I have a java web application on a virtual host with Tomcat.
I do not want to set my embedded derby database's home by absolutely path. I
hope it can location in the web application's root directory.
But when I set the URL like this jdbc:derby:DBTest;create=true. The DBTest
database always
Daniel Noll wrote:
using prepared statement + batch will be your fastest approach even
tough you pass 1000 records per query derby has to still parse that
query whereas with prepared statements they are parsed once. and if
you are using batch all your data will be passed at once so derby
will
Got a reply from Kevin, which said that Hibernate had set the BLOB
column maximum size to 255 bytes. After this was fixed, inserting the
64k BLOB worked fine.
--
Kristian
Kristian Waagan wrote:
Kevin Wu wrote:
I use embedded derby as my database, but when I save a Blob to DB, it
throw the
ccl007 wrote:
you know in mysql ,we can use limit to query certain number of rows from a
table in database like select * from table1 limit 2,7; what kind of sql
language should i use in derby to perform the same kind of function in derby
I believe you have hit FAQ 5.2:
Kevin,
Before starting the database, set the value for derby.system.home. For
example:
System.setProperty(derby.system.home, /home/derby/); // Use absolute
path here.
When you run tomcat, the value for user.dir is set to Tomcat home.
This why if you do not specify absolute path the
I expected to be able to retrieve all 500 rows from the result set with
no exception. I am not experienced with the holdability attribute, but
as I understand it, it allows a result set in a connection to stay open
across commits, either explicit or implicit.
I have run the same test after
Hi
I am using Derby 10.2.2 and Eclipse 3.3.
I try to create a Database Profile (DTP) using the Apache Derby JDBC
Connection.
I use the Derby Client JDBC Driver, and I have specified the jars files
(derby.jar, derbyclient.jar, derbynet.jar, derbytools.jar)
The URL is
implicit commit. However, with holdability set to
HOLD_CURSORS_OVER_COMMIT, I no longer get an exception on calling next()
the first time, but rather get good data for 415 calls. On the 416th
call, I get an exception not that the result set is closed, but rather
than an underlying storage
Sedillo, Derek (Mission Systems) [EMAIL PROTECTED] writes:
Hello Daniel,
Thank you for sharing your finding. It is interesting to see that using
executeBatch was actually slower than executeUpdate.
Of these three approaches I find it hard to picture multiple inserts in
a single
be careful while using it it does not effect performence where as in
mysql and others it does derby will retrive all rows but return only
what you set through setMaxRows had a similar problem i was using
limit to get only a single row in mysql query returned instantly with
a single row
Sedillo, Derek (Mission Systems) [EMAIL PROTECTED] writes:
Dyre,
The goal is to find the most efficient/optimized way to insert large
amounts of data into Derby. For example in working as an Oracle DBA I
have discovered that I can bulk load data from ProC using an array of C
Structures in
Hi, Luigi. I looked at this once, and it really didn't seem that the
API provided by the JWS persistence service was sufficient for the needs
of Derby. But I didn't look too closely at it. For me demo needs, a
popup was fine.
What you'd have to do is provide a new implementation of the
Sedillo, Derek (Mission Systems) wrote:
Dyre,
The goal is to find the most efficient/optimized way to insert large
amounts of data into Derby. For example in working as an Oracle DBA I
have discovered that I can bulk load data from ProC using an array of C
Structures in one insert statement
Dyre,
I apologize for the confussion. I wasn't quite sure what Daniel meant
with regards to:
All in one transaction using executeUpdate():
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On 3/16/07, David Van Couvering [EMAIL PROTECTED] wrote:
Hi, Luigi. I looked at this once, and it really didn't seem that the
API provided by the JWS persistence service was sufficient for the needs
of Derby. But I didn't look too closely at it. For me demo needs, a
popup was fine.
What
rjain wrote:
Hi
I am using Derby 10.2.2 and Eclipse 3.3.
I try to create a Database Profile (DTP) using the Apache Derby JDBC
Connection.
I use the Derby Client JDBC Driver, and I have specified the jars files
(derby.jar, derbyclient.jar, derbynet.jar, derbytools.jar)
The URL is
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