After Enabling OBIEE 11g Usage Tracking, NQServer.log Shows Error: "ORA-24801: illegal parameter value in OCI lob function at OCI call OCILobWrite2"

(Doc ID 1514176.1)

Last updated on DECEMBER 18, 2012

Applies to:

Business Intelligence Suite Enterprise Edition - Version 11.1.1.6.0 to 11.1.1.6.5 [Release 11g]
Oracle Exalytics Software - Version 1.0.0.1.0 to 1.0.0.1.0 [Release 1.0]
Information in this document applies to any platform.

Symptoms

Started seeing errors in the NQServer.log after enabling Usage Tracking in Oracle Business Intelligence Enterprise Edition (OBIEE) 11.1.1.6.5 on an Oracle Exalytics 1.0.0.1.0 system.

The error is:

[nQSError: 17001] Oracle Error code: 24801, message: ORA-24801: illegal parameter value in OCI lob function  at OCI call OCILobWrite2

 When inspecting the log file, the error seems to occur immediately after a query that includes "SKIP_PHYSICAL_QUERY_EXEC=1."
 For example:

set variable LOGLEVEL=7, SKIP_PHYSICAL_QUERY_EXEC=1:
select
"Dim - Cost Center"."Cost Center Number",
"Dim - GL Account"."Group Account Number",
"Fact - Fins - GL Other Posted Transaction"."Cost of Goods Sold" from SA;

Cause

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