Question

new_code

Asked by: sam15

What would be the best way to check if there was new code compiled into oracle database recently to troubleshoot issues that may be cause by it?

Would you select on user_objects to see and chec the created date?

would that include everything new that was introduced?

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Asked On
2009-11-04 at 13:10:20ID24872517
Tags

oracle

Topics

Oracle 9.x

,

Oracle 10.x

,

PL / SQL

Participating Experts
1
Points
500
Comments
5

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Answers

 

by: sdstuberPosted on 2009-11-04 at 13:20:26ID: 25744061

I would check dba_objects rather than user_objects

and I would look at last_ddl_time

 

by: sam15Posted on 2009-11-04 at 13:25:12ID: 25744106

but last_ddl_time is last time you compile the package.
If the app server automatically compiles on request it will update that.

 

by: sdstuberPosted on 2009-11-04 at 13:32:42ID: 25744172

you're right,  check TIMESTAMP then  it only changes when the object actually changes

 

by: sam15Posted on 2009-11-04 at 13:42:24ID: 25744272

what does timestamp tell you? Most of the time it is same as created.

Is that last time you changed the object.

would this view tell you triggers and indexes , etc.

 

by: sdstuberPosted on 2009-11-04 at 13:54:51ID: 25744384

database links only have created timestamps, last_ddl and timestamp will be null for those.

last_ddl_time will be updated whenever dll is executed (explicitly or implicitly)

timestamp will be updated if the object "specification" changes due to the ddl
informally, that means the timestamp changes only if the object "looks" different afterward.

so, truncate on a table will updated last_ddl_time but not timestamp because the table still "looks" the same

triggers may go invalid and get recompiled due to underlying packages changing and their last_ddl_time will update from implicit compilation as they are used, but unless you actually modify the  trigger the timestamp won't change

indexes will usually have timestamp and last_ddl_time in synch. most ddl will touch both; but monitoring usage only modifies last_ddl_time, there might be others but I can't think of them off hand,  also note, some ddl doesn't update either.  alter index ..... coalesce for instance, doesn't update last_ddl_time or timestamp


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