ORA-29294 Raised When UTL_COMPRESS.LZ_UNCOMPRESS to decompress valid compressed data from a BLOB
Last updated on FEBRUARY 15, 2017
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 18.104.22.168 [Release 10.1 to 11.2]
PL/SQL - Version 10.1.0.2 to 22.214.171.124 [Release 10.1 to 11.2]
Information in this document applies to any platform.
I am running into an error when rusing utl_compress.lz_uncompress to read and decompress compressed XML data from a BLOB column.
- Read the LOB
- decompress it
- load it into an XML table -- without extracting the data to disk
Attempts to read and uncompress the compressed XML using utl_compress.lz_uncompress, as shown in the below code, generates an error (error message follows PL/SQL code) during the uncompress operation.
The data in the BLOB column is a valid compressed file.
I am able to:
1) extract the BLOB data through SQL Developer by double clicking on the (BLOB) column
selecting "Download" -- and uncompressing the saved file with any of 7-Zip, Winzip, or Windows based compressed folder,
2) extracting the BLOB data with a java program and saving it to disk, then uncompressing with the previously mentioned tools.
Is this Oracle proprietary or known problem?
No known change : the problem appears to be server neutral and has reproduced using 11.2.x on various servers
Here is the example showing the problem
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