Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Hi fellow monks,

I use DBI to connect to a MySQL database on a remote server (Linux). The main Perl application forks a couple of child processes which all do queries on the database. Each process opens its own database connection on startup.

The problem is that the main process (which forks three child processes at startup and when needed) suffers a lot of "DBI lost connection" errors. The child processes do the same, but never produce the same error:

11-06-2003 13:31:13: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147. 11-06-2003 13:32:00: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147. 11-06-2003 13:32:52: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147. 11-06-2003 13:36:45: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147. 11-06-2003 13:41:15: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147. 11-06-2003 13:41:30: [ERROR=5] DBD::mysql::db do failed: Lost connecti +on to MySQL server during query at ... line 194. 11-06-2003 13:47:14: [ERROR=5] DBD::mysql::st execute failed: Lost con +nection to MySQL server during query at ... line 147.
Why is this happening only on the main Perl program and not in the child processes? They all use the same Database package. Can it have something to do with the fact this process forks of child processes and this causes the Database connection to be closed/lost?

Any input is highly appreciated.

TIA, Marcel

In reply to DBI lost connection errors by Marcello

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (7)
As of 2024-04-18 22:09 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found