Postgres db_lock_table behavior

Hello:

I'm read the Drupal API.
The function db_lock_table have this description:

"Lock a table. This function automatically starts a transaction"

And the MySQL code is:

"db_query('BEGIN; LOCK TABLE {'. db_escape_table($table) .'} IN EXCLUSIVE MODE'); "

What happend if I use this function with Postgres?
It's starts a transaction?
And the db_unlock_tables commits a transaction?
How I can rollback a transaction?

Thank's for your answer.

Fatal error: Allowed memory size of xxxxxxxx

A day after I installed drupal and openpublic i started getting the error below:

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 23360497 bytes) in /home/msbonlin/public_html/profiles/openpublic/modules/contrib/features/features.export.inc on line 577

user settings for own module - is there a "drupal way"

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Is there a drupal way for taking user settings per module ? for example i want to save
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A little link or so would be great !

Need to add virtual styler to my fashion site

Hi there,

Anyone have reference like virtual dressing room? I'm working on a fashion web shop and the client wants to enhance user functionality.

Any help will be appreciated.. :)

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