PreparedStatements ArrayIndexOutOfBoundsException

Question

We are running our application on a WebLogic 5.1(sp 9)server using JDK
1.2.2 on an HP Unix box. We use a weblogic.jdbc.oci.Driver to access
an Oracle 8.1.5 database. The issue we have is with creating a
dynamic prepared statement. The prepared statement is a select
statement generated from a selection of account numbers on a web page.
First the prepared statement is dynamically built based on the number
of account numbers selected. For example, 'Select * from tablename
where accountnbr IN (?,?,?.......)'. In a while loop, a '?' is added
for each accountnbr selected. Next, in another while loop, a
variable is bound to each parameter by using a while loop (ie:
ps.setString(i++, accountnbrArray). The prepared statement is then
executed. This works fine so long as there is under 512 accounts
selected. However, once 512 or more accounts are selected, we get an
error. While looping through and binding the variables using the
setString method, the application throws an
ArrayIndexOutOfBoundsException in this method on the 512th parameter
every time. Can anyone help me out with what/why this is happening?
Thanks for your help.

Answer 1

Hi Don,
Could you post a stacktrace of the exception you're getting?
FYI, SP9 had a problem with PreparedStatement cache, so you
may want to try turning it off by putting STATEMENT_CACHE=0
in the connection pool properties.
Regards,
Slava Imeshev
"Don" <[email protected]> wrote in message
news:[email protected]..
We are running our application on a WebLogic 5.1(sp 9)server using JDK
1.2.2 on an HP Unix box. We use a weblogic.jdbc.oci.Driver to access
an Oracle 8.1.5 database. The issue we have is with creating a
dynamic prepared statement. The prepared statement is a select
statement generated from a selection of account numbers on a web page.
First the prepared statement is dynamically built based on the number
of account numbers selected. For example, 'Select * from tablename
where accountnbr IN (?,?,?.......)'. In a while loop, a '?' is added
for each accountnbr selected. Next, in another while loop, a
variable is bound to each parameter by using a while loop (ie:
ps.setString(i++, accountnbrArray). The prepared statement is then
executed. This works fine so long as there is under 512 accounts
selected. However, once 512 or more accounts are selected, we get an
error. While looping through and binding the variables using the
setString method, the application throws an
ArrayIndexOutOfBoundsException in this method on the 512th parameter
every time. Can anyone help me out with what/why this is happening?
Thanks for your help.