SQL error "-601" occurred when accessing table "SMEN_BUFFC

Question

Hi Guys
I am getting the above error at tiem when i am logging on.
The actual error message in the st22 dump is
Database error text........: "SMEN_BUFH5 in R3EPT32000 type *SQLPKG already    
exists. Job=018343/EPT01/WP00" 
The termination occurred in the ABAP/4 program "SAPLSMTR_NAVIGATION_MODULES "
in                                                                          
"SMTR_STRU_PROCESS_STRUCTURE".                                               
The main program was "SAPLSMTR_NAVIGATION ". 
This seems to happen when some users log on to the system and then tries to change their password. If I stop sap and start it again, the rror goes away.
I have actually deleted the sql package with the command
DLTSQLPKG R3EPT32000\SMEN_BUFH5.
This seem to work but after a while the erro comes back again

Answer 1

Dear Christian,
at the moment in our Productive system we have hundreds of Dumps: nearly at every log on user get a DUMP with the well known message.
Analyzing develoepr trace we find following information:
C Wed Mar 14 09:54:35 2007    
C  Concurrent prepare happened for SIPID
C  Library name: R3S1132000                                                                           
C  Package name: SMEN_BUFH5
C  Statement name: "QL1YQAAAAAFC"
C  SQL Error: -601
C  *** ERROR => Error -601 in function prep_cached_op [dbsldb4.cpp  7057]
C  Library name: R3S1132000                                                                           
C  Package name: SMEN_BUFH5
C  Statement name: "QL1YQAAAAAFC" 
C  Failing statement is:                                                                               
C  , SELECT   *   FROM  R3S11DATA/"SMEN_BUFFC" WHERE  "MANDT" = ? AND  "UNAME" = ?  WITH UR           
B  ***LOG BY4=> sql error -601   performing PRE on table SMEN_BUFFC [dbtran  7009 ]                   
B  ***LOG BY0=> SMEN_BUFH5 in R3S1132000 tipo *SQLPKG esiste gi{. Job=251690/S1100/WP12 [dbtran  7009 ]
B  dbtran ERROR LOG (hdl_dbsl_error): DbSl 'PRE'                                                      
B   FHDR: {tab='SMEN_BUFFC                    ',
fcode=53, mode=2, bpb=0, dbcnt=0, crsr=1,
B          hold=0, keep=1, xfer=2, pkg=0, upto=0, init:b=0,                                           
B          init:p=0000000000000000, init:#=278, wa:p=0000000000000000, wa:#=278}                      
B  dbtran ERROR LOG (hdl_dbsl_error): DbSl 'PRE'                                                      
B   STMT:                                    
B   CRSR: {tab='SMEN_BUFFC                    ', id=-1, hold=0, prop=0x10000, max.in@0=1, fae:blk=10, 
B          con:nm='R/3', con:id=0, con:vndr=2, val=2,                                                 
B          key:1=0, key:#=6, xfer=2, xin:#=0, xout:#=0, upto=0,                                       
B          wa:p=000000800440C380, init:p=00000090D4CF4DF8, init:#=15, init:b=0}                       
Additionaly we also tried to delete only mentioned SQL package (while system was running), but without succes.
What do you think?
Giuseppe