2343482 - SUM Error: PREP_EXTRACT/PREIMP phase

During Software Update Manager (SUM) upgrade or update of system, PREP_EXTRACT/PREIMP phase terminates with the following error:

Last error code set: Single errors (code <= 8) found in logfile 'PREIMP.ELG'
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R3trans preimport and RETURN CODE in R710VPE.<SID>
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4 ETW000 > buffersync =yes
4 ETW000 > commit =1048576
4 ETW000 > importtruncated =yes
4 ETW000 R3trans was called as follows: R3trans -w /usr/sap/<SID>/SUM/abap/tmp/R710VPE.<SID> -u 1 /usr/sap/<SID>/SUM/abap/tmp/PREIMPTRANS.CTL
4 ETW000 active unconditional modes: 1
2EETW000 sap_dext called with msgnr "2":
2EETW000 ---- db call info ----
2EETW000 function: db_ntab
2EETW000 fcode: NT_RDTDESCR
2EETW000 tabname: TADIR
2EETW000 len (char): 5
2EETW000 key: TADIR
2EETW000 retcode: 2

SAP Netweaver based on AS Java

TADIR, PREP_EXTRACT/PREIMP, R710VPE, sap_dext, db_ntab, NT_RDTDESCR, tabname: TADIR, ABAP, JAVA, SUM, upgrade, update , KBA , BC-UPG-TLS-TLJ , Upgrade tools for Java , BC-UPG-PRP , Upgrade Preparation , Problem