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imdbverify Could not lock snapshot lock file Resource temporarily unavailable and txn_checkpoint errors (Doc ID 1328634.1)

Last updated on APRIL 26, 2021

Applies to:

Oracle Communications Messaging Server - Version 7.0.0 to 7.0.4 [Release 7.0.0]
Information in this document applies to any platform.


Messages like the following are reported in the default log file:

You may also be experiencing other performance symptoms such as slow response time, timeout errors from clients, or intermittent problems connecting to the IMAP, POP, webmail, or SMTP services.


Usage has increased or possibly other load on the system and/or disk storage.


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In this Document
 txn_checkpoint took NN seconds
 Could not lock snapshot lock file
 Could not get session lock. Possibly another imdbverify is running
 Unusual IO on /var/tmp corresponding to timing of imdbverify
 Further debugging of txn_checkpoint
 Further debugging of imdbverify
 Storage or file system performance
 Patch 25 to fix bug 13371511
 Dedicated storage for mboxlist and snapshots
 Basic tuning
 Change the imdbverify schedule
 Changes in Messaging Server 7u5 (
 Changes in

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