OracleGoldenGate版本升級時的注意點
也就是說：停止ogghome下的所有進程：extract（包括抽取和傳輸），replicat（復制），server（在目的端的寫入trail file的進程），mgr進程
其中，server進程可能容易被忽略掉。因為其他三類的進程（extract和replicat和mgr）都能用命令stop掉。
在本案例中，進行的是OGG目的端的升級，恰恰此時server進程被調度起來，導致tar -xvf ggs_AIX_ppc_ora11g_64bit.tar 報錯：
oracle@hosta:/home/oracle/ggs$ tar -xvf ggs_AIX_ppc_ora11g_64bit.tar
x .
x ./mgr, 5176606 bytes, 10111 media blocks.
x ./ggsci, 6273278 bytes, 12253 media blocks.
x ./ggcmd, 3087685 bytes, 6031 media blocks.
x ./ggMessage.dat, 1334816 bytes, 2608 media blocks.
x ./help.txt, 178647 bytes, 349 media blocks.
x ./tcperrs, 759 bytes, 2 media blocks.
x ./bcrypt.txt, 1725 bytes, 4 media blocks.
x ./libxml2.txt, 1668 bytes, 4 media blocks.
x ./zlib.txt, 1476 bytes, 3 media blocks.
x ./freeBSD.txt, 1968 bytes, 4 media blocks.
x ./notices.txt, 213535 bytes, 418 media blocks.
tar: 0511-188 Cannot create ./libxerces-c.a: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libicui18n38.a: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libicuuc38.a: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libicudata38.a: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libantlr3c.so: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libggrepo.a: Cannot open or remove a file containing a running program.
tar: 0511-188 Cannot create ./libgglog.a: Cannot open or remove a file containing a running program.
x ./dirjar
省略部分
tar: 0511-188 Cannot create ./libdb-5.2.so: Cannot open or remove a file containing a running program.
省略部分
tar: 0511-188 Cannot create ./server: Cannot open or remove a file containing a running program.
省略部分
tar -xvf ggs_AIX_ppc_ora11g_64bit.tar 報錯歸報錯，但是能執行完成，只是OGG的新版本的個別程序文件（binary）無法覆蓋，進而導致新版本OGG無法登陸，如下：
oracle@hosta:/home/oracle/ggs$
oracle@hosta:/home/oracle/ggs$
oracle@hosta:/home/oracle/ggs$
oracle@hosta:/home/oracle/ggs$ ggsci
exec(): 0509-036 Cannot load program ggsci because of the following errors:
rtld: 0712-001 Symbol _MSG_ERR_COLUMN_BUFFER_OVERFLOW__FP14CSourceContextiT2Q2_15CMessageFactory18MessageDisposition was referenced
from module ggsci(), but a runtime definition
of the symbol was not found.
rtld: 0712-002 fatal error: exiting.
oracle@hosta:/home/oracle/ggs$
基於此種問題，我對How To Upgrade Goldengate From 11.2.1.x to 11.2.1.y for Oracle Database進行了完善，完善後的升級步驟如下：
1. Download the latest OGG v11.2.1.y version provided by OGG Support team.
2. Stop the OGG processes on the existing OGG v11.2.1.x home including the manager，and exit all GGSCI sessions，
並使用ps -ef | grep ggs 命令確認$OGG_HOME下沒有任何進程在運行。(注意:我之所以grep ggs是因為我的$OGG_HOME的路徑中包括ggs)--->這是我加的
3. Take a backup of the existing OGG home
4. Unzip and untar the new build on top of the existing OGG home. This will overwrite the binaries，
確認如下問題：
4.1 在tar -xvf的輸出日志中，不包括任何的“Cannot open or remove a file containing a running program.” --->這是我加的
4.2 進入ggsci命令提示符，確認ggsci能正常進入，並確認$OGG_HOME已經升級到新的ogg版本。 --->這是我加的
5-7步省略，請參考該mos文章
以下步驟照抄該mos文章，對以下步驟，我並沒有任何的修改。
8. If using DDL replication steps 9 to 14 to needs to be followed. If using only DML replication then skip steps 9 to 14
9. Stop doing DDL changes on the source db and run the ddl_disable script as sysdba to disable the OGG ddl trigger
10. Disconnect all sessions that ever issued DDL. Otherwise the database might generate ORA* errors
11. Run the ddl_setup script as sysdba. You will be prompted for the name of the Oracle GoldenGate
DDL schema.
12. Run the role_setupscript to recreate the Oracle GoldenGate DDL role.
13. Grant the role that you created to all Oracle GoldenGate users under which the
following Oracle GoldenGate processes run:Extract, Replicat, GGSCI, and Manager.
You might need to make multiple grants ifthe processes have different user names.
14. Run the ddl_enable.sqlscript to enable the DDL trigger.
15. Start the OGG process back
16. Resume doing DDL changes to the db.
