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Table Locking in Insert Command.

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Old 05-13-2013
Table Locking in Insert Command.
Hi,

i have a java based tool which does insert operation in a TABLE, and in parallel the same table is used by my C++ code which does select Query.

the Table will be always busy, but sometimes the table is getting locked when i try to make an insert, am bit confused whether the lock is because of SELECT query from my C++ code or by the INSERT QUERY from the java Tool.

Do i need to modify the Query if so how..? and from the google i learnt that select puts an internal LOCK.

currently am locking the table before insert below is my query

lock table table_name in exclusive mode nowait

and giving a commit after performing the DML operation so that lock will be removed automatically.

can anyone please solve my query.?

thanks,
senthil
Last edited by Scott; 05-13-2013 at 11:39 AM.. Reason: Crosspost. Closed
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LEARN ABOUT MOJAVE

dbix::class::resultsourceproxy::table

DBIx::Class::ResultSourceProxy::Table(3)		User Contributed Perl Documentation		  DBIx::Class::ResultSourceProxy::Table(3)

NAME

       DBIx::Class::ResultSourceProxy::Table - provides a classdata table object and method proxies

SYNOPSIS

	 __PACKAGE__->table('cd');
	 __PACKAGE__->add_columns(qw/cdid artist title year/);
	 __PACKAGE__->set_primary_key('cdid');

METHODS

   add_columns
	 __PACKAGE__->add_columns(qw/cdid artist title year/);

       Adds columns to the current class and creates accessors for them.

   table
	 __PACKAGE__->table('tbl_name');

       Gets or sets the table name.

   table_class
	 __PACKAGE__->table_class('DBIx::Class::ResultSource::Table');

       Gets or sets the table class used for construction and validation.

   has_column
	 if ($obj->has_column($col)) { ... }

       Returns 1 if the class has a column of this name, 0 otherwise.

   column_info
	 my $info = $obj->column_info($col);

       Returns the column metadata hashref for a column. For a description of the various types of column data in this hashref, see "add_column"
       in DBIx::Class::ResultSource

   columns
	 my @column_names = $obj->columns;

AUTHOR AND CONTRIBUTORS

       See AUTHOR and CONTRIBUTORS in DBIx::Class

LICENSE

       You may distribute this code under the same terms as Perl itself.

perl v5.18.2							    2013-12-16				  DBIx::Class::ResultSourceProxy::Table(3)