If you are querying databases that cannot process a series of SQL queries simultaneously, then formulate your queries as multiple queries. For example:
SQLStatement:
+insert into perf(testtime, tag) values (getdate(), '%tag%')
SQLStatement:
+SELECT au_lname, ytd_sales from pubs.dbo.titleview where ytd_sales>5000
SQLStatement:
+SELECT count(*) as nrecs from pubs.dbo.titleview where ytd_sales>5000
Batch queries are processed together at once, whereas multiple queries are processed one at a time. Therefore, you will get better performance by formatting your queries as a batch if your database can handle batch queries.