Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I found a workaround in this <a href="http://www.oracle.com/technetwork/server-storage/solaris10/subprocess-136439.html" rel="nofollow noreferrer">article</a>, basically the idea is that you create a process early on in the startup of your application that you communicate with (via input streams) and then that subprocess executes your commands for you. </p> <pre><code>//you would probably want to make this a singleton public class ProcessHelper { private OutputStreamWriter output; public ProcessHelper() { Runtime runtime = Runtime.getRuntime(); Process process = runtime.exec("java ProcessHelper"); output = new OutputStreamWriter(process.getOutputStream()); } public void exec(String command) { output.write(command, 0, command.length()); } } </code></pre> <p>then you would make a helper java program</p> <pre><code>public class ProcessHelper { public static void main(String[] args) { BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); String command; while((command = in.readLine()) != null) { Runtime runtime = Runtime.getRuntime(); Process process = runtime.exec(command); } } } </code></pre> <p>what we've essentially done is make a little 'exec' server for your application. If you initialize your ProcessHelper class early on in your application it will successfully create this process then you simply pipe commands over to it, because the second process is much smaller it should always succeed. </p> <p>You could also make your protocol a little more in depth, such as returning exitcodes, notifying of errors and so on. </p>
    singulars
    1. This table or related slice is empty.
    1. POJava Runtime.getRuntime().exec() alternatives
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USDave Yarwood
    1. USluke
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThis will not work propably for a webapp. The webapp is deployed anytime during the server is running - consuming any amount of memory that time.
      singulars
      1. PO
      1. USArne Burmeister
    2. CO@Arne Burmeister - that is true, if you are running this on a shared TomCat instance then you might have an arbitrarily large amount of allocated to the process by the time this runs. But if you are running on a nonshared TomCat Server (this is the only application) and you can hook into the application startup to execute this it should work.
      singulars
      1. PO
      1. USluke
    3. COAs I recently state above, I'm not looking for a tomcat specific answer. We have tomcat with multiple webapps as well as multiple other java processes that could all potentially see the same problem.
      singulars
      1. PO
      1. UStwilbrand
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload