MFE TF SnapVX:取消連結 SYSCALL 傳回EQCA304E錯誤,DATA3E-00080063

Summary: 嘗試取消連結 SNAPVX 工作階段時,出現EQCA304E「取消連結返回錯誤」訊息。

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Symptoms

將 B 還原至 B 是在將 A 連結至 B 後執行。 

 

執行目標設備的取消連結,但收到以下錯誤消息。目標裝置具有作用中的還原作業。
 

EQCA304E ERROR RETURNED FROM UNLINK SYSCALL, DATA3E=00080063

 

在指定AUTO_UNLNK的終止作業期間,也可能出現相同的錯誤:
 

EQCA304E ERROR RETURNED FROM UNLINK SYSCALL, DATA3E=00080063 


此外,「終止」可能會傳回:
 

ESNP0FIE EMC SNAP API - CAN NOT TERMINATE SNAPSHOT DUE TO ACTIVE LINK
       

錯誤代碼指示依賴項阻止了取消連結操作。這通常意味著軌道仍欠設備,必須在取消連結之前解決。

x'0080063' is defined as SNAPVX_DEPENDENT_SNAPSHOTS_EXISTS


 執行 A 的建立,然後是 B 的建立,連結 A 至 B,並執行 B 的還原時,就會發生此問題。在此之後,A 至 B 的連結會失敗,而取消連結 A 至 B 或 B 至 B 會傳回相同的錯誤訊息。

 

Cause

還原是以 MODE(NOCOPY) 而非 MODE(COPY) 執行。這會產生相依快照,必須先解決此問題,才能覆蓋目標設備。

從 TimeFinder SnapVX 和 zDP 產品指南:

If the linked target is in NOCOPY mode, a cascading snapshot is referred to as a
dependent snapshot. A target device cannot be unlinked without removing dependent
snapshots. Or, the snapshots should be removed in the reverse order of creation.
 
This definition process is not a physical copy operation, but rather a manipulation of in
memory track pointers. If the link operation was done in MODE(NOCOPY), then the
target and snapshot will be sharing physical tracks until a write is performed on the
target device. If the snapshot was linked in MODE(COPY), a subsequent background
copy process will copy the snapshot data and assign these new unshared tracks to the
target.


 

Resolution

若要移除相依性,請使用 MODE(COPY) 執行 CONFIG 命令。這可以直接移除相依性,或使用 MODE(COPY) 執行還原作業,以清除從 B 到 B 的連結。

 

CONFIG(NAME(snapshotname) TARGET(UNIT(ccuu)) MODE(COPY)) 
   
  

或者,要刪除依賴項並允許 A 到 B 的連結完成,請使用:
 

 
CONFIG(NAME(snapshotname) TARGET(SYMDV#(symdv#))  -
        LOCAL(UNIT(gatekeeper)) MODE(COPY))


Affected Products

Mainframe Enablers
Article Properties
Article Number: 000166455
Article Type: Solution
Last Modified: 09 Oct 2025
Version:  3
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