ORA-02019 错误处理

ORA-02019 错误提示是未找到远程数据库的连接说明，通常发生在本地数据库无法连接到远程数据库。引发该问题的原因很多，比如网络连接，连接方式(tnsnames)，dblinkc的创建等等。而下面的描述的故障则比较奇特。

一、错误现象

SQL> select * from [email protected];                                          select * from [email protected]                                                ORA-02019: 未找到远程数据库的连接说明                                             SQL> select * from [email protected];                                             select * from [email protected]                                                   ORA-02019: 未找到远程数据库的连接说明

二、分析与解决
1.当前数据库版本

SQL> select * from v$version;                                                                                                     BANNER                                                           ---------------------------------------------------------------- Oracle8i Enterprise Edition Release 8.1.7.4.1 - Production       PL/SQL Release 8.1.7.4.0 - Production                            CORE 8.1.7.2.1 Production                                       TNS for 32-bit Windows: Version 8.1.7.4.0 - Production           NLSRTL Version 3.4.1.0.0 - Production

2.当前已创建的database link

SQL> select * from dba_db_links;                                                                                                                                                                                                        OWNER                          DB_LINK    USERNAME   HOST            CREATED                                        ------------------------------ ---------- ---------- --------------- -----------                                    DIMS                           DSS.M85    VIEWPIC    PIC             2007-11-8 1                                                                                                                                                        SQL> select * from v$dblink;   -->当前没有正在使用的database link                                                                                                                                                                       DB_LINK      OWNER_ID LOGGED_ON HETEROGENEOUS PROTOCOL OPEN_CURSORS IN_TRANSACTION UPDATE_SENT COMMIT_POINT_STRENGTH---------- ---------- --------- ------------- -------- ------------ -------------- ----------- ---------------------

3.下面的存储过程使用了分布式数据库

SQL> select text from dba_source where name='P_PROCESS_PIC_VALID';                                                                                                                                            TEXT                                                                                                   --------------------------------------------------------------------------------                       PROCEDURE "P_PROCESS_PIC_VALID"                                                                               (processDate IN DATE --处理日期，如果不传入，就表示当天                                                ) AS                                                                                                   recCount INT;                                                                                          pictureName NVARCHAR2(50);                                                                             mntnOperMask VARCHAR2(10);     --维护部操作人员账号前缀                                                oper        NVARCHAR2(50);                                                                             PicId  NVARCHAR2(50);                                                                                  FilmId NVARCHAR2(50);                                                                                  v_maxid      number;       --20100720                                                           BEGIN                                                                                                      -------------------------------------------------20100720                                              -- 已导入的数据最大的ID                                                                                select max(id) into v_maxid from T_scanfilename_m85;                                                   -- 导入新增的数据                                                                                      execute immediate 'insert into T_scanfilename_m85                                                                        select * from [email protected]                                                                                                                                                      TEXT                                                                                                   --------------------------------------------------------------------------------                                             where id>:COL_1'                                                                     using v_maxid;                                                                                         commit;                                                                                                -------------------------------------------------20100720                                              mntnOperMask := 'gl';                                                                                   --从图系统导入有效片数据                                                                               INSERT INTO t_pic_xdoc_file(cph,cl,wldd,fx,wlrq,wlxm,lrsj,oper,picture_name                              SELECT T1.cph,T1.cl,T1.wldd,T1.fx,T1.wlrq,T1.wlxm,T1.lrsj,T1.oper,T2.FILE                                /*FROM [email protected] T1,[email protected] T2*/ --20100720                                       FROM [email protected] T1,T_scanfilename_m85 T2                                                        WHERE T1.XH=T2.XH                                                                                          and t2.id>15717858                                                                                     and not exists (select picture_name from t_pic_xdoc_file where pict                                    AND substr(T1.oper,1,2)= mntnOperMask                                                                  and (t1.lrsj >=sysdate-3);                                                                     -- 将图文系统过来的有效片数据，分析处理后保存到统计表中                                                --处理有效片                                                                                           FOR c IN(SELECT xf.*,ROWID FROM t_pic_xdoc_file xf WHERE status=1)                                     LOOP                                                                                                                                                                                                     SQL> select table_name,owner from dba_tables where table_name in ('SCANFILENAME','XDOC_FILE');                                                                                                                TABLE_NAME                     OWNER                                                                   ------------------------------ ------------------------------                                          SCANFILENAME                   DIMS                                                                                                                                                                           SQL> select * from dims.scanfilename where rownum<5;                                                                                                                                                                                               ID FILENAME                                           XH          --------------------------------------- -------------------------------------------------- ------------                                8606178 V1_00000020361002320070614095523017900004.jpg                                                  8605441 V1_00000002101002120070614095523011900023.jpg                                                  8605445 V1_00000002101002120070614095523011900025.jpg                                                  8605449 V1_00000002101002120070614095523011900027.jpg

4.尝试执行操作

SQL> select * from [email protected];                                                                                                                                                  select * from [email protected]                                                                                                                                                        ORA-02019: 未找到远程数据库的连接说明                                                                                                                                                     SQL> select * from [email protected];                                                                                                                                                     select * from [email protected]                                                                                                                                                           ORA-02019: 未找到远程数据库的连接说明                                                                                                                                                     SQL> show user;                                                                              User is "SYS"                                                                                                                                                                             SQL> conn dims/dims_12345@dmsdb                                                              Connected to Oracle8i Enterprise Edition Release 8.1.7.4.1                                   Connected as dims                                                                                                                                                                         SQL> select * from dba_db_links;                                                                                                                                                          OWNER           DB_LINK         USERNAME        HOST            CREATED                      --------------- --------------- --------------- --------------- -----------                  DIMS            DSS.M85         VIEWPIC         PIC             2007-11-8 1                                                                                                               SQL> select * from user_db_links;                                                                                                                                                         DB_LINK         USERNAME        PASSWORD                       HOST            CREATED       --------------- --------------- ------------------------------ --------------- -----------   DSS.M85         VIEWPIC         VIEWPIC                        PIC             2007-11-8 1

5.切换帐户后使用分布式数据库，提示监听不可用

SQL> select * from [email protected]                                                                                                              ORA-12514: TNS: 监听进程不能解析在连接描述符中给出的 SERVICE_NAME                                                                                 SQL> select * from [email protected];                                                                                                          select * from [email protected]                                                                                                                ORA-12514: TNS: 监听进程不能解析在连接描述符中给出的 SERVICE_NAME                                                                                 pic =                                                                      (DESCRIPTION =                                                             (ADDRESS_LIST =                                                            (ADDRESS = (PROTOCOL = TCP)(HOST = 100.100.1.31)(PORT = 1521))         )                                                                        (CONNECT_DATA =                                                            (SERVER = DEDICATED)                                                     (SERVICE_NAME = DSS)                                                   )                                                                      )

6.使用tnsping测试

C:\>tnsping pic                                                                                                                                                       TNS Ping Utility for 32-bit Windows: Version 8.1.7.4.0 - Production on 26-7月 -2   011 15:32:35                                                                       (c) Copyright 1997 Oracle Corporation.  All rights reserved.                       Attempting to contact (ADDRESS=(PROTOCOL=TCP)(HOST=100.100.1.31)(PORT=1521))       OK（20毫秒）                                                                                                                                                          C:\>sqlplus viewpic/viewpic@pic    -->sqlplus 不能登陆                                                                                                                SQL*Plus: Release 8.1.7.0.0 - Production on 星期二 7月 26 15:33:15 2011                                                                                               (c) Copyright 2000 Oracle Corporation.  All rights reserved.                                                                                                          ERROR：                                                                            ORA-12514: TNS: 监听进程不能解析在连接描述符中给出的 SERVICE_NAME

7.查看本地tnsnames.ora

pic =                                                                                (DESCRIPTION =                                                                       (ADDRESS_LIST =                                                                      (ADDRESS = (PROTOCOL = TCP)(HOST = 100.100.1.31)(PORT = 1521))                   )                                                                                  (CONNECT_DATA =                                                                      (SERVER = DEDICATED)                                                               (SID = DSS)  -->(原来为service_name,将其改为SID)                                 )                                                                                )                                                                                                                                                                   C:\>sqlplus viewpic/viewpic@pic    -->再次使用sqlplus登陆正常                                                                                                         SQL*Plus: Release 8.1.7.0.0 - Production on 星期三 7月 27 09:49:57 2011            (c) Copyright 2000 Oracle Corporation.  All rights reserved.                                                                                                          连接到:                                                                            Oracle8i Enterprise Edition Release 8.1.7.0.0 - 64bit Production                   With the Partitioning and Parallel Server options                                  JServer Release 8.1.7.0.0 - 64bit Production                                                                                                                          SQL> select * from v$version;                                                                                                                                         BANNER                                                                             ----------------------------------------------------------------                   Oracle8i Enterprise Edition Release 8.1.7.0.0 - 64bit Production                   PL/SQL Release 8.1.7.0.0 - Production                                              CORE    8.1.7.0.0       Production                                                 TNS for IBM/AIX RISC System/6000: Version 8.1.7.0.0 - Developmen                   NLSRTL Version 3.4.1.0.0 - Production                                                                                                                                 SQL> select * from [email protected] where rownum < 5;                                                                                                                     ID FILENAME                                           XH                   ---------- -------------------------------------------------- --------------------    8606178 V1_00000020361002320070614095523017900004.jpg                              8605441 V1_00000002101002120070614095523011900023.jpg                              8605445 V1_00000002101002120070614095523011900025.jpg