diff --git a/ODBCSetup.labnotes b/ODBCSetup.labnotes
new file mode 100644
index 0000000000000000000000000000000000000000..27d7f7e92e45a53e0431e15bcff34d4c8962e61e
--- /dev/null
+++ b/ODBCSetup.labnotes
@@ -0,0 +1,163 @@
+-- MonetDB --
+
+Install ODBC client: sudo apt-get install libmonetdb-client-odbc (or --enable-odbc)
+
+odbcinst.ini
+
+[MonetDB]
+Description     = MonetDB Driver
+Driver          = /usr/lib/libMonetODBC.so
+Setup           = /usr/lib/libMonetODBCs.so
+
+odbcinst -i -d -f odbcinst.ini
+
+odbc.ini
+
+[MonetDB]
+Description         = Connection for MonetDB
+Driver              = MonetDB
+Database            = database
+Servername          = localhost
+User	            = monetdb
+Password            = monetdb
+Port                = 50000
+
+odbcinst -i -s -f odbc.ini
+
+isql MonetDB
+
+
+-- Postgres --
+sudo apt-get install odbc-postgresql
+
+odbcinst.ini
+
+[PostgreSQL]
+Description     = PostgreSQL Driver
+Driver          = /usr/lib/x86_64-linux-gnu/odbc/psqlodbca.so
+Setup           = /usr/lib/x86_64-linux-gnu/odbc/libodbcpsqlS.so
+
+odbc.ini
+
+[PostgreSQL]
+Description         = Connection for PostgreSQL
+Driver              = PostgreSQL
+Database            = user
+Servername          = localhost
+User	            = user
+Password            = user
+Port                = 5432
+
+
+-- MySQL --
+MySQL ODBC Connector: https://dev.mysql.com/downloads/connector/odbc/2.50.html
+
+
+odbcinst.ini
+
+[MySQL]
+Description     = MySQL Driver
+Driver          = /home/user/odbc/mysql-odbc/lib/libmyodbc5a.so
+Setup           = /home/user/odbc/mysql-odbc/lib/libmyodbc5S.so
+
+odbc.ini
+
+[MySQL]
+Driver              = MySQL
+Description         = Connection for MySQL
+Database            = user
+Server              = 127.0.0.1
+User                = user
+Uid                 = user
+Password            =
+Port                = 3306
+
+
+
+-- DB2 --
+{{sqllib/cfg/db2cli.ini}}
+[DB2_SAMPLE]
+Database = DB
+Protocol=TCPIP
+Port=50000
+Hostname=localhost
+UID=user
+PWD=user
+
+odbcinst.ini
+
+[DB2]
+Description             = IBM DB2 Adapter
+Driver                  = /home/user/sqllib/lib/libdb2.so
+FileUsage               = 1
+DontDLClose             = 1
+
+odbc.ini
+
+[DB2_SAMPLE]
+Description     = Connection for DB2
+Driver      	= DB2
+
+export DB2INSTANCE=user
+isql DB2_SAMPLE -d, user user
+
+-- Oracle -- 
+
+export ORACLE_SID=XE
+export TWO_TASK=$ORACLE_SID
+export TNS_ADMIN=/home/user/odbc/tnsnames.ora
+export ORACLE_BASE=/usr/lib/oracle
+export ORACLE_HOME=/usr/lib/oracle/12.1/client64
+
+-- tnsnames.ora -- (HAS TO BE IN: $ORACLE_HOME/network/admin/tnsnames.ora)
+XE2 =
+     (DESCRIPTION =
+     (ADDRESS= (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT=49161))
+     (CONNECT_DATA =
+     (SERVER = DEDICATED)
+     (SERVICE_NAME = XE)
+     )
+)
+
+
+[Oracle]
+Description     = Oracle ODBC driver for Oracle 12c
+Driver          = /usr/lib/oracle/12.1/client64/lib/libsqora.so.12.1
+Setup           = /usr/lib/x86_64-linux-gnu/odbc/liboraodbcS.so
+FileUsage       =
+CPTimeout       =
+CPReuse         =
+
+[Oracle]
+Application Attributes = T
+Attributes = W
+BatchAutocommitMode = IfAllSuccessful
+CloseCursor = F
+DisableDPM = F
+DisableMTS = T
+Driver = Oracle
+EXECSchemaOpt =
+EXECSyntax = T
+Failover = T
+FailoverDelay = 10
+FailoverRetryCount = 10
+FetchBufferSize = 64000
+ForceWCHAR = F
+Lobs = T
+Longs = T
+MetadataIdDefault = F
+QueryTimeout = T
+ResultSets = T
+ServerName = //127.0.0.1:49161/XE
+SQLGetData extensions = F
+Translation DLL =
+Translation Option = 0
+User = system
+Uid = system
+UserID = system
+Password = oracle
+
+sudo odbcinst -i -d -f odbcinst.ini && odbcinst -i -s -f odbc.ini
+
+echo "SELECT * FROM lineitem LIMIT 100" | isql MySQL -d, > /dev/null
+
diff --git a/pmodbc.c b/pmodbc.c
index fa1abbf787cc33484ce9f3d5a2271ce3b17daa44..caf0bbd9d292e9bded9f96da81306988a1d0ca44 100644
--- a/pmodbc.c
+++ b/pmodbc.c
@@ -7,6 +7,7 @@
 #include <assert.h>
 
 // compilation: gcc -g pmodbc.c -lodbc -o pmodbc
+// opt: gcc -O3 pmodbc.c -lodbc -o pmodbc
 
 static void list_drivers();
 static void query_db(char* dsn, char* query, int csv);
@@ -105,8 +106,6 @@ static void query_db(char* dsn_str, char* query, int csv) {
             puts(csvbuf);
         }
     }
-    extract_error("SQLStmt for dbc", stmt, SQL_HANDLE_STMT);
-    exit(1);
 }
 
 void extract_error(char *fn, SQLHANDLE handle, SQLSMALLINT type)