Monks, I can't say how frustrated I am. I spent nearly the whole day to get Oracle running, and migrating a table from Access to said database, because I ran into a "cannot open more tables" error in my application that uses the Template-Toolkit and it's DBI plugin.

I have a template that basically looks like 
[%
  USE oracleDB = DBI
  (
    "dbi:Oracle:SOMEDB", "someuser", "somepassword"
  )
-%]

<vdx_data>

[%- FOREACH kasse = oracleDB.query( 'SELECT DISTINCT foo, bar FROM myt
+able ORDER BY foo, bar' ) %]
  
  <vknr V="[% kasse.FOO %]">
      <zp_kv V="[% kasse.BAR %]"/>
  </vknr>
            
  <vorgang_liste>
  [%- FOREACH vorgang = oracleDB.query( "SELECT * FROM mytable WHERE F
+OO = $kasse.FOO AND BAR = $kasse.BAR" ) %]

    <vorgang>
        <vdx_abrechnungsbereich V="[% vorgang.ABC %]"/>
        <gkv_konto V="[% vorgang.DEF %]"/>
    </vorgang>

  [%- END %]
  </vorgang_liste>

[%- END %]
</vdx_data>

[download]
As you can see it first selects and groups some key fields from the table, outputs them and then makes a subquery for those keys and outputs more details for them in a inner loop. This runs smooth and very fast until Oracle reaches some kind of inner limit and chokes with an error: 
DBI error - DBI prepare failed: ORA-01000: maximum open cursors exceed
+ed (DBD ERROR: OCIStmtExecute/Describe)

[download]
(The actual error message in english may differ. I translated it from german.)

So how can I close/reuse a cursor? Is there another way to achieve this?

P.S. This example is simplified. In reality there are more than one inner loop and they are nested.


holli, /regexed monk/

In reply to Template::Plugin::DBI, Oracle and cursors by holli

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