环境:
SCOTTbook> 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
SCOTTbook> show parameter plsql
NAME TYPE VALUE
plsql_ccflags string
plsql_code_type string INTERPRETED
plsql_debug boolean FALSE
plsql_optimize_level integer 2
plsql_v2_compatibility boolean FALSE
plsql_warnings string DISABLE:ALL
SCOTTook> alter session set plsql_code_type=native ;
Session altered.
$ ls -l /dev/shm/
total 0
create or replace PROCEDURE testp2 (
P_ORG_NUM IN number,
p_result OUT varchar2,
p_seq OUT number
) AS
BEGIN
p_seq := P_ORG_NUM; p_result:='';
END;
/
create or replace package testp1
as
procedure foo;
end;
/
create or replace package body testp1 as
procedure foo is begin null; end;
end;
/
$ ls -l /dev/shm/
total 8
-rwx------ 1 oracle oinstall 432 2021-06-22 09:18:48 PESLD_book_1c38004_00dcf27d00000000
-rwx------ 1 oracle oinstall 528 2021-06-22 09:17:33 PESLD_book_1c38004_d87eef7c00000000
--//PESLD表示什么呢? PESLD – Plsql code www.pizei.comExecution Shared object manager native code Loader
--//这样编译的过程和包在/dev/shm产生了文件PESLD_book_1c38004_00dcf27d00000000,PESLD_book_1c38004_00dcf27d00000000.
2.测试：
--//退出重新登录，执行：
SCOTTbook> spid
SID SERIAL# PROCESS SERVER SPID PID P_SERIAL# C50 295 1571 23979 DEDICATED 23980 21 192 alter system kill session '295,1571' immediate;
SCOTTbook> exec testp1.foo()
PL/SQL procedure successfully completed.
$ strace -f -e open -p 23980
Process 23980 attached - interrupt to quit
open("/dev/shm/PESLD_book_1c38004_00dcf27d00000000", O_RDONLY|O_NOFOLLOW) = 8
--//你可以发现会出现调用open /dev/shm/PESLD_book_1c38004_00dcf27d00000000
--//现在删除文件。
$ rm /dev/shm/PESLD_book_1c38004_00dcf27d00000000
/bin/rm: remove regular file `/dev/shm/PESLD_book_1c38004_00dcf27d00000000'? y
SCOTTbook> exec testp1.foo()
PL/SQL procedure successfully completed.
--//OK。没有问题，因为时间句柄已经ok，你可以发现第2次执行没有页游调用open。
--//打开新的session执行：
SCOTTbook> spid
SID SERIAL# PROCESS SERVER SPID PID P_SERIAL# C50 30 3837 23998 DEDICATED 23999 26 234 alter system kill session '30,3837' immediate;
SCOTTbook> exec testp1.foo()
BEGIN testp1.foo(); END;
*
ERROR at line 1:
ORA-00600: internal error code, arguments: [pesldl01_Get_Object: shm_open failed: errno 2 errmsg No such fil], [/PESLD_book_1c38004_00dcf27d00000000], [], [], [], [], [], [], [], [], [], []
--//重新编译。
SCOTTbook> alter session set plsql_code_type=native ;
Session altered.
SCOTTbook> ALTER PACKAGE SCOTT.TESTP1 COMPILE;
Package altered.
$ ls -l /dev/shm/
total 8
-rwx------ 1 oracle oinstall 432 2021-06-22 09:38:24 PESLD_book_1c38004_00dcf27d00000000
-rwx------ 1 oracle oinstall 528 2021-06-22 09:17:33 PESLD_book_1c38004_d87eef7c00000000
SCOTTbook> exec testp1.foo()
PL/SQL procedure successfully completed.
3.链接作者说的情况我给继续测试：
variable v_result varchar2;
variable v_seq number ;
SCOTTbook> exec testp2(1,:v_result,:v_seq);
PL/SQL procedure successfully completed.
--//我估计应该不是参数plsql_code_type=native引起的情况。
--//打开新会话重新编译。
SCOTTbook> ALTER PACKAGE SCOTT.TESTP1 COMPILE;
Package altered.
$ rm -rf /dev/shm/PESLD_book_1c38004_*
variable v_result varchar2;
variable v_seq number ;
SCOTTbook> exec testp2(1,:v_result,:v_seq);
BEGIN testp2(1,:v_result,:v_seq); END;
*
ERROR at line 1:
ORA-00600: internal error code, arguments: [pesldl01_Get_Object: shm_open failed: errno 2 errmsg No such fil], [/PESLD_book_1c38004_d87eef7c00000000], [], [], [], [], [], [], [], [], [], []
--//重新建立：
create or replace PROCEDURE testp2 (
P_ORG_NUM IN number,
p_result OUT varchar2,
p_seq OUT number
) AS
BEGIN
p_seq := P_ORG_NUM; p_result:='';
END;
/
SCOTTbook> exec testp2(1,:v_result,:v_seq);
PL/SQL procedure successfully completed.
4.如果安装如上编译的包，发生异常关闭呢，继续测试？
$ ls -l /dev/shm/
total 4
-rwx------ 1 oracle oinstall 432 2021-06-22 09:53:47 PESLD_book_1c58004_f8ae607c00000000
SYSbook> shutdown abort ;
ORACLE instance shut down.
$ ls -l /dev/shm/
total 4
-rwx------ 1 oracle oinstall 432 2021-06-22 09:53:47 PESLD_book_1c58004_f8ae607c00000000
--//文件还在。
SYSbook> startup
ORACLE instance started.
Total System Global Area 643084288 bytes
Fixed Size 2255872 bytes
Variable Size 205521920 bytes
Database Buffers 427819008 bytes
Redo Buffers 7487488 bytes
Database mounted.
Database opened.
SCOTTbook> alter session set plsql_code_type=native ;
Session altered.
SCOTTbook> exec testp1.foo()
PL/SQL procedure successfully completed.
$ ls -l /dev/shm/
total 8
-rwx------ 1 oracle oinstall 432 2021-06-22 09:53:47 PESLD_book_1c58004_f8ae607c00000000
-rwx------ 1 oracle oinstall 432 2021-06-22 09:56:43 PESLD_book_1c78004_c841197c00000000
--//建立新的文件。