APEX 5.0. Report with image stored in a BLOB gives ORA-06502.

Hi,
I want to create an Interactive Report - Desktop with an image in which is stored in a BLOB but it returnes a: ORA-06502: PL/SQL: numeric or value error: character to number conversion error.
I have created a test report with only the image (billed - which is a BLOB) and an ID (the PK - a number from a sequence)
select ID, billed from foto
I have tried with and without a formatmask for the ID '999999999999999' and the Type as Plain text as there seems not to be a better choice..
For the 'billed' Type is 'Display Image' and the 'Table Name' and 'BLOB Column' are set. 'Primary Key Column 1' is set to ID. 'Mime Type Colomn' points to a field that contains 'image/jpeg' as the stored image is a photo in jpg.
The image displays OK from a Forms application.
DB is a 11.2.0.4 on Linux 6.6 and APEX is 5.0
What have I missed?
Thanks,
Dino

Dino Hustinx wrote:
I want to create an Interactive Report - Desktop with an image in which is stored in a BLOB but it returnes a: ORA-06502: PL/SQL: numeric or value error: character to number conversion error.
I have created a test report with only the image (billed - which is a BLOB) and an ID (the PK - a number from a sequence)
select ID, billed from foto
As described in the documentation, the report query must select the length of the BLOB column, not the column itself:
select id, dbms_lob.get_length(billed) billed from foto

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Stack Trace follows (Needed to trim due to size, trying to keep unique messges) *******
ERROR [pool-14-thread-1] c.u.p.e.g.c.GenerateCrystalReport [GenerateCrystalReport.java : 211] Generate Report: Template =
pusehk08\evm$\EVM REPORTS 5.7.2010\Staging\TEARDOWN_COM.rpt, ReportSDKException caught: javax/imageio/metadata/IIOMetadata.getAsTree(Ljava/lang/String;)Lorg/w3c/dom/Node;
com.crystaldecisions.sdk.occa.report.lib.ReportSDKException: javax/imageio/metadata/IIOMetadata.getAsTree(Ljava/lang/String;)Lorg/w3c/dom/Node;
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at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.export(SourceFile:147) [CrystalReportsRuntime.jar:12.2.207.916]
at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.export(SourceFile:128) [CrystalReportsRuntime.jar:12.2.207.916]
at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.export(SourceFile:111) [CrystalReportsRuntime.jar:12.2.207.916]
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at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:703) [na:1.5.0]
at java.lang.Thread.run(Thread.java:811) [na:1.5.0]
Caused by: java.lang.VerifyError: javax/imageio/metadata/IIOMetadata.getAsTree(Ljava/lang/String;)Lorg/w3c/dom/Node;
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at com.crystaldecisions.sdk.occa.report.application.ReportSource.a(SourceFile:1558) [CrystalReportsRuntime.jar:12.2.207.916]
at com.crystaldecisions.sdk.occa.report.application.ReportSource.a(SourceFile:337) [CrystalReportsRuntime.jar:12.2.207.916]
at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.if(SourceFile:223) [CrystalReportsRuntime.jar:12.2.207.916]
... 8 common frames omitted
2010-07-20 15:57:11,147 ERROR [pool-14-thread-1] c.u.p.e.g.ReportThread [ReportThread.java : 233] Attempt to generate report TEARDOWN using
pusehk08\evm$\EVM REPORTS 5.7.2010\Staging\TEARDOWN_COM.rpt for E733570-01 failed: Generate Report: Template =
pusehk08\evm$\EVM REPORTS 5.7.2010\Staging\TEARDOWN_COM.rpt, ReportSDKException caught: javax/imageio/metadata/IIOMetadata.getAsTree(Ljava/lang/String;)Lorg/w3c/dom/Node;, REPORTSDKEXCEPTION
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com.crystaldecisions.sdk.occa.report.lib.ReportSDKException: javax/imageio/metadata/IIOMetadata.getAsTree(Ljava/lang/String;)Lorg/w3c/dom/Node;
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