As the title says, I want to connect PostgreSQL (I'm using the 9.6 x86 version) to HammerDB, an open source database load testing and benchmarking tool (I'm interested in the TPC-C Benchmark).
The thing is that I can do this connection by using MS SQL Server (2014), because it is relatively easy. However, I'm not used to use PostgreSQL. When I try to create Virtual Users on HammerDB (that's the 1st step to do, then you should be able to perform the transactions) I get the following error:
Error in Virtual User 1: Failed to load Pgtcl - Postgres Library Error
I did some research about this, and I found that, and I quote "PostgreSQL is VERY particular about the libraries in its PATH - they have to be the right ones and ONLY the right ones any other configuration will cause errors".
The problem is that HammerDB couldn't load library libpgtcl.dll. There they mention that to fix the problem, one should check that the PostgreSQL bin directory has been added to the path during install, but at this point I'm totally lost and I don't know what to do. I simply can´t get what they mean and how to do it.
I hope at least one of you could help me. I would appreciate it a lot.
Sorry in advance for my mistakes in English, I'm a Spanish speaker.
Well, I have solved the problem, and it is very simple.
Everything is about Setting Windows PATH for PostgreSQL, and I found that here.
Open my Computer ==>
right click inside my computer and select properties ==>
Click on Advanced System Settings ==>
Environment Variables ==>
from the System Variables box select "PATH" ==>
Edit... ==>
Then add this at the end of whatever you find their
;C:\PostgreSQL\9.2\bin; C:\PostgreSQL\9.2\lib
after that continue to click OK
That's all. So this is what you should do if you are having trouble when trying to connect PostgreSQL to HammerDB, and in general, when trying to use PostgreSQL tools.
Related
I'm scared to ask this because people can be a little mean on here but I've watched 1000 of YouTube videos and went through just as many google searches. I was trying to create a data dictionary for mysql diagram. I used this website https://dataedo.com/kb/tools/mysql-workbench/how-to-export-data-dictionary#toc_0 to help me. I downloaded the .py link listed in the install plugin step. The followed the instructions in mysql. It said the plugin install was successful and to restart my workbench. After that I started getting the error shown in the picture. I have tried everything:
Restart workbench
Repair workbench through msi download
Followed the steps in this link: https://www.tutorialspoint.com/how-do-i-kill-all-the-processes-in-mysql-show-processlist
Updated all my sql products in mysql installer
Made sure mysql services were turned on and running
I don't know what else to do. I can't even open workbench to see if the plugin is the issue because again I can't get in. I just need some help
That is a strannge error, where mysql workbench has some corrupt files.
Deinstall MySQL Workbench with the MySQL Installer
Install Workbench again
So everything will start normal again, the configuration and connections will stay and can be used again as normal
This is not an installation issue, so don't waste your time by trying to fix this issue by repeating the installation.
The error comes from the approach where MySQL Workbench tries to ensure there's only one instance of it running. For that it searches the process list for another instance and, if one was found, sends the command line parameters it got to that instance, letting the already running instance handle them (and shuts itself down after that).
But again: this happens only if another instance is found, so check your process list carefully. Filter by the term "MySQL" to see any MySQL related processes (including that of a MySQL server). Shutdown/kill any of these processes and try launching WB again.
Same issue happened to me and it was like what the heck. Don't waste your time to uninstall and reinstall because it won't solve your problem.
Solution: open your file explorer and delete the entire folder "Workbench"
Path: %appdata%\MySQL\Workbench
I have the same issue with this file.
Just as Jr Relampagos says, delete the .py file here : AppData\Roaming\MySQL\Workbench\modules
Restart Workbench, it works for me.
With me I'm just go to C:\Users<USER>\AppData\Roaming\MySQL\Workbench\modules and then delete the .py file you install, then open the Workbench again
I am having an odd problem with PostGreSQL/PostGIS on a Windows 10 machine.
I have successfully installed PostGIS many times without issue over the years, most recently last week on a Windows 10 machine at work. I typically use QGIS as my client, so have a fair idea how these things need to be configured and operated.
Over the weekend, I downloaded the latest PostGres 11 installer with Stackbuilder, and installed PostGres & PostGIS. pgAdmin4 seems to show everything is as it should be, and the sample 'postgis_23_sample' database is present and correct.
However, using QGIS DB Manager, when I try to connect to the database (on port 5432), whilst I can see the sample database and public schema, I cannot create a new table with geometry, or load any data (e.g. a simple shapefile) into the database. The error message tells me that the 'addGeometryColumn' function does not exist. I checked that the PostGIS extension is installed - which it is. (I ran 'CREATE EXTENSION postgis' again to confirm this.)
So, I went back to pgAdmin, and tried creating a table with geometry via SQL, but got the same error: Creating a table without geometry works just fine. As soon as I try to create a geometry column, I get the error. It seems to me that the PostGIS extension is somehow not being 'found' by PostGres.
I have uninstalled and reinstalled various combinations of PostGres, PostGIS and QGIS over the weekend - but get the same error. I created a new Windows account, and tried installing the stack there: same thing happened.
I also tried uninstalling everything and then installing the 'Portable GIS' stack by Astun. These are much older versions of QGIS and PostGIS, but in theory the installer configures them all to work together. (That, at least, has been my past experience of using Portable GIS at work.) In this instance, I got the same error about the missing AddGeometryColumn function.
I am wondering if the various installs of PostGIS, QGIS and other tools over the last year or so have left some stubborn configuration entries (maybe in the registry?) that uninstallers have not been able to remove. Could something like that be upsetting my recent PostGres insatllations? It feels as though something is preventing DB clients from locating the PostGIS services on the assigned port. Having said that, PostGres iteslef seems to be working fine, so maybe that is nonsense.
In any case, if anyone has any ideas how I can begin to debug and fix this, I would be hugely grateful. (In the meantime, I am about to try the OSGeoLive Lubuntu VM, which at least will enable me to get some proper work done - I hope.)
Thank you...
I am trying to debug a program using Entity Framework code first on my personal (work) computer.
We have recently had a domain migration, meaning that the user I log in as now is not the same that I used before. This caused me to loose access to the databases I had on the computer. To get around this, I have uninstalled everything to do with Microsoft SQL Server on the computer, and installed the latest version of Microsoft SQL Server, 2014 - 12.0.4213.0 . I then restored the database I need.
When I first tried to run the program, Visual Studio complained that the project is set up to use SQL Server Express, which was not installed. The recommended solution is to change the project to use SQL Server instead. To do this, I must click on "the database file" and follow the instructions. I have looked through the entire solution. There is a great many files, but I found no good candidate for "the database file."
It seems that my Google fu is not strong enough to find anything about this. So my question is: how do I change the project to use SQL Server?
I also have a second, related question. I tried to solve the problem by installing SQL Server Express. However, when I try to restore the database to this, no base appears in the drop down list. When I try to run the program now, I get another error:
Unable to create the file 'c:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\DATA\Timelønsblanket.mdf' because it already exists.
I guess that this is also why I cannot restore the database. What I have found in websearches warns that I should not manually delete .mdf files.
Any advice on what to do?
I have solved the problem. All that was needed was a correct connection string. No need to find a "database file".
How do we attach a sql query such as join query to an existing gdb process in eclipse? Whenever I try to fork the given process using debug configurations in eclipse, which is a shared library , I am getting the following error:
No source available for "__kernel_vsyscall() at 0xb729c424"
Also, whenever I set break points in a specific program in eclipse, control goes to main.c and finally the process never comes back to the actual program.
Is there any way that the process be constrained only to my specific program?
how do we attach a sql query such as join query to an existing gdb process in eclipse
Um, what?
Are you attempting to debug a PostgreSQL server backend? If so, see the PostgreSQL wiki page that provides lots of details on the topic.
Whenever I try to fork the given process using debug configurations in eclipse, which is a shared library
What is a shared library? Eclipse isn't. PostgreSQL isn't. So what's the shared library here?
Are you trying to debug a PostgreSQL extension? If so, see the above link for details on attaching to a PostgreSQL server backend.
No source available for "__kernel_vsyscall() at 0xb729c424"
That's normal. It's just telling you that there's no source code on record for the __kernel_vsyscall call that's the entrypoint into syscalls in linux-gate.so via glibc when using sysenter.
The stack below it should be more informative. Get a backtrace, then look at the lower stack frames.
See:
What is __kernel_vsyscall?
Having trouble finding the method __kernel_vsyscall within the Linux kernel
http://www.trilithium.com/johan/2005/08/linux-gate/
Your "also" is really a separate question, and it's pretty hard to answer it usefully with the total lack of information provided. Try posting a new, more detailed question on just that topic. Specify how you compiled the program, set it up for debugging, how you're running it, where you're trying to set breakpoints, etc.
Do you have recommendations for a good PostgreSQL editor plugin for Eclipse?
The PostgreSQL code I have isn't very complex. However I'd like to edit it with syntax-coloring, decent auto-identation, code completion, etc., and it would be sweet to be able to send blocks or entire files to a jdbc connection and get the results. Up until now, I have edited my .sql files with Emacs, and try things by copying/pasting segments into a psql terminal I have next to Emacs. Some of my code uses the psql primitives such as \set var value etc. For example:
\set t mytable
drop table if exists :t;
create table :t (...);
However I would be happy to eliminate this and refactor the code to be proper PL/pgSQL functions. Or perhaps better, implement the dependency and procedural logic in Java and issue the sql queries via JDBC. I still need to edit the sql files and try bits and pieces of them during development.
I tried the "official" Data Tools Platform (http://eclipse.org/datatools/) and configured it to use my localhost:5432 (which in fact is a port-forward via SSH to the actual PostgreSQL server that I'm using). However, connecting to the DB hangs for several minutes (Eclipse doesn't even refresh the screen). In general it feels quite heavy/slow
and I'm always afraid of if hanging without ability to interrupt it (it happened a few times and the only solution is to kill Eclipse; as you probably know, killing Eclipse isn't good as it's very hard/impossible to recover unsaved files).
The other plugin I tried is Toby's PL/SQL editor (https://sourceforge.net/projects/plsqleditor/), which seems very nice and promising, except the last signs of life on the sourceforge forums appear to be around 2007. Also I couldn't configure it to use the postgresql-9.0-801.jdbc4.jar that I have, and so I am unable to connect to my DB.
Any suggestions gladly appreciated.
A free Eclipse plugin for Oracle and PostgreSQL can be found at http://www.toadworld.com/products/toad-extension-for-eclipse/default.aspx
The plugin is in development.