You can attempt to activate your sim card in Qatar by doing any of the following:
Tweet to @talk2GLOBE to request GROAM activation.
Call +6327301212 and request for activation. Don't forget that charges will apply if the call is made while roaming
Please note that Qatar is considered a "Special Country".
Special countries only allow limited roaming periods. When you're in these countries, you can only use your roaming service for a maximum of 180 days. You can request for an extension after the 180-day period. If you wish to have it extended, you can only do so for up to 14 days.
For more you can check http://www.globe.com.ph/help/roaming/groam