diff --git a/hsarback/src/de/hsadmin/mods/db/PgSqlDatabaseProcessorFactory.java b/hsarback/src/de/hsadmin/mods/db/PgSqlDatabaseProcessorFactory.java
index 18e5a12..83fe7a8 100644
--- a/hsarback/src/de/hsadmin/mods/db/PgSqlDatabaseProcessorFactory.java
+++ b/hsarback/src/de/hsadmin/mods/db/PgSqlDatabaseProcessorFactory.java
@@ -45,6 +45,7 @@ public class PgSqlDatabaseProcessorFactory implements EntityProcessorFactory {
 		assert db.getInstance().equals("pgsql");
 		JDBCProcessor aJDBCP = createPostgreSqlAdminProcessor();
 		String aName = AbstractEntity.escapeString(db.getName());
+		aJDBCP.addSQL("SELECT pg_terminate_backend(procpid) FROM pg_stat_activity WHERE datname='" + aName + "'");
 		aJDBCP.addSQL("DROP DATABASE " + aName);
 		return aJDBCP;
 	}
diff --git a/hsarback/src/de/hsadmin/mods/db/PgSqlUserProcessorFactory.java b/hsarback/src/de/hsadmin/mods/db/PgSqlUserProcessorFactory.java
index 3c77888..27da80c 100644
--- a/hsarback/src/de/hsadmin/mods/db/PgSqlUserProcessorFactory.java
+++ b/hsarback/src/de/hsadmin/mods/db/PgSqlUserProcessorFactory.java
@@ -40,6 +40,7 @@ public class PgSqlUserProcessorFactory implements EntityProcessorFactory {
 		assert dbu.getInstance().equals("pgsql");
 		JDBCProcessor aJDBCP = PgSqlDatabaseProcessorFactory.createPostgreSqlAdminProcessor();
 		String aName = AbstractEntity.escapeString(dbu.getName());
+		aJDBCP.addSQL("SELECT pg_terminate_backend(procpid) FROM pg_stat_activity WHERE usename='" + aName + "'");
 		aJDBCP.addSQL("DROP USER " + aName);
 		return aJDBCP;
 	}