Understanding the cause of INTERNAL - RSET IMMEDIATE messages in CICS regions
Article ID: 136710
Updated On:
Products
Issue/Introduction
One of the CICS regions lost the connection to the CA Datacom/DB MUF and reconnected twice. The following messages were found in the DBOCPRT of the CICS region.
08/21/19 10:39:40 DB: INTERNAL - DC00178I MUF DBSIDPR NOW DISCONNECTED
08/21/19 10:39:40 DB: INTERNAL - DC00380I TRANSACTION COMPLETED.
08/21/19 10:39:40 DB: APPL PGM - CONN CONNECT=01 TRANSID=DQIN PGMID=VPEHJN70
08/21/19 10:39:40 DB: INTERNAL - DC00181E MUF DBSIDPR FAILED RC=85 001 NOT A
08/21/19 10:39:40 DB: INTERNAL - DC00380I TRANSACTION COMPLETED.
08/21/19 10:39:43 DB: APPL PGM - CONN CONNECT=01 TRANSID=DQIN PGMID=VPEHJN70
08/21/19 10:39:43 DB: INTERNAL - DC00185I MUF DBSIDPR NOW CONNECTED
08/21/19 10:39:43 DB: INTERNAL - DC00380I TRANSACTION COMPLETED.
08/21/19 10:39:43 DB: APPL PGM - CONN RESTART=???? TRANSID=DQIN PGMID=VPEHJN70
08/21/19 10:39:43 DB: INTERNAL - DC00172I URT 0001 WILL BE AUTOMATICALLY OPENED
08/21/19 10:39:43 DB: INTERNAL - DC00171I URT 0002 NOW OPENED
08/21/19 10:39:43 DB: INTERNAL - DC00171I URT 0003 NOW OPENED
08/21/19 10:39:43 DB: INTERNAL - DC00172I URT 0005 WILL BE AUTOMATICALLY OPENED
08/21/19 10:39:43 DB: INTERNAL - DC00172I URT 0007 WILL BE AUTOMATICALLY OPENED
Environment
Release : 15.1
Component : CA DATACOM CICS SERVICES
Resolution
First, the case of this RSET IMMEDIATE command.message is fairly straightforward: It is our standard response when we can't get to a MUF for some reason to "disconnect immediate" from it and subsequently as the workload is coming in, "try" to re-establish the connection. This was successful as seen in the DC00185I MUF DBSIDPR NOW CONNECTED message
Therefore, our response was to the dropped connection, and for the cause of this, either the CICS system support team or the VTAM/network team will need to determine if there was a momentary communication issue that needs to be addressed.
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