oracle朋友们！
今天，我发现我的RLS工作不正常..
我有一个观点 - HR_V_EMPLOYEE_ALPHABET。
在这个视图中，我有带谓词的RLS策略函数
NUMDEPTID具有不同的长度，具体取决于oracle用户，它在HR_V_EMPLOYEE_ALPHABET视图上执行查询。
我有一个用户，他对此观点有很长的预测：
NUMDEPTID IN (17923354,3412,20680619,3455,25203933,3470,3487,3487,18903226,3520,17923246,3564,17923436,732603,3409,16404471,3556,17458291,17458301,17458301,17862534,17862534,6296438,17862616,17923013,17923013,3401,17949231,3423,17975096,17975101,17975101,18197184,18197184,18903152,18903152,3490,20308150)
长度为290个符号（我使用1个字节的字符集，因此这个谓词的长度为290个字节）。
我发现，该用户未在视图中看到某些数据。我已经完成了实验并将我的谓词从NUMBER数据类型转换为VARCHAR2数据类型：
NUMDEPTID IN ('17923354','3412','20680619','3455','25203933','3470','3487','3487','18903226','3520','17923246','3564','17923436','732603','3409','16404471','3556','17458291','17458301','17458301','17862534','17862534','6296438','17862616','17923013','17923013','3401','17949231','3423','17975096','17975101','17975101','18197184','18197184','18903152','18903152','3490','20308150')
我运行一个查询：
SELECT* FROM HR_V_EMPLOYEE_ALPHABET;
哎哟，我收到错误ORA-28113（政策谓词有错误）。
我看到了一个跟踪文件，发现了以下内容：
*** 2014-08-08 17:09:55.762
-------------------------------------------------------------
Error information for ORA-28113:
Logon user : GULKINA_IF
Table/View : APPROOT.HR_V_EMPLOYEE_ALPHABET
Policy name : RLS_HRWATCHER_HR_V_EMP_ALPHAB
Policy function: CONTEXT_OWNER.PKG_HRWATCHER_SEC_FUNC.F_HRWATCHER_RLS
RLS view :
SELECT "ID","EMPLOYEEID","CITEZENID","ALPATATUS","ARCHIVEDATE","DESCR","DESCR2","OLD_DCODE","OLD_TABNUMB","OLD_PROD","STRUCTUREID","STATUSID","INDATE","DCODE","CONDCODE","DNAME","TABNUMB","LASTNAME","NAME","FATHERSHIP","JOBTITLE","JOBTITLE_FULL","JOBTITL_CUT","CATEGORYNUMB","CATEGCODE","WORKCODE","WORKTYPE","INN","INSURANCE","SALARY_HOUR","QUAL_NUMB","SALARY_MONTH","DISMISSDATE","SALARY_CODE","ADDITIONHARM","ADDITIONSECRET","ADDITIONOTHER","EXPA_ALL","EXPA_LOCAL","EXPA_DEPT","POL","BIRTHDATE","BRIGADE","D_GROUP","OLD_TAB","GEN_UNIT","NUMDEPTID","FINDATE","BIRTH_HOLIDAY","CHILD_HOLIDAY","CHANGESTATUSDATE","WORKGRAFF","ORDERBILL","INSTATE","DEPTID","OLDDCODE","GRAFID","SCHEDULENAME","OUTDATE" FROM "APPROOT"."HR_V_EMPLOYEE_ALPHABET" "HR_V_EMPLOYEE_ALPHABET" WHERE (NUMDEPTID IN ('17923354','3412','20680619','3455','25203933','3470','3487','3487','18903226','3520','17923246','3564','17923436','732603','3409','16404471','3556','17458291','17458301','17458301','17862534','17862534','6296438','17862616','17923013','17923013','3401','1))
ORA-01756: quoted string not properly terminated
所以，Oracle修剪谓词。 我发现，oracle对256字节的替换变量值有限制。
http://docs.oracle.com/cd/E12825_01/epm.111/esb_dbag/frameset.htm?limits.htm
嗯，我不确定，我的问题确实有这个原因.. 如何为我的RLS谓词增加oracle替换变量值长度？有可能吗？最好的问候，谢尔盖