The biggest misconception with solar covers or rings is that they are meant to heat the pool. While these products may raise the pool temperature, they do so by reducing heat loss (mainly at night). Solar blankets should not be left on a pool during daylight hours, and at the very least, they should be removed for a 4-8 hours during the day for the pool to breathe.
ALTER DATABASE ... SET autocommit = 1 causes an implicit commit if the value was 0. All these statements cause an implicit commit before execution. This means that, even if the statement fails with an error, the transaction is committed. Some of them, like CREATE TABLE ... SELECT, also cause a commit immediatly after execution.
1. then you'll have to specify the date format mask in your select statement. Something like select to_char(datetime,'dd-mm-yyyy hh24:mi:ss') datetime from workon. â Rob van Wijk Sep 25 '11 at 6:53. This 'alter session' command is a godsend (I'm a complete Oracle newb).Thanks Rob. â Vinny Roe Nov 1 '12 at 14:16.ou are doing everything right by using a to_date function and specifying the time. The time is there in the database. The trouble is just that when you select a column of DATE datatype from the database, the default format mask doesn't show the time.