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Left Hand Pointer

Error Code M41

M[UMPS] by Example

Right Hand Pointer

M41, Invalid LOCK argument within a TRANSACTION

Introduced in the 1995 ANSI M[UMPS] language standard.

In the context of transaction processing, it is not allowed to release resources within a transaction, if those resources were obtained outside of the transaction in question. This restriction is necessary to allow transactions to be restartable.

When, within a transaction, a Lock command is executed that releases a name from the LOCK list that was not entered into the LOCK list within the context of the current transaction, this error will occur.

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Copyright © Standard Documents; 1977-2017 MUMPS Development Committee;
Copyright © Examples: 1995-2017 Ed de Moel;
Copyright © Annotations: 2003-2017 Jacquard Systems Research.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 29-Nov-2011, 22:30:57 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)