EM Recreate and PLS00302: component 'VALID' must be declared

公司进行domain的migration,给我的生活工作带来诸多不便，相当杯具:( 先不说email用不了，收不到任何邮件，搞得心慌慌，而且今天尝试访问下EM，居然发现搞不定了！

因为用的是windows操作系统，首先想到去启动“OracleDBConsoleorcl"服务，但是发现根本启动不起来。后来发现因为进行域迁移，电脑的名字也给改了，因此首先就导致listener不work了，这个好办，直接打开listener.ora文件将Host名字给改过来，这样listner就可以正常work了。因为em dbconsole依赖一个oc4j的repository,一般名字也是跟host名字相关的，所以很显然原来的repository也用不了了，因此需要重新创建以下。

通过命令 emca -config dbcontrol db -repos recreate来创建新的repository, 如下

但是杯具的是，在创建repository的时候出现问题了！找到对应的log文件查看下，发现如下一些错误信息...

INFO: Creating the EM repository (this may take a while) ...Dec 15, 2010 4:12:57 PM oracle.sysman.emcp.EMReposConfig createRepositoryCONFIG: ORA-06550: line 1, column 21:PLS-00302: component 'VALID' must be declaredORA-06550: line 1, column 7:PL/SQL: Statement ignored
oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-06550: line 1, column 21:PLS-00302: component 'VALID' must be declaredORA-06550: line 1, column 7:PL/SQL: Statement ignored
at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeImpl(SQLEngine.java:1474)at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeScript(SQLEngine.java:848)at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executeScript(SQLPlusEngine.java:267)at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executeScript(SQLPlusEngine.java:308)at oracle.sysman.emcp.EMReposConfig.createRepository(EMReposConfig.java:422)at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:192)at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:134)at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:171)at oracle.sysman.emcp.EMConfigAssistant.invokeEMCA(EMConfigAssistant.java:486)at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1142)at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:470)at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:419)

注意错误信息中给出VALID这个东西找不到，可以猜测一下应该是调用某个procedure （VALID），发现不存在造成的。那么究竟是什么东东呢？ google了一下，发现有人提到dbms_registry.valid('EM')。 难倒是这个VALID??

首先想到是不是dbms_registry不是默认安装的，需要手动安装一下呢？

先describe了一下dbms_registry看看，

SQL> desc dbms_registry
PROCEDURE CHECK_SERVER_INSTANCE
PROCEDURE LOADED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_VERSION                   VARCHAR2                IN     DEFAULT
 COMP_BANNER                    VARCHAR2                IN     DEFAULT
PROCEDURE LOADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_NAME                      VARCHAR2                IN
 COMP_PROC                      VARCHAR2                IN     DEFAULT
 COMP_SCHEMA                    VARCHAR2                IN     DEFAULT
 COMP_PARENT                    VARCHAR2                IN     DEFAULT
FUNCTION TIME_STAMP RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN

SQL>

奇怪，dbms_registry是存在的，不过可以看到是不存在VALID这个procedure的！难倒猜错了？不甘心又google了一下，发现网上有介绍package dbms_registry里面确实是存在VALID这个procedure的！这真是太诡异了！

查看了下Oracle安装目录下的脚本（?\RDBMS\ADMIN), 发现有两个文件中涉及到这个package的创建，

1） catclust.sql

2)   prvtcr.plb

这两者的区别是第一个可以看到源代码，第二个因为package是wrapped的，看不到具体信息。 

catclust.sql中dbms_registry部分代码如下，

CREATE OR REPLACE PACKAGE dbms_registry AS

PROCEDURE loading     (comp_id      IN VARCHAR2,
                       comp_name    IN VARCHAR2,
                       comp_proc    IN VARCHAR2 DEFAULT NULL,
                       comp_schema  IN VARCHAR2 DEFAULT NULL,
                       comp_parent  IN VARCHAR2 DEFAULT NULL);

PROCEDURE loaded      (comp_id      IN VARCHAR2,
                       comp_version IN VARCHAR2 DEFAULT NULL,
                       comp_banner  IN VARCHAR2 DEFAULT NULL);

FUNCTION  time_stamp  (comp_id IN VARCHAR2) RETURN VARCHAR2; 

PROCEDURE check_server_instance;

END dbms_registry;
/

这个跟我上面的describe得到的内容很吻合，那么 prvtcr.plb这里面又是什么东东呢？ 索性一不做二不休，直接运行下这个脚本看看，

SQL> @?\rdbms\admin\prvtcr.plb

完了之后再describe一下看看，

SQL> desc dbms_registry;
PROCEDURE CHECK_SERVER_INSTANCE
FUNCTION COMP_NAME RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
PROCEDURE DOWNGRADED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 OLD_VERSION                    VARCHAR2                IN
PROCEDURE DOWNGRADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 OLD_NAME                       VARCHAR2                IN     DEFAULT
 OLD_PROC                       VARCHAR2                IN     DEFAULT
 OLD_SCHEMA                     VARCHAR2                IN     DEFAULT
 OLD_PARENT                     VARCHAR2                IN     DEFAULT
PROCEDURE INVALID
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION IS_COMPONENT RETURNS BOOLEAN
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION IS_IN_REGISTRY RETURNS BOOLEAN
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION IS_LOADED RETURNS NUMBER
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 VERSION                        VARCHAR2                IN     DEFAULT
FUNCTION IS_STARTUP_REQUIRED RETURNS NUMBER
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION IS_VALID RETURNS NUMBER
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 VERSION                        VARCHAR2                IN     DEFAULT
PROCEDURE LOADED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_VERSION                   VARCHAR2                IN     DEFAULT
 COMP_BANNER                    VARCHAR2                IN     DEFAULT
PROCEDURE LOADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_NAME                      VARCHAR2                IN
 COMP_PROC                      VARCHAR2                IN     DEFAULT
 COMP_SCHEMA                    VARCHAR2                IN     DEFAULT
 COMP_PARENT                    VARCHAR2                IN     DEFAULT
PROCEDURE LOADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_NAME                      VARCHAR2                IN
 COMP_PROC                      VARCHAR2                IN
 COMP_SCHEMA                    VARCHAR2                IN
 COMP_SCHEMAS                   DBMS_REGISTRY           IN
 COMP_PARENT                    VARCHAR2                IN     DEFAULT
FUNCTION NOTHING_SCRIPT RETURNS VARCHAR2
FUNCTION PREV_VERSION RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
PROCEDURE REMOVED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
PROCEDURE REMOVING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
PROCEDURE RESET_VERSION
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SCHEMA RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SCHEMA_LIST RETURNS DBMS_REGISTRY
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SCHEMA_LIST_STRING RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SCRIPT RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 SCRIPT_NAME                    VARCHAR2                IN
FUNCTION SCRIPT_PATH RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SCRIPT_PREFIX RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION SESSION_NAMESPACE RETURNS VARCHAR2
PROCEDURE SET_COMP_NAMESPACE
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 NAMESPACE                      VARCHAR2                IN
PROCEDURE SET_SESSION_NAMESPACE
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 NAMESPACE                      VARCHAR2                IN
PROCEDURE STARTUP_COMPLETE
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
PROCEDURE STARTUP_REQUIRED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION STATUS RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION STATUS_NAME RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 STATUS                         NUMBER                  IN
FUNCTION SUBCOMPONENTS RETURNS TABLE OF VARCHAR2(30)
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_OPTION                    NUMBER                  IN     DEFAULT
PROCEDURE UPDATE_SCHEMA_LIST
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 COMP_SCHEMAS                   DBMS_REGISTRY           IN
PROCEDURE UPGRADED
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 NEW_VERSION                    VARCHAR2                IN     DEFAULT
 NEW_BANNER                     VARCHAR2                IN     DEFAULT
PROCEDURE UPGRADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 NEW_NAME                       VARCHAR2                IN     DEFAULT
 NEW_PROC                       VARCHAR2                IN     DEFAULT
 NEW_SCHEMA                     VARCHAR2                IN     DEFAULT
 NEW_PARENT                     VARCHAR2                IN     DEFAULT
PROCEDURE UPGRADING
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
 NEW_NAME                       VARCHAR2                IN
 NEW_PROC                       VARCHAR2                IN
 NEW_SCHEMA                     VARCHAR2                IN
 NEW_SCHEMAS                    DBMS_REGISTRY           IN
 NEW_PARENT                     VARCHAR2                IN     DEFAULT
PROCEDURE VALID
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN
FUNCTION VERSION RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 COMP_ID                        VARCHAR2                IN

可以看到这次dbms_registy里面包含了VALID这个procedure。跟上面的区别除了多了些procedure, 也少了一个TIME_STAMP function. 

注意到catclust.sql文件中的相关注释，

Rem -------------------------------------------------------------------------
Rem DBMS REGISTRY PACKAGE - minimal version for loading CATALOG
Rem -------------------------------------------------------------------------

可以猜测默认安装的dbms_registry是个精简版本，复杂版本的就没有暴漏源代码。

这个问题解决之后，重新创建下dbconsole repository, 发现成功了！

可以发现现在的em URL的地址也改成了新的host名字！

-- 总结--

这件事给我的最大启示就是遇到不知道原因的时候，要大胆进行猜测尝试，这样往往会有意想不到的结果！