Document database configuration parameters

Author: oranenj

README.md

@@ -270,60 +270,59 @@ NOTE: Atlassian only supports Oracle 11g/12g, even so this value should be as do
 
 Set the schema
 
-The Default value is 'public'
-
-##### `$poolsize`
-
-The connection pool size to the database, defaults to 20
+The default value is 'public' for PostgreSQL, and undef for others
 
 ##### `$dburl`
 
 This parameter is not required nor do we recommend setting it. However it can be
 used to customize the database connection string.
 
-##### `$pool_min_size`
+##### `$pool_max_size`
 
-defaults to 20
+Setting most of the advanced JDBC parameters is not required unless you want to tune JIRA
+settings.
 
-##### `$pool_max_size`
+defaults to undef
+
+##### `$pool_min_size`
 
-defaults to 20
+defaults to undef
 
 ##### `$pool_max_wait`
 
-defaults to 30000
+defaults to undef
 
 ##### `$validation_query`
 
 defaults to undef
 
 ##### `$min_evictable_idle_time`
 
-defaults to 60000
+defaults to undef
 
 ##### `$time_between_eviction_runs`
 
 defaults to undef
 
 ##### `$pool_max_idle`
 
-defaults to 20
+defaults to undef
 
 ##### `$pool_remove_abandoned`
 
-defaults to true
+defaults to undef
 
 ##### `$pool_remove_abandoned_timeout`
 
-defaults to 300
+defaults to undef
 
 ##### `$pool_test_while_idle`
 
-defaults to true
+defaults to undef
 
 ##### `$pool_test_on_borrow`
 
-defaults to false
+defaults to undef
 
 #### MySQL Java Connector parameters