Subject "object %o is in use"-Error because of CacheStatementHandles (firebird 2.0.1)
Author Andreas Filsinger
(IBO 4.7.16)

Hi Helen,
Hi Jason,
Dear Group,

I never came in contact with the property "CacheStatementHandles" of
the IB_Connection-Object before - today i did. By migrating to
firebird 2.0.1 there came up an error wich never was seen in
firebird<=1.5.

Here is what i do:

: create table CLUB$2101 (RID DOM_REFERENCE NOT NULL)
: alter table CLUB$2101 add constraint PK_CLUB$2101 primary key (RID)
<# some IBO-Schema Caching Code here #>
: INSERT INTO CLUB$2101 ( RID) VALUES (7304393)
: select AUFTRAG.RID from AUFTRAG join CLUB$2101 on
(CLUB$2101.RID=AUFTRAG.RID) where (NUMMER is null)
ORDER BY STRASSE ASC
, ZAEHLER_NUMMER ASC
, ART ASC
<# some IBO-Schema Caching Code here #>
: drop table CLUB$2101

with IB_Connection. ...

CacheStatementHandles=false

-> all works fine. Here is the log:
http://orgamon.com/SQL.log.CacheStatementHandles_false.txt

CacheStatementHandles=true [default of IBO]

-> the last "drop" Statement fails because it uses the same statement-
Handle as the "Schema Caching Code" OR the "Schema Caching Code" is
NOT closed completely. The Error Msg from firebird is OK, beause
CLUB$2101 is a living member of the not fully closed Schema-Query
before the drop.

-----------------------------------

# can somebody tell me the meaning of the Handles-Cache? How do it
helps, is it about performace or something?
# how can i release the schema-cache, so before any "drop" i can
clear the cache, or any suggestions for a better fix.

Thanks for your work!
Andreas