SQL0901 - SQL system error

Problem

Error [81][IBM][Client Access ODBC Driver (32-bit)][DB2/400 SQL]SQL0901 - SQL system error When running a query containing a SELECT DISTINCT. This is from an excerpt from an ODBCSpy trace file: SQLExecDirect 0x01010001 [64]select distinct T257."ACCT_ID" "c1" from "QCIMPROM"."ACCT" T257 SQL_NTS SQL_ERROR SQLError NULL NULL 0x01010001 [5]S100 901 [81][IBM][Client Access ODBC Driver (32-bit)][DB2/400 SQL]SQL0901 - SQL system error. 512 81 SQL_SUCCESS This is an example of a job log generated with the error message. Job 009789/QUSER/QZDASOINIT started on 02/01/99 at 14:46:29 in subsystem QSERVER in QSYS. Job entered system on 02/01/99 at 14:46:29. ACGDTA for 009789/QUSER/QZDASOINIT not journaled; reason 1. Servicing user profile QCIMPROM. Pointer not set for location referenced. Function check. MCH3601 unmonitored by QQQVAP at statement *N, instruction X'0ABB'. Internal failure occurred in query processor. Dump output directed to spooled file 2. Function check. CPF4204 unmonitored by QQQQUERY at statement *N, instruction X'23D6'. SQL system error. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. Data mapping error on member ABC_C00001. DB2/400 V4R3M0 (with all of the PTFs on the cumulative tape for C8349430, as well as SF52733) Client Access V3R2M0 (with client patches Sf51617 and Sf53300 applied)are being used.