SAP系统的SID变更
简单整理了SAP系统的SID变更步骤，真正作的时候需要考虑的很多，所以我觉得在每次要变更SID之前，最好写详细的Senario。而且，在作的时候也把时间都记录。这里省略了变更SID之后，在SAP系统上作的操作。
1. backup controlfile
SVRMGR> ALTER DATABASE BACKUP CONTROLFILE TO TRACE;
SVRMGR> SHUTDOWN IMMEDIATE;
modify backup control file sql script
a. CREATE CONTROLFILE REUSE DATABASE "OLD_DB_NAME" NORESETLOGS;
->CREATE CONTROLFILE SET DATABASE "NEW_DB_NAME" RESETLOGS;
b. RECOVER DATABASE;
->RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;
c.->
ALTER DATABASE OPEN;
->ALTER DATABASE OPEN RESETLOGS;
2.umount old filesystem
3. Create oracle, adm User
4.mount new filesystem
5.execute backup control file sql
6.relink
7.Link check :
(1) cd /usr/sap//SYS
# ln -s /sapmnt//global global
# ln -s /sapmnt//profile profile
(2) cd /usr/sap//SYS/exe
# ln -s /sapmnt//exe dbg
8.Check adm user environment.
.cshrc,.kshrc, .login, .profile, .dbenv_.sh,.dbenv_.csh, .sapenv_.sh.sapenv_.csh
9.Modify R/3 parameters
: startsap__, stopsap__
: DEFAULT.PFL, TEMU.PFL
: START_D_, _D ...
10.Check files (/etc/hosts, /etc/services)
11.saplicense install
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