今天客户反应说，有生产环境的CICS REGION宕机，并收集一些日志，查看最新的console.log日志输出，留意到日志存在大量的如下报错信息：
ERZ057034I/0057 06/20/18 09:43:53.902830375 CICSGDIC 31064156/0001 : Previous console file is ** /var/cics_regions/CICSGDIC/console.000028 **
ERZ010135I/0057 06/20/18 09:43:53.903028062 CICSGDIC 31064156/0001 : CICS region ‘CICSGDIC’ is being started with locale categories ‘en_US en_US en_US en_US en_US en_US’
ERZ048002I/0202 06/20/18 09:43:53.901212742 CICSGDIC 52035664/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048002I/0202 06/20/18 09:43:53.899373656 CICSGDIC 17629370/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048002I/0202 06/20/18 09:43:53.904713382 CICSGDIC 17629370/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048002I/0202 06/20/18 09:43:53.904870750 CICSGDIC 17629370/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048014I/0201 06/20/18 09:43:53.905173318 CICSGDIC 17629370/0001 : Out of CICS region pool storage.
ERZ048002I/0202 06/20/18 09:43:53.906450562 CICSGDIC 48693276/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048002I/0202 06/20/18 09:43:53.916179687 CICSGDIC 47775810/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048002I/0202 06/20/18 09:43:53.916352750 CICSGDIC 47775810/0001 : CICS is under stress. CICS is short on Run Time Support storage
ERZ048014I/0201 06/20/18 09:43:53.916652283 CICSGDIC 47775810/0001 : Out of CICS region pool storage.
从日志报错来看，应该是cics region pool 空间给用满，或者之前cics region pool定得过小，致使region pool storage 溢出，致使之后的CICS事务都不能正常给处理，因而宕机.
解决办法：
建议将RD.stanza文件中增大MaxRegionPool值 调大到100M,然后观察一段时间,看看故障情况是否继续出现.
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