What are the GOV Limits in the Salesforce.com?
Salesforce provides a multitenant environment for running the Apex coding, so the runtime of Apex engine strictly enforces a number of limits for ensuring the runaway scripts and scripts don’t monopolize shared resources.
|Total number of SOQL's||20||100||100|
|Total number of SOQL's||0||20||20|
|Total number of records Retrieved by single SOQL Query||1000||10000||500|
|Total number of records Retrieved by single SOSL Query||0||200||200|
|Total Number Of Call out Methods||10||10||10|
|Total number of send email methods allowed||10||10||10|
|Total Heap Size 300000 Bytes 3MB||300000 Bytes||3 MB||1.5 MB|
the Governor limits can be enlarged from release to release.
And if scripts exceeds over limit then the associated governor issues a runtime exception that cannot be handled.