[20210722]sqlplus下show recycebin的小问题.txt

[20210722]sqlplus下show recycebin的小问题.txt

--//sqlplus下执行show recycebin遇到一些疑问,经过测试慢慢展开问题的探究.

1.环境:
SCOTT@test01p> @ ver1
PORT_STRING                    VERSION        BANNER                                                                               CON_ID
------------------------------ -------------- -------------------------------------------------------------------------------- ----------
IBMPC/WIN_NT64-9.1.0           12.2.0.1.0     Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production              0

SCOTT@test01p> create table tx as select * from dept ;
Table created.

SCOTT@test01p> create table ty as select * from dept ;
Table created.

2.测试:
SCOTT@test01p> show recyclebin

SCOTT@test01p> drop table tx ;
Table dropped.

SCOTT@test01p> drop table ty ;
Table dropped.

SCOTT@test01p> show recyclebin
ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME
---------------- ------------------------------ ------------ -------------------
TX               BIN$T7f14az+TMuluJgGIOXiPA==$0 TABLE        2021-07-21:20:33:43
TY               BIN$5quvB25qT7eMZtdPExTTZg==$0 TABLE        2021-07-21:20:33:45

--//OK正确.在结尾加入分号看看.
SCOTT@test01p> show recyclebin;
ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME
---------------- ------------------------------ ------------ -------------------
TX               BIN$T7f14az+TMuluJgGIOXiPA==$0 TABLE        2021-07-21:20:33:43
TY               BIN$5quvB25qT7eMZtdPExTTZg==$0 TABLE        2021-07-21:20:33:45
--//OK正确.在结尾加入空格(tab键)与分号看看.

SCOTT@test01p> show recyclebin  ;
--//显示为空,为何?

3.使用toad自带的SQL Tracker跟踪:
SELECT ORIGINAL_NAME ORIGNAME_PLUS_SHOW_RECYC,
       OBJECT_NAME OBJECTNAME_PLUS_SHOW_RECYC,TYPE OBJTYPE_PLUS_SHOW_RECYC,
       DROPTIME DROPTIME_PLUS_SHOW_RECYC
  FROM USER_RECYCLEBIN
 WHERE CAN_UNDROP    = 'YES'
   AND ORIGINAL_NAME = UPPER(:NMBIND_SHOW_OBJ)
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ORDER BY ORIGINAL_NAME,DROPTIME DESC,OBJECT_NAME;

--//为了美观,我作了格式化处理.你能够发现下划线带入参数:NMBIND_SHOW_OBJ.很明显我在分号前一个空格的状况下,
--//带入的参数为空,这样就没有显示.

SCOTT@test01p> show recyclebin  tx
ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME
---------------- ------------------------------ ------------ -------------------
TX               BIN$T7f14az+TMuluJgGIOXiPA==$0 TABLE        2021-07-21:20:33:43

SCOTT@test01p> show recyclebin    tx ;
ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME
---------------- ------------------------------ ------------ -------------------
TX               BIN$T7f14az+TMuluJgGIOXiPA==$0 TABLE        2021-07-21:20:33:43

--//你能够发现带入参数的状况下显示正确.若是你执行show recyclebin;执行的sqlplus以下:

SELECT ORIGINAL_NAME ORIGNAME_PLUS_SHOW_RECYC,
       OBJECT_NAME OBJECTNAME_PLUS_SHOW_RECYC,TYPE OBJTYPE_PLUS_SHOW_RECYC,
       DROPTIME DROPTIME_PLUS_SHOW_RECYC
  FROM USER_RECYCLEBIN
 WHERE CAN_UNDROP = 'YES'
 ORDER BY ORIGINAL_NAME,DROPTIME DESC,OBJECT_NAME

--//没有绑定变量,说明个人判断正确.

4.继续,以上测试在windows下进行,若是linux呢?

SCOTT@book> @ ver1
PORT_STRING                    VERSION        BANNER
------------------------------ -------------- --------------------------------------------------------------------------------
x86_64/Linux 2.4.xx            11.2.0.4.0     Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

SCOTT@book> show recyclebin;
ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME
---------------- ------------------------------ ------------ -------------------
TY               BIN$x5jlVlgTFx3gU05kqMAqNg==$0 TABLE        2021-07-21:09:20:02

SCOTT@book> show recyclebin ;
ORA-24550: signal received: [si_signo=11] [si_errno=0] [si_code=1] [si_int=33260000] [si_ptr=0x1fb81e0] [si_addr=(nil)]
kpedbg_dmp_stack()+362
<-kpeDbgCrash()+192
<-kpeDbgSignalHandler()+119
<-skgesig_sigactionHandler()+218
<-__sighandler()
<-afiwsk()+544
<-afinsym()+80
<-afishosop()+1930
<-afisho()+516
<-aficmd()+2714
<-aficfd()+2669
<-aficdr()+138
<-afidrv()+4237
<-frame_dummy()+123
<-__libc_start_main()+244
--//注:我作了折行处理，否则太长了。
rlwrap: warning: sqlplus crashed, killed by SIGSEGV.
rlwrap itself has not crashed, but for transparency,
it will now kill itself (without dumping core) with the same signal

warnings can be silenced by the --no-warnings (-n) option
Segmentation fault
--//在分号前有空格的状况下,链接进程直接crash.
--//使用http://orafun.info/stack/查询，拷贝和粘贴以下：
kpedbg_dmp_stack()+362
<-kpeDbgCrash()+192
<-kpeDbgSignalHandler()+119
<-skgesig_sigactionHandler()+218
<-__sighandler()
<-afiwsk()+544
<-afinsym()+80
<-afishosop()+1930
<-afisho()+516
<-aficmd()+2714
<-aficfd()+2669
<-aficdr()+138
<-afidrv()+4237
<-frame_dummy()+123
<-__libc_start_main()+244

Parsed stack:
Discovered stack type: short stack

Parsed short stack:
kpedbg_dmp_stack()+362             kernel programmatic interface  [partial hit for: kp ]
kpeDbgCrash()+192                  kernel programmatic interface  [partial hit for: kp ]
kpeDbgSignalHandler()+119          kernel programmatic interface  [partial hit for: kp ]
skgesig_sigactionHandler()+218     operating system dependent kernel generic  [partial hit for: skg ]
__sighandler()                      (?)  [partial hit for:  ]
afiwsk()+544                        (?)  [partial hit for:  ]
afinsym()+80                        (?)  [partial hit for:  ]
afishosop()+1930                    (?)  [partial hit for:  ]
afisho()+516                        (?)  [partial hit for:  ]
aficmd()+2714                       (?)  [partial hit for:  ]
aficfd()+2669                       (?)  [partial hit for:  ]
aficdr()+138                        (?)  [partial hit for:  ]
afidrv()+4237                       (?)  [partial hit for:  ]
frame_dummy()+123                   (?)  [partial hit for:  ]
__libc_start_main()+244             (?)  [partial hit for:  ]

$ oerr ora 24550
24550, 00000, "unhandled signal #%ld received. %s"
// *Cause:   Serious error: signal received
// *Action:  Refer to the platform-specific signal code, and see if the
//           application code caused the error. Otherwise, record
//           all error state and notify Oracle Support Services.

5.继续登陆测试:
SCOTT@book> @ spid

       SID    SERIAL# PROCESS                  SERVER    SPID       PID  P_SERIAL# C50
---------- ---------- ------------------------ --------- ------ ------- ---------- --------------------------------------------------
       295          9 17218                    DEDICATED 17219       21          5 alter system kill session '295,9' immediate;

$ strace -f -p 17219
Process 17219 attached - interrupt to quit
read(7, "", 8208)                       = 0
close(10)                               = 0
close(7)                                = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 22996}, ru_stime={0, 14997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825693747
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825693747
close(4)                                = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825693747
open("/u01/app/oracle/product/11.2.0.4/dbhome_1/rdbms/mesg/diaus.msb", O_RDONLY) = 4
fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
lseek(4, 0, SEEK_SET)                   = 0
read(4, "\25\23\"\1\23\3\t\t\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 256) = 256
lseek(4, 512, SEEK_SET)                 = 512
read(4, "\371\311\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 512) = 512
lseek(4, 1024, SEEK_SET)                = 1024
read(4, "\210\273\353\273\363\273\373\273\4\274\16\274\26\274!\274)\2741\274<\274G\274T\274_\274k\274t\274"..., 192) = 192
stat("/u01/app/oracle", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getrlimit(RLIMIT_NOFILE, {rlim_cur=64*1024, rlim_max=64*1024}) = 0
getrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM_INFINITY, rlim_max=RLIM_INFINITY}) = 0
stat("/u01/app/oracle/diag", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/trace", {st_mode=S_IFDIR|0750, st_size=5337088, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/alert", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/incident", {st_mode=S_IFDIR|0750, st_size=12288, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata_pv", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata_dgif", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/hm", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/ir", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/incpkg", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/sweep", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/lck", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/cdump", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/stage", {st_mode=S_IFDIR|0750, st_size=32768, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/u01/app/oracle/diag/rdbms/book/book/metadata/ADR_CONTROL.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata/ADR_CONTROL.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
lstat("/u01/app/oracle/diag/rdbms/book/book/metadata/ADR_INVALIDATION.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata/ADR_INVALIDATION.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
lstat("/u01/app/oracle/diag/rdbms/book/book/metadata/INC_METER_IMPT_DEF.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata/INC_METER_IMPT_DEF.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
lstat("/u01/app/oracle/diag/rdbms/book/book/metadata/INC_METER_PK_IMPTS.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata/INC_METER_PK_IMPTS.ams", {st_mode=S_IFREG|0640, st_size=65536, ...}) = 0
lstat("/u01/app/oracle/diag/rdbms/book/book/metadata/INCIDENT.ams", {st_mode=S_IFREG|0640, st_size=475136, ...}) = 0
stat("/u01/app/oracle/diag/rdbms/book/book/metadata/INCIDENT.ams", {st_mode=S_IFREG|0640, st_size=475136, ...}) = 0
shmdt(0x60000000)                       = 0
shmdt(0x60c00000)                       = 0
shmdt(0x86800000)                       = 0
munmap(0x7fcda79d2000, 143360)          = 0
munmap(0x7fcda79f5000, 143360)          = 0
munmap(0x7fcda7a18000, 143360)          = 0
close(4)                                = 0
munmap(0x7fcda7b7b000, 262144)          = 0
munmap(0x7fcda75ba000, 524288)          = 0
munmap(0x7fcda74ba000, 1048576)         = 0
munmap(0x7fcda763c000, 524288)          = 0
close(6)                                = 0
rt_sigprocmask(SIG_BLOCK, [ALRM], NULL, 8) = 0
rt_sigaction(SIGALRM, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x7edfb0c, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [ALRM], NULL, 8) = 0
rt_sigaction(SIGILL, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGTRAP, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGABRT, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGFPE, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGBUS, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGSEGV, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGSYS, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGXCPU, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGXFSZ, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48fd6, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_STACK|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGTERM, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x1, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGHUP, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x1, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGPIPE, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x7edfb0c, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGPIPE, {0x7edfb0c, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {SIG_DFL, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGVTALRM, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x1, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGPROF, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x1, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGUSR1, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x1, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
rt_sigaction(SIGUSR2, {SIG_DFL, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, {0x6b48b00, ~[ILL ABRT BUS FPE KILL SEGV USR2 STOP XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x379a00eca0}, 8) = 0
close(3)                                = 0
munmap(0x7fcda7cbb000, 2116176)         = 0
munmap(0x7fcda7a3b000, 1310720)         = 0
exit_group(0)                           = ?
Process 17219 detached

--//若是正常执行跟踪看到的是这个:
$ strace -f -p 17236
Process 17236 attached - interrupt to quit
read(7, "\2\t\0\0\6\0\0\0\0\0\21i\32\376\377\377\377\377\377\377\377\1\0\0\0\0\0\0\0\2\0\0"..., 8208) = 521
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705565
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705565
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705565
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705565
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705565
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705566
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705566
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 15997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705566
write(10, "\2\302\0\0\6\0\0\0\0\0\20\27\0\0\0oh\241\271\24\37\270gC\33\240\301\32#\30\246x"..., 706) = 706
read(7, "\0\25\0\0\6\0\0\0\0\0\3\5\34\3\0\0\0\310\0\0\0", 8208) = 21
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705566
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 21996}, ru_stime={0, 16997}, ...}) = 0
times({tms_utime=2, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 1825705566
write(10, "\0\254\0\0\6\0\0\0\0\0\4\1\0\0\0\32\0\1\1\0\0\0{\5\0\0\0\0\3\0\0\0"..., 172) = 172
read(7,

--//sqlplus下使用show recycebin给维护者埋了一个不小的坑.浪费一个上午的时间定位这个问题.
--//在linux下太难定位了,直接crash,真心没想到问题出在这个空格+分号上.
--//若是不在windows下测试,没法定位这个问题,不知道为何windows下的oracle数据库链接进程为何不会crash,也许linux与windows
--//有一些不一样.windows使用线程,而linux下使用进程.