What does errno 52 (EXFULL) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: exchange full

Could be also:
Constant	Type	OS
ERROR_DUP_NAME	Win32 error	Windows
KERN_INSUFFICIENT_BUFFER_SIZE	Kern return	Mac
EBADE	errno	Linux
ENETRESET	errno	Mac
CACHE_MANAGER	BugCheck Code	Windows

Previous	Next
ENETRESET	EBADR

EXFULL

EXFULL is not ENOSPC

EXFULL is errno 52 in Solaris-compatible headers. The current Oracle errno catalog labels it Message tables full, while the illumos header retains the older comment exchange full in the convergent-error block. Both sources place it outside ordinary filesystem capacity errors.

This source difference is itself useful diagnostic context. It indicates a legacy interface vocabulary whose exact resource is defined by the producer, not a promise that free disk blocks, socket buffers, or process file descriptors are exhausted. POSIX does not define this result.

Investigate the bounded table or exchange resource

Identify the old service, driver, or compatibility API returning errno 52 and locate the table/exchange object it manages.
Capture occupancy, configured limits, and object lifetime for that resource before retrying.
Keep this result distinct from ENOSPC, ENOBUFS, and EMFILE; those errors describe other exhausted resources.

References

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