What does "koh-kghu call " mean?

From: oracle_doc <nilendu_at_nilendu.com>
Date: 23 Mar 2006 18:47:18 -0800
Message-ID: <1143168438.924779.209050@v46g2000cwv.googlegroups.com>

I am getting a lot of ORA-4030 errors while UGA touches 1.8GB and freezes.

The heapdump contains information like -

line#52,033 Chunk bfef3bb4 sz= 16416 freeable "koh-kghu call " ds=0xb2be304

line#52,034                    EXTENT 2 addr=0xbfeefb7c
line#52,035       Chunk bfeefb84 sz=    16416    freeable  "koh-kghu
call  "  ds=0xb2be304
line#52,036                    EXTENT 3 addr=0xbfeebb4c

Starting from line # 52,033 to line # 275533. The "16416" is
"sz" i.e., size in bytes.

Thus 'freeable "koh-kghu call" occupies a total of 1749.5 MB ~= 1.7GB. This is consistent with the observation that PGA peaks at 1.8GB.

Calculation -

[(end_line - start line) / 2] * 16416 bytes = [(275533 - 52033) / 2] * 16416 bytes for "koh-kghu call"

If we look at the error -

ksedmp: internal or fatal error
ORA-04030: out of process memory when trying to allocate 16396 bytes (koh-kghu call ,pmuccst: adt/record)

i.e., it also has "kon-kghu call".

Thus it looks like the most memory is allocated for koh-kghu call and it fails on the same call as well. Does anyone know what is this
"kon-kghu call"?

The above calculation is validated by this part in the heapdump -

Total heap size =1835753708
FIVE LARGEST SUB HEAPS for heap name="pga heap" desc=0xaeb0300 Subheap ds=0xb2be304 name= koh-kghu call size= 1834569184 (bytes)

   owner=(nil) latch=(nil)
  Subheap ds=0xb26c6c4 name= PLS non-lib hp size= 329916    owner=(nil) latch=(nil)
  Subheap ds=0xb29f200 name= KSFD vec heap size= 107600    owner=(nil) latch=(nil)
  Subheap ds=0xb26b848 name= Alloc environm size= 19288    owner=(nil) latch=(nil)
  Subheap ds=0xb2b4294 name= koh-kghu call size= 4144    owner=(nil) latch=(nil)

Thanks in advance!
OD Received on Thu Mar 23 2006 - 20:47:18 CST