You can easily Download Oracle Enterprise Packs from this link :
Donwload link :
If your want to show time with date in your sql environment like, working with Sql Developer or Sql Plus or iSql Plus then change the value of NLS_DATE_FORMAT.
To change the value log in the sql environment and write:
alter session set NLS_DATE_FORMAT =’DD-MON-RRRR HH:MI:SS AM’;
then check the value…you are done..!!!

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Note : Please not do make backups before using these queries and also confirm them yourself or by aother means as
well.
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If you want to show or if you need the month first day, last time I check there was no built-in function in Oracle. But you can get it easily by using some other single-row date function. Here bellow an example of this.
SELECT LAST_DAY(ADD_MONTHS(SYSDATE,-1))+1
FROM DUAL;
Run the above sql and you will get the first day of current month.
For last day of current month just use the LAST_DAY function like this LAST_DAY(SYSDATE)
Need more help ? Just Leave you comments…
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Note : Please not do make backups before using these queries and also confirm them yourself or by aother means as
well.
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