mifflin has asked for the wisdom of the Perl Monks concerning the following question:
I'm trying to implement a forking process with DBI and cannot get the database handle attribute InactiveDestroy to work. As you can see below, after I have reaped the child process with waitpid my database handle is not longer valid.
Im currently using DBI 1.39 and the docs on it say that this was fixed. See DBI 1.39.
I've even tried installing versions all the way up to the current 1.53 and I get the same problems.
What am I doing wrong?
Is it possible to do this without having to reconnect?
Here is the outputuse strict; use warnings; use DBI; use DBU; print "$$ started\n"; my $dbh = DBI->connect('DBI:Oracle:dev', 'xxx', 'yyy', {PrintError => +1}); my $depts_sql = <<EOT; select d.id deptid from codes c, dept d where c.id = ? and nvl(d.cdt,sysdate+1) > sysdate and c.cd = d.id EOT my $depts_csr = $dbh->prepare($depts_sql); deptid($depts_csr); my $pid = fork; print "$$ pid = $pid\n"; if (!defined $pid) { print "$$ fork error\n"; } elsif ($pid == 0) { print "$$ child\n"; $dbh->{InactiveDestroy} = 1; # do something here in the child process exit; } deptid($depts_csr); # this call will succeed because the child has not + been reaped yet waitpid $pid, 0; deptid($depts_csr); # this call will fail $dbh->disconnect; sub deptid { my ($csr) = @_; $csr->execute('WVPLPRT'); print "depts="; while (my ($deptid) = $csr->fetchrow_array) { print "$deptid,"; } print "\n"; }
# perl problem 21754 started depts=1,10,11,13,14,15,17,18,19,2,20,21,23,27,3,30,5,9, 21754 pid = 21757 21757 pid = 0 21757 child depts=1,10,11,13,14,15,17,18,19,2,20,21,23,27,3,30,5,9, DBD::Oracle::st execute failed: ORA-01001: invalid cursor (DBD: oexfet + error) at problem line 42. DBD::Oracle::st fetchrow_array failed: no statement executing (perhaps + you need to call execute first) at problem line 44. depts=
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Replies are listed 'Best First'. | |
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Re: DBI InactiveDestroy problem
by perrin (Chancellor) on Dec 02, 2006 at 17:38 UTC | |
by mifflin (Curate) on Dec 02, 2006 at 23:45 UTC | |
by perrin (Chancellor) on Dec 03, 2006 at 17:38 UTC | |
Re: DBI InactiveDestroy problem
by lbjay (Novice) on Dec 11, 2006 at 21:19 UTC | |
by mifflin (Curate) on Dec 14, 2006 at 01:59 UTC | |
Re: DBI InactiveDestroy problem
by etcshadow (Priest) on Jun 07, 2007 at 03:04 UTC |
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