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Re: Windows x86-64 One-Click Install (9.1.2-1, 9.0.6-1) hangs on "initialising the database cluster" (with work-around)

From: Eric Borts <eborts(at)bltek(dot)com>
To: Dharmendra Goyal <dharmendra(dot)goyal(at)enterprisedb(dot)com>
Cc: Dave Page <dpage(at)pgadmin(dot)org>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: Windows x86-64 One-Click Install (9.1.2-1, 9.0.6-1) hangs on "initialising the database cluster" (with work-around)
Date: 2012-01-27 19:41:12
Message-ID: 4F22FDD8.1020708@bltek.com (view raw or flat)
Thread:
Lists: pgsql-bugs
Regarding my final point:

"Similarly, you may prefer to have the default action for a batch file 
(.bat) changed to Edit instead of Open. Double-clicking the file will 
not run the commands in the file, and if users want to run the file, 
they can use the*Open*command on the shortcut menu."
http://support.microsoft.com/kb/320036

This advice would be likely to hang the PostgreSQL installer.

Cheers,
Eric


On 1/27/2012 12:32 PM, Eric Borts wrote:
> Hi Dave and Dharmendra,
>
> It is not the "%COMSPEC% /c" call that causes the window to popup, but 
> the WindowStyle parameter to WShell.Run (see Table 3.9 in MS TechNet 
> WSH Objects / Running Programs 
> <http://technet.microsoft.com/en-us/library/ee156605.aspx>). Setting 
> WindowStyle to "0" creates a hidden window. This is how the code in 
> the installer is currently written. Setting it to "1" creates a 
> visible window. This happens when using "%COMSPEC% /c" or when calling 
> the batch file directly.
>
> Here is a another site recommending 
> <http://classicasp.aspfaq.com/general/how-do-i-execute-a-dos-command/batch-file/exe-from-asp.html> 
> the use of "%COMSPEC% /c" with a "0" second parameter, along with a 
> note about the window (in)visibility:
>
>     "[...] do not run any command that raises a prompt, dialog, msgbox 
> or any other GUI. This [...] could hang your entire system (since the 
> invisible GUI will be waiting for a reply [...]"
>
> Test code is attached that demonstrates using COMSPEC with a "0" 
> versus a "1".
>
> Output from SET command is also attached. Note that I've verified that 
> this problem still occurs in Safe Mode.
>
> Any other suggestions? I've also posted to StackOverflow 
> <http://stackoverflow.com/questions/9038927/vbscript-hangs-when-launching-batch-file-with-wshell-script-run> 
> for adivce.
>
> A separate line of reasoning for using COMSPEC is that the calling of 
> the .bat directly assumes that default action is to execute the batch 
> file. If a user has modified their default .bat actions (which I have 
> not), the postgres installer will fail. Using COMSPEC will avoid that 
> pitfall.
>
> I'll keep you posted if I discover why my machine doesn't execute 
> batch files by default, or how it ended up in this condition. The 
> computer is only about 2 months old, so I haven't had *that* much time 
> to overwhelm it with installs.
>
> Eric

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Subject: Re: Segfault in backend CTE code
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Subject: Re: Windows x86-64 One-Click Install (9.1.2-1, 9.0.6-1) hangs on "initialising the database cluster" (with work-around)

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