12c Grid Infrastructure Management Repository-GIMR

在Grid Infrastructure 12.1.0.2 中安裝完grid，可以看到資源中多了ora.MGMTLSNR及ora.mgmtdb，同時(shí)啟動(dòng)了一個(gè)實(shí)例,sid=-MGMTDB.

[grid@prodb1 ~]$ crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.LISTENER.lsnr
               ONLINE  ONLINE       prodb1                   STABLE
               ONLINE  ONLINE       prodb2                   STABLE
ora.OCR_VOTE.dg
               ONLINE  ONLINE       prodb1                   STABLE
               ONLINE  ONLINE       prodb2                   STABLE
ora.asm
               ONLINE  ONLINE       prodb1                   Started,STABLE
               ONLINE  ONLINE       prodb2                   Started,STABLE
ora.net1.network
               ONLINE  ONLINE       prodb1                   STABLE
               ONLINE  ONLINE       prodb2                   STABLE
ora.ons
               ONLINE  ONLINE       prodb1                   STABLE
               ONLINE  ONLINE       prodb2                   STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       prodb1                   STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       prodb1                   169.254.124.55 192.1
                                                             68.0.101,STABLE
ora.cvu
      1        ONLINE  ONLINE       prodb1                   STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       prodb1                   Open,STABLE
ora.oc4j
      1        ONLINE  ONLINE       prodb1                   STABLE
ora.prodb1.vip
      1        ONLINE  ONLINE       prodb1                   STABLE
ora.prodb2.vip
      1        ONLINE  ONLINE       prodb2                   STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       prodb1                   STABLE
--------------------------------------------------------------------------------

[grid@prodb1 ~]$ ps -ef |grep pmon
grid      3443     1  0 20:16 ?        00:00:00 mdb_pmon_-MGMTDB
grid     10452     1  0 19:29 ?        00:00:00 asm_pmon_+ASM1

Management Repository是一個(gè)由Oracle Clusterware在12c中管理的單實(shí)例數(shù)據(jù)庫。由于它是單實(shí)例數(shù)據(jù)庫，它將在集群中的一個(gè)節(jié)點(diǎn)上啟動(dòng)并運(yùn)行; 因?yàn)樗蒅I管理，如果托管節(jié)點(diǎn)關(guān)閉，數(shù)據(jù)庫將自動(dòng)故障轉(zhuǎn)移到其他節(jié)點(diǎn)。管理數(shù)據(jù)庫在12c中存儲(chǔ)Cluster Health Monitor（CHM / OS，ora.crf）和其他數(shù)據(jù)的中央存儲(chǔ)庫。在12.1中，默認(rèn)情況下，Management數(shù)據(jù)庫使用與OCR/Voting File相同的共享存儲(chǔ); 在12.2中，全新安裝允許指定單獨(dú)的磁盤組。

在12.1.0.1中，GIMR是可選的，如果未選擇在安裝/升級(jí)期間配置管理數(shù)據(jù)庫，則將禁用依賴于它的所有功能（CHM / OS）。
在12.1.0.2中默認(rèn)安裝GIMR，不可選。并且除Exadata之外不支持關(guān)閉它。

啟動(dòng)數(shù)據(jù)庫：
管理數(shù)據(jù)庫由GI管理，可自動(dòng)啟動(dòng)并運(yùn)行。如果由于某種原因它已關(guān)閉，可以使用以下srvctl命令啟動(dòng)：

用法：srvctl start mgmtdb [-startoption <start_option>] [-node <node_name>]
用法：srvctl start mgmtlsnr [-node <node_name>]

登錄數(shù)據(jù)庫：

[grid@prodb1 ~]$ export ORACLE_SID=-MGMTDB
[grid@prodb1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on 0 21:04:42 2019

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

 Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Automatic Storage Management and Advanced Analytics options

SQL> show parameter dump

NAME                                 TYPE                   VALUE
------------------------------------ ---------------------- ------------------------------
background_core_dump                 string                 partial
background_dump_dest                 string                 /u01/app/12.2/grid/rdbms/log
core_dump_dest                       string                 /u01/app/grid/diag/rdbms/_mgmt
                                                            db/-MGMTDB/cdump
max_dump_file_size                   string                 unlimited
shadow_core_dump                     string                 partial
user_dump_dest                       string                 /u01/app/12.2/grid/rdbms/log

SQL> select file_id,file_name from dba_data_files;

FILE_ID FILE_NAME
------- -----------------------------------------------------------------
      4 +OCR_VOTE/_MGMTDB/DATAFILE/undotbs1.259.998942293
      1 +OCR_VOTE/_MGMTDB/DATAFILE/system.258.998942257
      3 +OCR_VOTE/_MGMTDB/DATAFILE/sysaux.257.998942237

查看trc:

[grid@prodb1 ~]$ cd /u01/app/grid/diag/rdbms/_mgmtdb/
[grid@prodb1 _mgmtdb]$ cd -MGMTDB/  #直接cd會(huì)報(bào)錯(cuò)
-bash: cd: -M: invalid option
cd: usage: cd [-L|[-P [-e]]] [dir]
[grid@prodb1 _mgmtdb]$ cd ./-MGMTDB/
[grid@prodb1 -MGMTDB]$ cd trace
[grid@prodb1 trace]$ ls
-MGMTDB_aqpc_30744.trc 
 -MGMTDB_dbw0_23833.trm  -MGMTDB_m000_31720.trc  -MGMTDB_ora_1441.trm   
-MGMTDB_ora_30748.trc   -MGMTDB_rbal_3479.trm
-MGMTDB_aqpc_30744.trm 
 -MGMTDB_dbw0_24548.trc  -MGMTDB_m000_31720.trm  -MGMTDB_ora_1568.trc   
-MGMTDB_ora_30748.trm   -MGMTDB_tt00_24976.trc

清理trc:

[grid@prodb1 trace]$ adrci

ADRCI: Release 12.1.0.2.0 - Production on 0 21:11:07 2019

Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

ADR base = "/u01/app/grid"
adrci> show home
ADR Homes: 
diag/rdbms/_mgmtdb/-MGMTDB
adrci> purge -age 0
adrci> quit
[grid@prodb1 trace]$ ls
alert_-MGMTDB.log

備份數(shù)據(jù)庫：
oracle未說明需要備份該數(shù)據(jù)庫。

監(jiān)聽端口：
在12.2版本中，MGMT監(jiān)聽器默認(rèn)為1525。

空間要求：
適用于：具有外部冗余的Oracle Cluster Registry（OCR）和Grid Infrastructure Management Repository
最低：包含Grid Infrastructure Management Repository（4.5 GB + 300 MB表決文件+ 400 MB OCR）的OCR卷至少為5.2 GB，對(duì)于超過四個(gè)節(jié)點(diǎn)的集群，每個(gè)節(jié)點(diǎn)加500 MB。例如，六節(jié)點(diǎn)群集分配應(yīng)為6.2 GB。

參考：http：//docs.oracle.com/database/121/CWLIN/storage.htm#CHDDCAHD

實(shí)際安裝過程12.1.0.2總共需要約5.9G空間。