日月明王ORACLE DBA空间: ORACLE

Used parameter files: TNS-03505: Failed to resolve name

Mon, 02 Jun 2008 14:46:43 GMT

Used parameter files: TNS-03505: Failed to resolve name

ORACLE DBA 日月明王数据库空间http://sunmoonking.spaces.live.com

装了一个ORACLE EBS12，发现一个奇怪的问题，在CLIENT可以TNSPING服务名，在SERVER端却不能TNSPING通，现象如下：

ATC_CORI/home/user00/oracle>tnsping CORIDB

TNS Ping Utility for IBM/AIX RISC System/6000: Version 10.2.0.2.0 - Production on 29-APR-2008 14:56:17

Used parameter files:

TNS-03505: Failed to resolve name

注意这里，可以看出ORACLE找不到TNSNAMES.ora文件，这是因为ORACLE EBS的TNSNAMS.ORA不是在$ORACLE_HOME/network/admin下，这应该是一个BUG，设置路径以便ORACLE可以正确查找到相应文件。
ATC_CORI/home/user00/oracle>export TNS_ADMIN=/home/user00/oracle/coridb/db/tech_st/10.2.0/network/admin/coridb_atc_cori
ATC_CORI/home/user00/oracle>tnsping coridb

TNS Ping Utility for IBM/AIX RISC System/6000: Version 10.2.0.2.0 - Production on 29-APR-2008 15:06:00

Used parameter files:
/home/user00/oracle/coridb/db/tech_st/10.2.0/network/admin/coridb_atc_cori/sqlnet_ifile.ora

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=atc_cori.erp.net)(PORT=1521)) (CONNECT_DATA= (SERVICE_NAME=CORIDB.E
RP.NET) (INSTANCE_NAME=CORIDB.ERP.NET)))
OK (200 msec)

UTF8字符集，NLS_LANG=AMERICAN_AMERICA.UTF8用两个字节存储汉字

Tue, 08 Apr 2008 04:34:52 GMT

1* select value from v$nls_parameters where PARAMETER = 'NLS_CHARACTERSET'

SQL> /

VALUE

----------------------------------------------------------------

UTF8

SQL> select dump('汉') from dual;

DUMP('汉')

--------------------------------------------------

Typ=96 Len=3: 230,177,137

SQL> exit

从 Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production

With the Partitioning, OLAP and Data Mining options 断开

C:\>set NLS_LANG=AMERICAN_AMERICA.UTF8

C:\>sqlplus "/ as sysdba"

SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 8 11:24:39 2008

Connected to:

Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL> select dump('汉') from dual;

DUMP('汉')

---------------------

Typ=96 Len=2: 186,186

SQL> select lengthb('汉') from dual;

LENGTHB('汉')

-------------

SQL> create table wwm (name char(4));

Table created.

SQL> insert into wwm values ('汉字');

1 row created.

SQL> select * from wwm;

NAME

----

汉字

也就是说,你暗示ORACLE你的环境和ORACLE里的字符集一致。ORACLE就直接保存你输入的东西,而不会把输入转成UTF8

C:\>set NLS_LANG=AMERICAN_AMERICA.zhs16gbk

C:\>sqlplus "/ as sysdba"

SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 8 11:42:43 2008

Connected to:

Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL> select * from wwm;

NAME

--------

??？

SQL> select dump(name) from wwm;

DUMP(NAME)

-------------------------------------------------------------------------------

Typ=96 Len=4: 186,186,215,214

OracleDBConsoleorcl无法启动，导致企业管理器EM不能访问

Wed, 26 Mar 2008 09:17:23 GMT

OracleDBConsoleorcl无法启动，导致企业管理器EM不能访问

日月明王ORACLE DBA BLOG http://sunmoonking.spaces.live.com/

C:\>emca -r

EMCA 开始于 Wed Mar 26 17:09:50 CST 2008

输入以下有关要配置的数据库的信息

监听程序端口号: 1521

数据库 SID: orcl

服务名: orcl

通知的电子邮件地址:

通知的电子邮件网关:

dbsnmp 口令:

sysman 口令:

sys 口令:

-----------------------------------------------------------------

已指定以下设置

数据库 ORACLE_HOME ................ D:\oracle\product\10.1.0\db_1

Enterprise Manager ORACLE_HOME ................ D:\oracle\product\10.1.0\db_1

数据库主机名 ................ CND72825VH

监听程序端口号 ................ 1521

数据库 SID ................ orcl

服务名 ................ orcl

通知的电子邮件地址 ...............

通知的电子邮件网关 ...............

-----------------------------------------------------------------

是否继续? [是/否]: 是

已为数据库 orcl 配置了 DBConsole

是否要为指定的数据库重新配置 DBConsole? [是/否]: 是

请确保 DBConsole 已关闭

如果准备好继续, 请按 <Enter>

2008-3-26 17:10:32 oracle.sysman.emcp.EMConfig updateReposVars

信息: 正在更新文件 D:\oracle\product\10.1.0\db_1\sysman\emdrep\config\repository

.variables...

2008-3-26 17:10:39 oracle.sysman.emcp.EMConfig stopOMS

信息: 正在停止 DBConsole...

2008-3-26 17:10:41 oracle.sysman.emcp.EMConfig addPortEntries

信息: 正在更新文件 D:\oracle\product\10.1.0\db_1\install\portlist.ini...

2008-3-26 17:10:41 oracle.sysman.emcp.EMConfig updateEmdProps

信息: 正在更新文件 D:\oracle\product\10.1.0\db_1\sysman\config\emd.properties...

2008-3-26 17:10:41 oracle.sysman.emcp.EMConfig updateConfigFiles

信息: targets.xml 文件已成功更新

2008-3-26 17:10:41 oracle.sysman.emcp.EMConfig updateEmomsProps

信息: 正在更新文件 D:\oracle\product\10.1.0\db_1\sysman\config\emoms.properties.

2008-3-26 17:10:41 oracle.sysman.emcp.EMConfig updateConfigFiles

信息: emoms.properties 文件已成功更新

2008-3-26 17:10:43 oracle.sysman.emcp.EMConfig startOMS

信息: 正在启动 DBConsole...

2008-3-26 17:12:33 oracle.sysman.emcp.EMConfig perform

信息: DBConsole 已成功启动

2008-3-26 17:12:33 oracle.sysman.emcp.EMConfig perform

信息: >>>>>>>>>>> Enterprise Manager URL 为 http://CND72825VH:5500/em <<<<<<<<<<

Enterprise Manager 配置已成功完成

EMCA 结束于 Wed Mar 26 17:12:33 CST 2008

运行成功后，企业管理器EM正常访问

ORACLE深入第九章 Partitioning 分区（二）

Wed, 23 Jan 2008 02:30:42 GMT

ORACLE深入第九章 Partitioning 分区

日月明王ORACLE DBA博客 http://sunmoonking.spaces.live.com

数据迁移Exchanging Partitions

很多情况下我们希望保留一段时间的数据,比如1年,最近几天的数据插入,那么1年前的OLD数据应该保存在一个分区中,以便将常用的和历史数据分开,以提高性能.

建测试表,以timestamp分区,一个locally partitioned index 在ID上,一个global index 在TIMESTAMP上.

SQL> CREATE TABLE partitioned

2 ( timestamp date,

3 id int

4 )

5 PARTITION BY RANGE (timestamp)

6 (

7 PARTITION fy_2004 VALUES LESS THAN

8 ( to_date('01-01-2005','dd-mm-yyyy') ) ,

9 PARTITION fy_2005 VALUES LESS THAN

10 ( to_date('01-01-2006','dd-mm-yyyy') )

11 )

12 /

Table created.

1 insert into partitioned partition(fy_2004)

2 select to_date('31-12-2004','dd-mm-yyyy')-mod(rownum,360), object_id

3* from all_objects

SQL> /

38996 rows created.

1 insert into partitioned partition(fy_2005)

2 select to_date('31-12-2005','dd-mm-yyyy')-mod(rownum,360), object_id

3* from all_objects

SQL> /

38996 rows created.

SQL> create index partitioned_idx_local on partitioned(id) LOCAL

2 /

Index created.

SQL> create index partitioned_idx_global on partitioned(timestamp) GLOBAL

2 /

Index created. .

在2006年的时候,我们需要将2004年的数据排除出此表,但又不想失去数据,可能将来的某一天我们要查2004年的数据,那么我们就可以archive它,并且插入最新的2006年的数据.

首先,可以将fy_2004分区exchange成单独的一个表.同样,也可以将fy_2006这个单独的一个普通表添加到分区表中作为新的分区.

SQL> create table fy_2004 ( timestamp date, id int );

Table created.

SQL> create index fy_2004_idx on fy_2004(id)

2 /

Index created.

SQL> create table fy_2006 ( timestamp date, id int );

Table created.

1 insert into fy_2006

2 select to_date('31-12-2006','dd-mm-yyyy')-mod(rownum,360), object_id

3* from all_objects

SQL> /

39003 rows created.

SQL> create index fy_2006_idx on fy_2006(id) nologging

2 /

Index created.

开始exchange

SQL> alter table partitioned

2 exchange partition fy_2004 with table fy_2004

3 including indexes without validation

4 /

Table altered.

SQL> select count(*) from partitioned partition(fy_2004);

COUNT(*)

----------

SQL> select count(*) from fy_2004;

COUNT(*)

----------

38996

看到已经exchange fy_2004了,这个分区已经没用,可以DROP

SQL> alter table partitioned drop partition fy_2004

2 /

Table altered.

EXCHANGE 效率很高,只是修改一些数据字典,而不会产生大量的I/O

1 alter table partitioned add partition fy_2006

2* values less than ( to_date('01-01-2007','dd-mm-yyyy') )

SQL> /

Table altered.

SQL> alter table partitioned exchange partition fy_2006

2 with table fy_2006 including indexes without validation

3 /

Table altered.

SQL> select count(*) from partitioned partition(fy_2006);

COUNT(*)

----------

39003

SQL> select count(*) from fy_2006;

COUNT(*)

----------

检查下INDEX是否正常

1 select TABLE_NAME||' '||index_name||' '|| status from user_indexes

2* where table_name in('PARTITIONED','FY_2004','FY_2006')

SQL> /

TABLE_NAME||''||INDEX_NAME||''||STATUS

---------------------------------------------------------------------------

FY_2004 FY_2004_IDX VALID

FY_2006 FY_2006_IDX VALID

PARTITIONED PARTITIONED_IDX_LOCAL N/A

PARTITIONED PARTITIONED_IDX_GLOBAL UNUSABLE

看到global index无效了, 因为它原有的指向旧数据的entries还在,而指向新分区的entries却没有自己建立起来,现在只能重建

SQL> alter index partitioned_idx_global rebuild;

Index altered.

所以,为了避免全局索引无效,我们在drop,split,exchange,add等操作时要加上UPDATE GLOBAL INDEXES

alter table partitioned

2 exchange partition fy_2004

3 with table fy_2004

4 including indexes

5 without validation

6 UPDATE GLOBAL INDEXES

7 /

Table altered.

或

alter table partitioned

2 drop partition fy_2004

3 UPDATE GLOBAL INDEXES

需要说明的是,alter index rebuild要比update global indexes快.但是update global indexes却可以保证高可用性,对用户的影响降到最小.

其他语句

ALTER TABLE sales

MOVE PARTITION sales_q1_1998 TABLESPACE ts_arch_q1_1998 COMPRESS;

ALTER TABLE sales

MODIFY PARTITION sales_q1_1998 REBUILD UNUSABLE LOCAL INDEXES;

ALTER TABLE sales MERGE PARTITIONS sales_q1_1998, sales_q2_1998

INTO PARTITION sales_1_1998 TABLESPACE ts_arch_1_1998

COMPRESS UPDATE GLOBAL INDEXES;

Adding Partitions

Range-Partitioned

ALTER TABLE sales

ADD PARTITION jan96 VALUES LESS THAN ('01-FEB-1999')

TABLESPACE tsx;

Hash-Partitioned

ALTER TABLE scubagear ADD PARTITION;

或 ALTER TABLE scubagear ADD PARTITION p_named TABLESPACE gear5;

List-Partitioned

ALTER TABLE q1_sales_by_region

ADD PARTITION q1_nonmainland VALUES ('HI', 'PR')

STORAGE (INITIAL 20K NEXT 20K) TABLESPACE tbs_3

NOLOGGING;

Dropping Partitions

ALTER TABLE sales DISABLE CONSTRAINT dname_sales1;

ALTER TABLE sales DROP PARTITTION dec98;

ALTER TABLE sales ENABLE CONSTRAINT dname_sales1;

Moving Partitions

ALTER TABLE parts MOVE PARTITION depot2

TABLESPACE ts094 NOLOGGING;

Splitting and Merging Partitions

range-partitioned

ALTER TABLE vet_cats SPLIT PARTITION

fee_katy at (100) INTO ( PARTITION

fee_katy1 ..., PARTITION fee_katy2 ...);

ALTER INDEX JAF1 REBUILD PARTITION fee_katy1;

ALTER INDEX JAF1 REBUILD PARTITION fee_katy2;

ALTER INDEX VET REBUILD PARTITION vet_parta;

ALTER INDEX VET REBUILD PARTITION vet_partb;

range-list

ALTER TABLE quarterly_regional_sales

MERGE SUBPARTITIONS q1_1999_northwest, q1_1999_southwest

INTO SUBPARTITION q1_1999_west

TABLESPACE tbs_west;

Truncating Partitions

ALTER TABLE sales

DISABLE CONSTRAINT dname_sales1;

ALTER TABLE sales TRUNCATE PARTITTION dec94;

ALTER TABLE sales

ENABLE CONSTRAINT dname_sales1;

Coalescing Partitions

ALTER TABLE ouu1

COALESCE PARTITION;

日月明王ORACLE DBA空间: ORACLE

Used parameter files: TNS-03505: Failed to resolve name

Used parameter files: TNS-03505: Failed to resolve name

ORACLE DBA 日月明王数据库空间http://sunmoonking.spaces.live.com

UTF8字符集，NLS_LANG=AMERICAN_AMERICA.UTF8用两个字节存储汉字

OracleDBConsoleorcl无法启动，导致企业管理器EM不能访问

OracleDBConsoleorcl无法启动，导致企业管理器EM不能访问

日月明王ORACLE DBA BLOG http://sunmoonking.spaces.live.com/

ORACLE深入 第九章 Partitioning 分区 （二）

ORACLE深入 第九章 Partitioning 分区

日月明王ORACLE DBA博客 http://sunmoonking.spaces.live.com

ORACLE深入第九章 Partitioning 分区（二）

ORACLE深入第九章 Partitioning 分区