今天在ERP系统的维护过程中，业务人员反馈了一个问题过来，是ERP系统生产单模块的预览打印报表出错，看到后我逐步做了以下的排查：
1、尝试其他单据是否存在相同问题
2、直接打开水晶报表，将参数代入看看是否是报表问题
排查之后逐渐发现，问题出在数据源身上，找到返回数据集的存储过程，进入测试窗口检查是否运行正常，结果发现运行即进入卡死状态，进程无法中断，只好强行退出PL/SQL，这时候我估计到问题出在SQL语句上，因此将SQL语句复制到新的窗口，代入参数，如下：
SELECT WO_NBR,WO_LOT,WO_TYPE,WO_TYPE2 ,WO_PART, WO_QTY_ORD,WO_QTY_COMP,WO_QTY_RJCT,WO_LINE,WO_ORD_DATE,WO_REL_DATE,WO_DUE_DATE,WO_STATUS,WO_CLOSE_BY,WO_CLOSE_DATE, WO_SO_NBR,WO_SO_LINE,WO_FGOV_PER,WO_VEND,WO_SEND,WO_SOFT,WO_SOFT_VER,WO_ECA_NBR,WO_ECA_VER,WO_COUNT_OUTPUT,WO_ECN_NBR ,WO_TYPE1, WO_SKDR_NBR, WO_MAN_HAUR, WO_LIST_UPDATED,WO_SCHEDULE_DATE, WO_STD_PL,WO_ADD_SPARE, WO_ADD_SCREEN,WO_COMMON_ONLY,WO_RMKS,cast(WO_OTHER_RMKS as varchar2(1024)) as WO_OTHER_RMKS,WO_SITE,WO_PROG_CODE, WO_DOC_CODE,WO_CRT_BY,WO_CRT_DATE,WO_MOD_TIMES,WO_MOD_BY,WO_MOD_DATE,WO_CHAR1,WO_CHAR2,WO_CHAR3,WO_CHAR4,WO_CHAR5, WO_CHAR6, WO_QTY1,WO_QTY2,WO_WF_STATUS WO_PST,WO_PST_BY,WO_PST_DATE,WO_SRC_NBR,WO_SRC_LINE,WO_SRC_LOT,WO_PT_LOT,WO_TRY_NBR, OEM_MSTR.*, OEMDO_LOGO_COUNT,OEMDO_MN_LOGO,OEMDO_DEF_LANG,OEMDO_S_LOGO, OEMDC_NBR,OEMDC_VERSION, OEMDC_NAME,OEMDC_EN_COMP,(OEMDC_EN_QTY_PER_M/OEMDC_EN_QTY_PER_D) AS OEMDC_EN_QTY_PER,OEMDC_PT_MSTR.PT_UM AS OEMDC_EN_COMP_UM, OEMDC_RMKS, WO_PT_MSTR.PT_DESC1 AS WO_PT_DESC1, WO_PT_MSTR.PT_DESC2 AS WO_PT_DESC2, WO_PT_MSTR.PT_DESC1 AS WO_PT_DESC, WO_PT_MSTR.PT_DRAW,WO_PT_MSTR.PT_CLASS AS WO_PT_CLASS,WO_PT_MSTR.PT_GROUP AS WO_PT_GROUP,WO_PT_MSTR.PT_MD AS PT_MD, SOFT_PT_MSTR.PT_DESC1 AS SOFT_PT_DESC1, SOFT_PT_MSTR.PT_DESC2 AS SOFT_PT_DESC2, SOFT_PT_MSTR.PT_DESC1 AS SOFT_PT_DESC, OEMDC_PT_MSTR.PT_DESC1 AS OEMDC_EN_COMP_DESC1,OEMDC_PT_MSTR.PT_DESC2 AS OEMDC_EN_COMP_DESC2,SOD_CMMT ,SO_CUST, SC4_MSTR.*, SOD_PART_QTY, SOD_SC_QTY,SC5_DESC,OEMDO_SFS_NBR,OEMDO_SFS_VERSION,A.GEND_NAME AS MB_DESC ,B.GEND_NAME AS INTERFACE_DESC,SOD_SFS_NBR,SOD_SFS_VERSION, SFS_S_LOGO,SFS_MN_LOGO,SFSD1_MN_LANG,wo_print_times, wo_try_nbr,try_task_no,try_content,try_aim FROM WO_MSTR JOIN PT_MSTR WO_PT_MSTR ON WO_PART = WO_PT_MSTR.PT_PART LEFT JOIN OEM_MSTR ON WO_ECA_NBR = OEM_NBR AND WO_ECA_VER = OEM_VERSION LEFT JOIN OEMDC_DET ON OEM_NBR = OEMDC_NBR AND OEM_VERSION = OEMDC_VERSION LEFT JOIN OEMDO_DET ON OEM_NBR = OEMDO_NBR AND OEM_VERSION = OEMDO_VERSION LEFT JOIN PT_MSTR OEMDC_PT_MSTR ON TRIM(OEMDC_EN_COMP) = TRIM(OEMDC_PT_MSTR.PT_PART) LEFT JOIN PT_MSTR SOFT_PT_MSTR ON TRIM(WO_SOFT) = SOFT_PT_MSTR.PT_PART LEFT JOIN GEND_DET A ON OEM_MB_PROJECT = A.GEND_OPTION AND A.GEND_GEN ='SBGD_SCHEME' LEFT JOIN GEND_DET B ON OEM_INTER_REQ = B.GEND_OPTION AND B.GEND_GEN ='INTERFACE_REQ' LEFT JOIN SOD_DET ON SOD_NBR = WO_SO_NBR AND SOD_LINE = WO_SO_LINE LEFT JOIN SO_MSTR ON SO_NBR = SOD_NBR LEFT JOIN SFS_MSTR ON SFS_NBR = SOD_SFS_NBR AND SFS_VERSION = SOD_SFS_VERSION LEFT JOIN SFSD1_DET ON SFSD1_NBR = SFS_NBR AND SFSD1_VERSION = SFS_VERSION AND SFSD1_DEF_LANG = 1 LEFT JOIN SC5_MSTR ON SC5_CODE = SOD_SC5 AND SC5_CURR = SO_CURR AND SOD_REQ_DATE BETWEEN SC5_START AND SC5_EXPIRE -- SC5_EXPIRE > TRUNC(SYSDATE, 'DD') LEFT JOIN SC4_MSTR ON SC4_CODE = SOD_SC4_CODE AND SC4_CURR = SO_CURR AND SOD_REQ_DATE BETWEEN SC4_START AND SC4_EXPIRE left join try_mstr on wo_try_nbr=try_nbr WHERE (WO_NBR = 'GWH17040102' ) AND (WO_LOT = ' ') AND (OEMDC_NAME IN (SELECT GEND_OPTION FROM GEND_DET WHERE GEND_GEN ='MT_COMP' AND (GEND_PROPERTY2 ='Y' OR GEND_PROPERTY2 ='Y')) OR ISEQUAL(OEMDC_NAME , '') = 1 )