访谈录:阿里妈妈

(注:DB2 II 已经改名为Websphere II)

在使用 II4O时，创建Wrapper, user mapping都没问题，但是，当创建nickname时，DB2 crash。

在db2diag.log 中，有如下信息:

2005-03-13-14.22.36.412133+480 E7747G606 LEVEL: SeverePID : 19883 TID : 3007177376 PROC : db2agent(SAMPLE)INSTANCE: db2inst1 NODE : 000 DB : SAMPLEAPPHDL : 0-14 APPID: GAC80471.NE04.00F483062900FUNCTION: DB2 UDB, oper system services, sqloEDUCodeTrapHandler,probe:10MESSAGE : ADM0503C An unexpected internal processing error has occurred. ALL DB2 PROCESSES ASSOCIATED WITH THIS INSTANCE HAVE BEEN SHUTDOWN. Diagnostic information has been recorded. Contact IBM Support for further assistance....2005-03-13-14.22.36.421935+480 I16005G624 LEVEL: SeverePID : 19883 TID : 3007177376 PROC : db2agent(SAMPLE)INSTANCE: db2inst1 NODE : 000 DB : SAMPLEAPPHDL : 0-14 APPID: GAC80471.NE04.00F483062900MESSAGE : RDS UCINTFC: pStatementText =DATA #1 : Hexdump, 59 bytes0xB33849E0 : 4352 4541 5445 204E 4943 4B4E 414D 4520 CREATE NICKNAME0xB33849F0 : 4442 3249 4E53 5431 2E4F 5241 4C4F 4341 DB2INST1.ORALOCA0xB3384A00 : 4C20 464F 5220 5453 4831 2E44 4232 494E L FOR TSH1.DB2IN0xB3384A10 : 5354 312E 224C 4F43 414C 22 ST1."LOCAL"...2005-03-13-14.22.36.476913+480 I39423G431 LEVEL: SeverePID : 19824 TID : 3007177376 PROC : db2tcpcmINSTANCE: db2inst1 NODE : 000FUNCTION: DB2 UDB, oper system services, sqloEDUSIGCHLDHandler, probe:50DATA #1 : String, 158 bytesDetected the death of an EDU with process id 19883The signal number that terminated this process was 11Look for trap files (t19883.*) in the dump directory

检查trap文件， t19883.000, 在 call stack，会发现:

-FRAME-- --CODE-- --LOCATION--BFFE8E70 83C4286A 0x0083 + A_SHAFinalCommon (/opt/IBM/db2/V8.1/lib/libdb2e.so.1)BFFE8F00 8B55E48D 0x00ae + A_X931RandomUpdate (/home/oracle/OraHome1/lib/libclntsh.so.9.0)BFFE8F60 83C40CEB 0x00d0 + ztcrseed3 (/home/oracle/OraHome1/lib/libclntsh.so.9.0)

这是DB2 II V8.2 和 Oracle 9i/10g 的一个兼容性问题.

如果是ORACLE 9i Workaround:

1) Back up your $ORACLE_HOME/lib/libclntsh.so and $ORACLE_HOME/bin/genclntsh 2) Add '-Wl,-Bsymbolic' to the link line of $ORACLE_HOME/bin/genclntsh: LD="gcc -shared -Wl,-relax -L${ORACLE_HOME}/lib -Wl,-Bsymbolic" # shared library link command 3) Run genclntsh to create libclntsh.so 4) Execute djxlinkOracle 5) Stop and Start the instance

如果是ORACLE 10g Workaround:

1) back up $ORACLE_HOME/bin/genclntsh, $ORACLE_HOME/lib/libclntsh.so.10.1, $ORACLE_HOME/lib32/libclntsh.so.10.1 2) cd $ORACLE_HOME/lib; mv libnnz10.so libnnz10.so.orig (so libnnz10.so not exist in lib) 3) cd $ORACLE_HOME/bin; modify the script genclntsh: a). Add "-Wl, -Bsymbolic" to linker line, .... make sure there is no spaces between the comma and -B. ex. LD="gcc -shared -Wl,-relax -L${ORACLE_HOME}/lib -Wl,-Bsymbolic" # shared library link command b) Change libnnz10.so ==> libnnz10.a in following line * -r ${OLIB}/libnnz10.so * && LNZ="-lnnz10

(T114)