在Oracle社区可以搜索到这样的问题：
How to change oswatcher retention when running under TFA
但很遗憾该问题目前也没有给出确切答复。
其实提问者已经给出了修改方法：
tfactl stop oswbb
tfactl start oswbb 15 168
只是不确认这样的修改在下次主机重启后是否还生效？下面来验证一下：
首先，默认的osw采集间隔是30s，保存时间为48h：
[grid@db01 ~]$ ps -ef|grep osw
grid 8378 1 0 Jun27 ? 00:01:11 /bin/sh ./OSWatcher.sh 30 48 NONE /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 8961 8378 0 Jun27 ? 00:00:27 /bin/sh ./OSWatcherFM.sh 48 /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 11868 11846 0 23:34 pts/0 00:00:00 grep --color=auto osw
我们将其修改为采集间隔15s，保存时间为168h(也就是7天)：
tfactl stop oswbb
tfactl start oswbb 15 168
[grid@db01 ~]$ tfactl stop oswbb
Stopped OSWatcher
[grid@db01 ~]$ tfactl start oswbb 15 168
Starting OSWatcher
[grid@db01 ~]$ ps -ef|grep osw
grid 12123 1 0 23:34 pts/0 00:00:00 /bin/sh ./OSWatcher.sh 15 168 NONE /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 12152 11846 0 23:34 pts/0 00:00:00 grep --color=auto osw
[grid@db01 ~]$ ps -ef|grep osw
grid 12123 1 0 23:34 pts/0 00:00:00 /bin/sh ./OSWatcher.sh 15 168 NONE /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 12241 12123 0 23:34 pts/0 00:00:00 /bin/sh ./OSWatcherFM.sh 168 /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 12346 11846 0 23:34 pts/0 00:00:00 grep --color=auto osw
下面我们将主机重启，验证是否重启后还生效：
[root@db01 ~]# reboot
[grid@db01 ~]$ uptime
23:47:45 up 9 min, 1 user, load average: 0.45, 0.86, 0.69
[grid@db01 ~]$ ps -ef|grep osw
grid 5976 5940 0 23:47 pts/0 00:00:00 grep --color=auto osw
遗憾的看到，重启后osw压根儿都没有自启动，更别提保留什么配置了..
查询下tfactl toolstatus信息如下：
[grid@db01 ~]$ tfactl toolstatus
.------------------------------------------------------------------.
| TOOLS STATUS - HOST : db01 |
+----------------------+--------------+--------------+-------------+
| Tool Type | Tool | Version | Status |
+----------------------+--------------+--------------+-------------+
| Development Tools | orachk | 19.3.0.0.0 | DEPLOYED |
| | oratop | 14.1.2 | DEPLOYED |
+----------------------+--------------+--------------+-------------+
| Support Tools Bundle | darda | 2.10.0.R6036 | DEPLOYED |
| | oswbb | 8.3.2 | NOT RUNNING |
| | prw | 12.1.13.11.4 | NOT RUNNING |
+----------------------+--------------+--------------+-------------+
| TFA Utilities | alertsummary | 19.3.0.0.0 | DEPLOYED |
| | calog | 19.3.0.0.0 | DEPLOYED |
| | dbcheck | 18.3.0.0.0 | DEPLOYED |
| | dbglevel | 19.3.0.0.0 | DEPLOYED |
| | grep | 19.3.0.0.0 | DEPLOYED |
| | history | 19.3.0.0.0 | DEPLOYED |
| | ls | 19.3.0.0.0 | DEPLOYED |
| | managelogs | 19.3.0.0.0 | DEPLOYED |
| | menu | 19.3.0.0.0 | DEPLOYED |
| | param | 19.3.0.0.0 | DEPLOYED |
| | ps | 19.3.0.0.0 | DEPLOYED |
| | pstack | 19.3.0.0.0 | DEPLOYED |
| | summary | 19.3.0.0.0 | DEPLOYED |
| | tail | 19.3.0.0.0 | DEPLOYED |
| | triage | 19.3.0.0.0 | DEPLOYED |
| | vi | 19.3.0.0.0 | DEPLOYED |
'----------------------+--------------+--------------+-------------'
Note :-
DEPLOYED : Installed and Available - To be configured or run interactively.
NOT RUNNING : Configured and Available - Currently turned off interactively.
RUNNING : Configured and Available.
[grid@db01 ~]$
发现其中oswbb状态是“NOT RUNNING”，手工启动oswbb不加参数，发现已经是之前改过的配置：
[grid@db01 ~]$ tfactl start oswbb
Starting OSWatcher
[grid@db01 ~]$ ps -ef|grep osw
grid 8671 1 0 00:07 pts/0 00:00:00 /bin/sh ./OSWatcher.sh 15 168 NONE /opt/app/grid/oracle.ahf/data/repository/suptools/db01/oswbb/grid/archive
grid 8700 5940 0 00:07 pts/0 00:00:00 grep --color=auto osw
看来重启配置虽然不会丢失，但是oswbb没有自启动，需要手工启动。