MemoryContextAlloc: invalid request size

<p><font size="2">Our customer is reporting a database problem after they ran into a </font><br /><font size="2">disk
quota/filesystemfull situation.</font><p><font size="2">This is Postgres 7.2.x on Solaris.</font><br /><font
size="2">Thedatabase server starts without any obvious errors, but the app. Server</font><br /><font size="2">cannot
establishconnection. (It is setup to use Unix Domain Socket)</font><br /><font size="2"> </font><br /><font size="2">I
didnot have a chance to see the database-log, but we have the error-log and </font><br /><font size="2">the truss log
fromthe App. Server.</font><p><font size="2">In the error-log I see this:</font><br /><font size="2">  ...
...</font><br/><font size="2">  Connection to database failed</font><br /><font size="2">  FATAL: MemoryContextAlloc:
invalidrequest size 0</font><br /><p><font size="2">And this in the trace log:</font><br /><font size="2">...
...</font><br/><font size="2">10894:  open("/usr/lib/libresolv.so.2", O_RDONLY)       = 11</font><br /><font
size="2">10894: fstat(11, 0xFFBE9004)                           = 0</font><br /><font size="2">10894:  mmap(0xFE020000,
8192,PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 11, 0) = 0xFE020000</font><br /><font size="2">10894: 
mmap(0x00000000,303104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 11, 0) = 0xFDD20000</font><br /><font size="2">10894: 
mmap(0xFDD64000,15564, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 11, 212992) = 0xFDD64000</font><br
/><fontsize="2">10894:  mmap(0xFDD68000, 2728, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANON, -1, 0) =
0xFDD68000</font><br/><font size="2">10894:  munmap(0xFDD54000, 65536)                       = 0</font><br /><font
size="2">10894: memcntl(0xFDD20000, 33536, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0</font><br /><font size="2">10894: 
close(11)                                      = 0</font><br /><font size="2">10894:  munmap(0xFE020000,
8192)                       = 0</font><br /><font size="2">10894:  so_socket(1, 2, 0, "", 1)                       =
11</font><br/><font size="2">10894:  fstat64(11, 0xFFBE8A70)                         = 0</font><br /><font
size="2">10894: getsockopt(11, 65535, 8192, 0xFFBE8B70, 0xFFBE8B6C, 0) = 0</font><br /><font size="2">10894: 
setsockopt(11,65535, 8192, 0xFFBE8B70, 4, 0)   = 0</font><br /><font size="2">10894:  fcntl(11, F_SETFL,
0x00000080)                 = 0</font><br /><font size="2">10894:  connect(11, 0x0060EAA0, 77, 1)                  =
0</font><br/><font size="2">10894:  poll(0xFFBE89E8, 1, -1)                         = 1</font><br /><font
size="2">10894: sigaction(SIGPIPE, 0xFFBE8788, 0xFFBE8888)      = 0</font><br /><font size="2">10894:  send(11, "\0\001
(\002\0\0s y n c".., 296, 0)  = 296</font><br /><font size="2">10894:  sigaction(SIGPIPE, 0xFFBE8788, 0xFFBE8888)     
=0</font><br /><font size="2">10894:  poll(0xFFBE89E8, 1, -1)                         = 1</font><br /><font
size="2">10894: recv(11, " R\0\0\0\0 E F A T A L :".., 16384, 0) = 58</font><br /><font size="2">... ...</font><p><font
size="2">Couldyou recommend the remedy?</font><p><font size="2">Thanks in advance,</font><br /><font
size="2">Mike.</font>