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Full Discussion: Regarding Multi-Threading
Top Forums Programming Regarding Multi-Threading Post 78064 by mbb on Friday 15th of July 2005 05:31:03 AM
Old 07-15-2005
Some more info might help, like which database are you using? e.g. Informix, Oracle, SqlServer etc.

One thing is for sure - if you have a database table it will be quicker to load to if the table did not have any indicies. Usually it is better to drop the indicies, load, then re-create the indicies afterwards.

Other things to consider are referential integrity checks made by the database and constraint checks.

After such a large load, you may have to update statistical information on the table to allow the database optimizer to use the table in the optimal way e.g. 'update statistics for table' in Informix.

Disabling transaction logging on the table or database may increase the performance.

Also some database products have data loader applications to allow for high performance bulk loading of a database.

Ultimately, a large data file will take some time and you will always be bound by the performance of your physical devices.

Hope this helps

MBB
 

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DROP 
TABLE(7) SQL Commands DROP TABLE(7) NAME
DROP TABLE - remove a table SYNOPSIS
DROP TABLE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ] DESCRIPTION
DROP TABLE removes tables from the database. Only its owner can drop a table. To empty a table of rows without destroying the table, use DELETE [delete(7)] or TRUNCATE [truncate(7)]. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table. However, to drop a table that is referenced by a view or a foreign-key constraint of another table, CASCADE must be specified. (CASCADE will remove a dependent view entirely, but in the foreign-key case it will only remove the foreign-key constraint, not the other table entirely.) PARAMETERS
IF EXISTS Do not throw an error if the table does not exist. A notice is issued in this case. name The name (optionally schema-qualified) of the table to drop. CASCADE Automatically drop objects that depend on the table (such as views). RESTRICT Refuse to drop the table if any objects depend on it. This is the default. EXAMPLES
To destroy two tables, films and distributors: DROP TABLE films, distributors; COMPATIBILITY
This command conforms to the SQL standard, except that the standard only allows one table to be dropped per command, and apart from the IF EXISTS option, which is a PostgreSQL extension. SEE ALSO
ALTER TABLE [alter_table(7)], CREATE TABLE [create_table(7)] SQL - Language Statements 2010-05-14 DROP TABLE(7)
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