Hi,
I have a monothread C++ process running on Solaris 2.8 and Oracle 8.1.6.
Access to BD is implemented via ProC:
EXEC SQL CONNECT :pc_nombre_fi
IDENTIFIED BY :pc_passwd_fi;
So, I have my process and an oracle child process:
root#m1cc1:>ps -fea | grep 29839
usu *29839* 1072 1 11:38:19 ? 36:42 ./serv 48
oracle 1352 *29839 *0 11:38:42 ? 1:06 oracleorac
(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
My problem is that sometimes (sporadicly) the oracle child process dies
and therefore muy process gets a SIGPIPE signal a bit later, when it has
to access BD for select, etc...
I haven't found why the oracle process dies and I don't find any
reason/explanation either. There is no corefile generated. There is no
traces either in oracle tracefiles or in oracle alert.
In this situation, I modified my SIGPIPE handler in order to reconnect
to BD again, but then my process crashes and a corefile is generated.
Next, I'm showing you the corefile debugged with dbx, where the SIGPIPE
signal can be appreciated:
1.- Oracle dies
2.- My process attempts to access BD (line 54)
3.- SIGIPIE is raised (since there is no longer oracle process ) (line 33 )
4.- SIGPIPE handler (line 32)
5.- Attempting to reconnect.(line 31)
*[31] BDS_srv_fin(0xffbea26e, 0x0, 0x0, 0x0, 0x2, 0x90a10), at 0xaf950*
- [32] tpcamain_trataSIGPIPE(0xd, 0x0, 0xffbea3c0, 0x0, 0x21bbc,
0xfdd04e0c), at 0x90aac*
- [33] sslsshandler(0xd, 0x0, 0xffbea3c0, 0xfe6b801c, 0x0, 0x0), at
0xfdd04f80*
[34] MakeUser(0xd, 0x0, 0xffbea3c0, 0x3e9a80, 0x21698, 0xfdb3e168), at
0xfe69ae94
[35] sntpwrite(0x3f82a8, 0x3f87ac, 0x3f7c8c, 0x3fb836, 0xffbea9c4,
0x3e6764), at 0xfdb3e168
[36] ntpwr(0x3f7c48, 0x0, 0x301b98, 0xfdddeb4c, 0x3011f8, 0x3f82a8),
at 0xfdb3b6b4
[37] nspsend(0x3f7a60, 0x302718, 0x301a60, 0x3f7bf8, 0x0, 0x0), at
0xfd9fee80
[38] nsdofls(0x301a60, 0x3f7a60, 0xfdddeb4c, 0x8, 0x301b98, 0x3011f8),
at 0xfd9eaaa0
[39] nsdo(0x3f0008, 0x3f00c0, 0x302718, 0x0, 0x0, 0x3012f0), at 0xfd9e7f14
[40] nioqrc(0xc27, 0x1, 0x3011f8, 0x1, 0x0, 0xfdddeb4c), at 0xfda6a2b8
[41] ttcdrv(0x3e9a80, 0x3e66c4, 0x0, 0x0, 0x3e9d66, 0x3e9d64), at
0xfdb67a9c
[42] nioqwa(0x3e668c, 0x0, 0xfdb675fc, 0x3e9a80, 0x3e6610, 0x0), at
0xfda72964
[43] upirtrc(0x3e8c9c, 0x0, 0x0, 0x3e668c, 0x3e5f7c, 0x3e6764), at
0xfd90abd0
[44] kpurcsc(0x3e6764, 0xffbec0da, 0x3e65ac, 0x3e9a80, 0x3ea5bc,
0xfdb69fd4), at 0xfd94f46c
[45] kpuexecv8(0x0, 0x3eadbc, 0x46532c, 0x3e99cc, 0x3e8c9c,
0xfdddeb4c), at 0xfd9a5a08
[46] kpuexec(0x1, 0x4652e4, 0x202, 0x0, 0x0, 0x3e65e8), at 0xfd9a7654
[47] OCIStmtExecute(0x3e6764, 0x4652e4, 0x3e608c, 0x1, 0x0, 0x0), at
0xfd95dc1c
[48] sqlcucExecute(0x302a08, 0xfde08298, 0x1, 0x0, 0x0, 0x0), at
0xfd8dde7c
[49] sqlall(0xfde08298, 0x1, 0x4821f4, 0x1, 0x4, 0x1), at 0xfd8cce18
[50] sqlatm(0xfde08298, 0xfddb6898, 0x4, 0x1, 0x1, 0x4), at 0xfd8d4970
[51] sqlnst(0xfddb6898, 0xffbec970, 0xffbec970, 0x1, 0xfde08298,
0x4a82d8), at 0xfd8be7a4
[52] sqlcmex(0x0, 0x4a82d8, 0xffbec970, 0xfec50cf4, 0xfddb6898,
0xfdddeb4c), at 0xfd8a75b4
[53] sqlcxt(0x0, 0xfec50d10, 0xffbec970, 0xfec50cf4, 0xfe6be8a0, 0x0),
at 0xfd8a79f8
[54] *BDInformeAlarmas_cuentaInformesAlarpex(cod_sscc = 50, num_sec =
13823), at 0xfe8b0c70*
[55] ActuaWeb_RealizaEnvio(0xffbee358, 0x7, 0xffbee0b4, 0xffffffff,
0x2, 0xffbee359), at 0x5ad0c
[56] ActuaWeb_EnviaPanelesWeb(0x32, 0x9a, 0x21a640, 0x6, 0x2,
0x21a63e), at 0x5a9a4
[57] orden_O_panelweb(0xffbef680, 0x21a63e, 0x0, 0x4, 0xfef89870,
0x0), at 0x8bd84
[58] tpca_msg_o_llega_orden_o(0x21a63e, 0x1ff, 0x10, 0x1a97c4, 0x0,
0x0), at 0x8c328
[59] mensaje_eoc(0x21a624, 0x301868, 0x0, 0x0, 0x0, 0x0), at 0x90844
[60] leer_mensaje(0xa, 0xc8, 0xa, 0xfe034e38, 0xfe6bb1dc, 0xffffffff),
at 0x91fc8
[61] DRV_Ejecutar(0x0, 0xa, 0xfe02f8a8, 0xffbef888, 0xffbef908,
0xffbef738), at 0xfe00bc70
[62] LIBSGE_DRV_CicloMsj(0xfe036dc4, 0xffbef888, 0xfe02f8a8, 0xf4240,
0xfe03162c, 0xfe031618), at 0xfe00b324
[63] main(0x2, 0xffbefb04, 0xffbefb10, 0x19b800, 0x0, 0x0), at 0x9259c
(/opt/SUNWspro/bin/../WS5.0/bin/sparcv9/dbx)
+ Do you know what happens?
+ Any reason about the oracle process dead?
- An oracle bug?
+ How can I analyse this behaviour in detail? ( It's difficult to
anlayse because it ocurrs sporadicly)
+ Is it possible to get recovered from this abnormal situation? (I tried
to reconnect but my process crashes)
Any clue will be appreciated.
Thank you very much.
Received on Tue Mar 06 2007 - 02:15:08 CST
