Oracle and more – Amardeep Sidhu

Since long time i have almost been writing useless posts only. Now, i guess my blog doesn’t even look like an Oracle blog. So thought about posting something related to Oracle

Day before yesterday a colleague at my workplace asked that she was running an SQL script (which contained a simple DBMS_MVIEW.REFRESH() statement to refresh an MVIEW), it ran successfully but after completion re-ran the last command run in the session. I was also puzzled and checked the SQL script but it contained simple DBMS_MVIEW.REFRESH() statement. Next try revealed that the script actually had a / (slash) in the second line (with no semi-colon at the end of the first line). Something like this (I used dbms_stats instead of dbms_mview):

exec dbms_stats.gather_table_stats(user,'EMP')
/

Now this thing, when run in SQL* Plus session can be confusing:

SCOTT@TESTING >
SCOTT@TESTING >delete emp1;
delete emp1
*
ERROR at line 1:
ORA-00942: table or view does not exist

SCOTT@TESTING >@c:\test

PL/SQL procedure successfully completed.

delete emp1
*
ERROR at line 1:
ORA-00942: table or view does not exist

SCOTT@TESTING >

There is no semicolon at the end of the first statement but it executes without that also. So the slash in the 2nd line simply re-executes the last SQL, as expected . But it does get confusing !