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FATAL EVENT!!! : Internal Subsystem failure: 'MT' Exceeding max # of pages

Question & Answer


Question

You receive Informix error - Exceeding max # of pages (Actual 41, Allowed 40) that can be physically logged in a critical section while critical section blocking is active.

Answer

Although you may receive and assertion Failure. This is only an assert warning and it has not crashed your IDS server. You can avoid this warning by either increasing the size of your physical log or improving your checkpoint performance. Your checkpoints are blocking and the I/O can not complete in a reasonable amount of time before your physical log has to much activity.

See link below on how to set the optimal physical logsize.

The above is a possible work-around. Since the document has been written there is an APAR identified which is provided below under APAR IT00683.

[{"Product":{"code":"SSGU8G","label":"Informix Servers"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"--","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF022","label":"OS X"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"12.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
16 June 2018

UID

swg21651433