for that. Indeed, the crappy Oracle lib peforms a putenv with /opt/krb5/krb.conf and the tip from Richard Corfield makes the app even crash. The only workaround is to create a symbolic link. I have created a service request with Oracle for that issue.
Update (2014-06-02): I have received an update from Oracle. They confirmed the bug. It seems like there is a private GSS-API which is redefining symbols.
Bug 10184681 - ORACLE NEEDS TO USE VERSIONED SYMBOLS TO AVOID EXTERNAL SYMBOL CONFLICTS
This issue has been open since 2010-10. Terrible.
Is there any way to have something that looks just like a file on a Windows file share, but is really a resource served up over HTTP?
For context, I'm working with an old app that can only deal with files on a Windows file share, I want to create a simple HTTP-based service to serve the content of the files dynamically to pick up real time changes to the underlying data on request.
WebDAV (basically) takes an existing directory, and shares it over HTTP - which sounds like the opposite of what you want.
You need something that speaks SMB/CIFS on one end, and your own code on the other. The easiest way to do that is with a userspace file system.
To that end, here's a couple of links:
WinFUSE, which is kind of a barebones CIFS/SMB server that can host your own filesystem. I've done a couple of small samples with it - and the docs are terrible, but it more or less worked.
Dokan, a userspace file driver with .NET bindings. I haven't used this one, but it looks promising. It has both .NET and Ruby bindings, so you should be able to get a POC up pretty quickly.
Callback File System - yet another userspace file system. Again, I have no experience with this one.
A Linux box with SAMBA and FUSE that shares the drive out to the Windows box.
This won't answer your question in any meaningful way, but maybe it will get you pointed in the right direction. Look into serving the "file(s)" via WebDAV--SharePoint uses this and its files can be accessed exactly as you want, as a file share where the transport mechanism is HTTP. Unfortunately I can't give any more detailed info, as I've only worked on the client end of WebDAV and not the server side of things.
I think serving up files from WebDAV might be what you're looking for.