Oracle Text 组件 说明

一.OracleText 组件说明

在说明之前，我们先用如下SQL 查看一下DB中的组件：
SQL> col comp_id for a15
SQL> col version for a15
SQL> col comp_name for a30
SQL> select comp_id,comp_name,versionfrom dba_registry ;

COMP_ID COMP_NAME VERSION
--------------- ---------------------------------------------
XDB Oracle XML Database 11.2.0.3.0
AMD OLAP Catalog 11.2.0.3.0
EM Oracle Enterprise Manager 11.2.0.3.0
SDO Spatial 11.2.0.3.0
ORDIM Oracle Multimedia 11.2.0.3.0
CONTEXT Oracle Text 11.2.0.3.0
ODM Oracle Data Mining 11.2.0.3.0
EXF Oracle Expression Filter 11.2.0.3.0
RUL Oracle Rules Manager 11.2.0.3.0
OWM Oracle Workspace Manager 11.2.0.3.0
CATALOG Oracle Database Catalog Views 11.2.0.3.0

COMP_ID COMP_NAME VERSION
--------------- ---------------------------------------------
CATPROC Oracle Database Packages and T11.2.0.3.0
ypes

J******M JServer J***A Virtual Machine 11.2.0.3.0
XML Oracle XDK 11.2.0.3.0
CATJ***A Oracle Database Java Packages 11.2.0.3.0
XOQ Oracle OLAP API 11.2.0.3.0
APS OLAP Analytic Workspace 11.2.0.3.0

17 rows selected.

MOS上的说明：
Oracle 8i/9i/10g/11g 组件（Components） 说明
/article/1449230.html

Oracle Text（全文索引） is available for no extra Licensing in all four database editions:Oracle Database Standard Edition One, Oracle Database Standard Edition (SE),Oracle Database Enterprise Edition (EE) and Oracle Database Personal Edition.Oracle Text uses standard SQL to index, search, and analyze text and documentsstored in the Oracle database, in files, and on the Web. Oracle Text canperform linguistic analysis on documents; search text using a variety ofstrategies including keyword searching, boolean operations, pattern matching,mixed thematic queries, HTML/XML section searching, etc. Oracle Text can rendersearch results in various formats including unformatted text, HTML withhighlighting, and original document format. Oracle Text supports multiplelanguages including Japanese, Korean, Traditional and Simplified Chinese.

Oracle Textindexes any document or textual content to add fast, accurate retrieval ofinformation to internet content management applications, e-Business catalogs,news services, job postings, and so on. It can index content stored in filesystems, databases, or on the Web.
--Oracle text（全文检索） 可以把任何文档和文件编入索引，从而是访问更快，更容易检索相关的信息。 Text 的索引可以存储在文件系统，数据库或者Web。

Oracle Text allows text searches to be combined with regular database searches in a singleSQL statement. It can find documents based on their textual content, metadata,or attributes. The Oracle Text SQL API makes it simple and intuitive to createand maintain Text indexes and run Text searches.

Text 组件使用的用户：

CTXSYS/CTXSYS The Oracle Text account

二． Oracle Text 组件重建

MOS 文档：
Note579601.1 Manual installation, deinstallation and verification ofOracle Text 11gR1
Note.970473.1 Manualinstallation, deinstallation and verification of Oracle Text 11gR2
Note.280713.1 Manualinstallation, deinstallation of Oracle Text 10gR1 and 10gR2
Note.275689.1 Manualinstallation, deinstallation of Oracle Text 9.2.0.x
Note.150316.1 Manualinstallation of Oracle Text version 9.0.1
Note.73605.1 Installationof Oracle Text version 8.1.x (formally interMedia Text)
Note.177233.1 Manualdeinstallation of Oracle Text (Intermedia Text)
Note.159959.1 Howto Install Oracle Text 9.0.1 using Scripts

2.1 Oracle 10g中重建

2.1.1 Manualinstallation of Text 10gR1 (10.1.0.x)
--安装Text 组件

1. Text dictionary, schema name CTXSYS, iscreated by calling following script from SQL*Plus connected as SYSDBA:
--使用如下脚本。

SQL> connect SYS/password@tns_ as SYSDBA
SQL> spool text_install.txt
SQL> @?/ctx/admin/catctx.sql CTXSYS SYSAUX TEMP NOLOCK

--脚本中各个参数含义：CTXSYS - is the ctxsys user password
SYSAUX - is the default tablespace for ctxsys
TEMP - is the temporary tablespace for ctxsys
LOCK|NOLOCK - ctxsys user account will be locked or not

2. The next step is to install appropriatelanguage-specific default preferences.
--指定默认的安装语言
There is scriptwhich creates language-specific default preferences for every language Oracletext supports in /ctx/admin/defaults directory, such as English(US),Danish(DK), Dutch(NL), Finnish(SF), French(F), German(D), Italian(IT),Portuguese(PT), Spanish(E), and Swedish(S). They are named in the formdrdefXX.sql, where XX is the international license plate code.
To manuallyinstall US default preferences, for example, log into sqlplus as CTXSYS, andrun 'drdefus.sql' as described below:
--如果使用US作为默认语言，执行drdefus.sql.

SQL> connect CTXSYS/password@tns_alias
SQL> @?/ctx/admin/defaults/drdefus.sql
SQL> spool off

注意：

If you haveinstalled Oracle Data Mining (ODM) before Text you will see in thetext_install.txt logfile ORA-955 errors for public synonyms, e.g. dm_svm_build,which can be ignored. We have a dummy package that mimics the API in CTXSYSschema, and we attempt to create public synonyms to it. Now, if ODM has beeninstalled, these public synonym creates fail and the public synonyms point toODM objects, which is what we want.

2.1.2 Text 10gR1 (10.1.0.x) Installation verification
--在10gR1中检查Text 的安装

1. Check to make sure that all Text objectswere created in CTXSYS schema and correct version is installed。
--确认所有的Text 对象已经安装在CTXSYS用户下。
2. Check to make sure that there are not invalid objects for CTXSYS.
--确保没有无效对象。

You should get: "no rows selected".
If there are then you can compile each invalid object manually.

-------------------示例------------------------------
connect SYS/password as SYSDBA

set pages 1000
col object_name format a40
col object_type format a20
col comp_name format a30
column library_name format a8
column file_spec format a60 wrap
spool text_install_verification.log

-- check on setup
select comp_name, status, substr(version,1,10) as version from dba_registrywhere comp_id = 'CONTEXT';
select * from ctxsys.ctx_version;
select substr(ctxsys.dri_version,1,10) VER_CODE from dual;

select count(*) from dba_objects where owner='CTXSYS';

-- Get a summary count
select object_type, count(*) from dba_objects where owner='CTXSYS' group byobject_type;

-- Any invalid objects
select object_name, object_type, status from dba_objects where owner='CTXSYS'and status != 'VALID' order by object_name;

spool off
------------------- cut here ------------------------------

2.1.3 A valid 10.1.0.2.0 Text installation shows the followingoutput
--在10gR2中检查安装：

Note: The number of CTXSYS objects might bedifferent on other Patch set version

SQL> select comp_name, status,substr(version,1,10) as version
from dba_registry where comp_id = 'CONTEXT';

COMP_NAME STATUS VERSION
------------------------------ ----------- ------------------------------
OracleText VALID 10.1.0.2.0

SQL> select count(*) from dba_objects where owner='CTXSYS';

COUNT(*)
----------
338

SQL> select object_type, count(*) from dba_objects
where owner='CTXSYS' group byobject_type;

OBJECT_TYPE COUNT(*)
-------------------- ----------
FUNCTION 5
INDEX 46
INDEXTYPE 4
LIBRARY 1
LOB 1
OPERATOR 6
PACKAGE 71
PACKAGE BODY 58
PROCEDURE 3
SEQUENCE 3
TABLE 37
TYPE 42
TYPE BODY 7
VIEW 54

14 rows selected.

SQL> select object_name, object_type, status from dba_objects
where owner='CTXSYS' and status !='VALID'
order by object_name;

no rows selected

SQL> spool off

2.1.4 Steps to Deinstall Oracle Text Manually
--卸载Text 组件

Before deinstalling Oracle Text, it is best to first drop all Text Indexes built inschemas other than CTXSYS.
--在卸载Oracle Text 组件之前，最好先drop 掉CTXSYS 用户上的所有Textindexes。

Text dictionary,schema name CTXSYS, is removed by calling following script from SQL*Plusconnected as SYSDBA:
--调用如下脚本删除Text dictionary，CTXSYS用户：

SQL> connect SYS/password as SYSDBA
SQL> spool text_deinstall.log
SQL> @?/ctx/admin/catnoctx.sql
SQL> drop procedure sys.validate_context;
SQL> spool off

Review the output file text_deinstall.log for errors.

注意事项：

（1）ORA-04043 for droppingsys.validate_context can be ignored, as in base release version this procedurewas owned by ctxsys and needs to be owned by sys.
（2）When Data Mining is not installedand we deinstall Oracle Text, catnoctx.sql will not drop the Data Mining publicsynonyms and they must be removed manually
--如果没有安装Data Mining 组件，那么在删除Text 组件时，DataMining 的公共同义词不会被删除，需要手工的移除，命令如下：

-- Drop CTXSYS publicsynonyms using the commands:

SQL> set hea off
SQL> spool /path/drop_ctxsys_synonyms.sql
SQL> select 'Drop public synonym ' || SYNONYM_NAME || ' ;' from DBA_SYNONYMSwhere TABLE_OWNER = 'CTXSYS';
SQL> spool off
SQL> @/path/drop_ctxsys_synonyms.sql

Deinstallation of Oracle Text is now complete.

2.2 Oracle 11gR2 中重建

2.2.1 Manual installation of Text 11gR2 (11.2.0.1.0)

1. Text dictionary, schema name CTXSYS, iscreated by calling following script from SQL*Plus connected as SYSDBA:

SQL> connect SYS/password as SYSDBA
SQL> spool text_install.txt
SQL> @?/ctx/admin/catctx.sql change_on_install SYSAUX TEMP NOLOCK

--各个参数含义：
change_on_install - is the ctxsys userpassword
SYSAUX - is the default tablespace for ctxsys
TEMP - is the temporary tablespace for ctxsys
LOCK|NOLOCK - ctxsys user account will be locked or not

2. The next step is to install appropriatelanguage-specific default preferences.
There is scriptwhich creates language-specific default preferences for every language OracleText supports in $O_H/ctx/admin/defaults directory, such as English(US),Danish(DK), Dutch(NL), Finnish(SF), French(F), German(D), Italian(IT),Portuguese(PT), Spanish(E), and Swedish(S). They are named in the formdrdefXX.sql, where XX is the international license plate code.

To manuallyinstall American default preferences, for example, log into sqlplus as CTXSYS,and run following statement:

SQL> connect"CTXSYS"/"change_on_install"
SQL> @?/ctx/admin/defaults/dr0defin.sql "AMERICAN";
SQL> connect SYS/password as SYSDBA
SQL> alter user ctxsys account lock password expire;
SQL> spool off

注意：

Due to the usageoff Oracle Outside in HTML Export filtering technology on some platformsthe LD_LIBRARY_PATH or SHLIB_PATH or LIBPATH must be set properly in order towork.
--在一些系统上使用Text 必须指定相关参数。

The followingtable shows in which operating system the ctxhx relies on the shared librarypath setting and which environment variable needs to be set:
--下表列出了不同操作系统上ctxhx依赖的变量，这些变量必须指定：

Platform: Requires path set: ENV variable:
--------------------- --------------------- -------------------
Linux x86-64 YES LD_LIBRARY_PATH
Solaris SPARC64 YES LD_LIBRARY_PATH
IBMAIX YES LIBPATH
HP PA-RISC YES SHLIB_PATH
HP Itanium YES LD_LIBRARY_PATH

- If you have the C Shell (csh or tcsh), enter the following:
$ setenv LD_LIBRARY_PATH $ORACLE_HOME/ctx/lib:$LD_LIBRARY_PATH

- If you have the Bourne shell (sh), Bash shell (bash),or Korn shell (ksh), enter the following:
$ export LD_LIBRARY_PATH=$ORACLE_HOME/ctx/lib:$LD_LIBRARY_PATH

Run thefollowing command to check if the LD_LIBRARY_PATH environmental variable is setcorrectly:
$ echo $LD_LIBRARY_PATH

2.2.2 Text 11gR2 (11.2.0.1.0) Installation verification
--验证安装

1. Check to make sure that all Text objectswere created in CTXSYS schema and correct version is installed
2. Check to make sure that there are not invalid objects for CTXSYS.
You should get: "no rows selected".

If there are then you can compile eachinvalid object manually.

------------------- 示例------------------------------
connect SYS/password as SYSDBA

set pages 1000
col object_name format a40
col object_type format a20
col comp_name format a30
column library_name format a8
column file_spec format a60 wrap
spool text_install_verification.log

-- check on setup
select comp_name, status, substr(version,1,10) as version from dba_registrywhere comp_id = 'CONTEXT';
select * from ctxsys.ctx_version;
select substr(ctxsys.dri_version,1,10) VER_CODE from dual;

select count(*) from dba_objects where owner='CTXSYS';

-- Get a summary count
select object_type, count(*) from dba_objects where owner='CTXSYS' group byobject_type;

-- Any invalid objects
select object_name, object_type, status from dba_objects where owner='CTXSYS'and status != 'VALID' order by object_name;

spool off
------------------- cut here ------------------------------

（1）A valid 11.2.0.1.0 Text installation showsthe following output

SQL> select comp_name, status,substr(version,1,10) as version from dba_registry where comp_id = 'CONTEXT';

COMP_NAME STATUS VERSION
------------------- -------- ----------
Oracle Text VALID 11.2.0.1.0

SQL> select * from ctxsys.ctx_version;

VER_DICT VER_CODE
---------- ----------
11.2.0.1.0 11.2.0.1.0

SQL> select substr(ctxsys.dri_version,1,10) VER_CODE from dual;

VER_CODE
----------
11.2.0.1.0

SQL> select count(*) from dba_objects where owner='CTXSYS';

COUNT(*)
----------
366

SQL>
SQL> -- Get a summary count
SQL> select object_type, count(*) from dba_objects where owner='CTXSYS'group by object_type;

OBJECT_TYPE COUNT(*)
------------------- ----------
SEQUENCE 3
PROCEDURE 2
OPERATOR 6
PACKAGE 73
PACKAGEBODY 62
LIBRARY 1
LOB 2
TYPEBODY 6
VIEW 71
INDEXTYPE 4
FUNCTION 2
TABLE 47
INDEX 56
TYPE 31

SQL>
SQL> -- Any invalid objects
SQL> select object_name, object_type, status from dba_objects whereowner='CTXSYS' and status != 'VALID' order by object_name;

no rows selected

SQL>
SQL> spool off

（2）A valid 11.2.0.2.0Text installation shows the following output

SQL> select comp_name, status,substr(version,1,10) as version from dba_registry where comp_id = 'CONTEXT';

COMP_NAME STATUS VERSION
------------------- -------- ----------
Oracle Text VALID 11.2.0.2.0

SQL> select * from ctxsys.ctx_version;

VER_DICT VER_CODE
---------- ----------
11.2.0.2.0 11.2.0.2.0

SQL> select substr(ctxsys.dri_version,1,10) VER_CODE from dual;

VER_CODE
----------
11.2.0.2.0

SQL> select count(*) from dba_objects where owner='CTXSYS';

COUNT(*)
----------
382

SQL>
SQL> -- Get a summary count
SQL> select object_type, count(*) from dba_objects where owner='CTXSYS'group by object_type;

OBJECT_TYPE COUNT(*)
------------------- ----------
SEQUENCE 3
PROCEDURE 2
OPERATOR 6
LOB 2
LIBRARY 1
PACKAGE 74
PACKAGE BODY 63
TYPE BODY 6
TABLE 49
INDEX 59
VIEW 76
FUNCTION 2
INDEXTYPE 4
TYPE 35

SQL>
SQL> -- Any invalid objects
SQL> select object_name, object_type, status from dba_objects where owner='CTXSYS'and status != 'VALID' order by object_name;

no rows selected

SQL>
SQL> spool off

2.2.3 Steps to Deinstall Oracle Text 11gR2 manually

Before deinstalling Oracle Text, it is best to first drop all Text Indexes built inschemas other than CTXSYS.
When deinstalling Oracle Text, for example to get rid of an invalid or corrupt Textenvironment, it should immediately be followed by a reinstallation of Text dueto the dependency of other components on Text objects.

Text dictionaryis removed by calling following script from SQL*Plus connected as SYSDBA:

SQL> connect SYS/password as SYSDBA
SQL> spool text_deinstall.log
SQL> @?/ctx/admin/catnoctx.sql
SQL> drop procedure sys.validate_context;
SQL> spool off

三．全文索引的常见问题

MOS：Frequently Asked Questions for Oracle Text[ID 153264.1]

What is Oracle Text?
Can you enumerate the main features ofOracle Text?
What is the official Web page forOracle Text?
What's the official documentation forOracle Text?
What is the difference between ConTextand Oracle Text?
How do you determine what version ofOracle Text you are running?
Are there any books on Oracle Text?
How do you manually install Oracle Text?
How do I check my Text installationand setup?
How do you configure Oracle Text withan existing database using Database Configuration Assistant (DBCA)?
Does Text work with Replication?
Can you partition an text index?
Does Text work with Real ApplicationCluster(RAC)?
How do you tune a Text Query?
How do you empty CTX_INDEX_ERRORSview?
How do you drop an index that is inFAILED or LOADING state?
Should I use CTX_DDL or ALTER INDEX tomaintain my index?
Can you query an text index during theoptimization process?
Does Oracle Text create theme indexesby default?
What does "ABOUT" mean in aquery?
Where can I find working code samples?
My index creation seemed to succeed,but my searches don't find any information. Why not?
What are Document Services?
What are the Filters used by OracleText?
Can I Build Indexes on XML AttributeValues?
Can I Create a Text Index on More ThanOne Column?
How Fast is Text at Indexing?
How do I increase the score for adocument?
The CTXSYS account is locked. How do Iunlock the account?
ORA-28575: unable to open RPCconnection to external procedure agent while using CTX_DOC.IFILTER
Create index error: ORA-00955: name isalready used by an existing object









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