今天客戶反應說，有生產環境的CICS REGION宕機，並收集一些日誌，查看最新的console.log日誌輸出，留意到日誌存在大量的如下報錯信息：
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.
從日誌報錯來看，應該是cics region pool 空間給用滿，或者之前cics region pool定得過小，致使region pool storage 溢出，致使之後的CICS事務都不能正常給處理，因而宕機.
解決辦法：
建議將RD.stanza文件中增大MaxRegionPool值 調大到100M,然後觀察一段時間,看看故障情況是否繼續出現.
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