3286366 - Error: Object is already locked for a database operation during upgrade using SPAM /SAINT

SPAM/SAINT upgrade gets stuck in DDIC_ACTIVATION or IMPORT_PROPER phase with below symptoms.

Log File DSXXXXX.<SID> contains below error lines:

Update fails (mode flag   to F in DDXTT. Table: <table name>)
Result   <table name>:    Action: CRE      Mode flag: F    Internal SUBRC: 0
-> <table name>            - - - <server>_11_7140  <timestamp> - - - -  
Update fails (mode flag   to A in DDXTT. Table: <table1>)
Update fails (mode flag   to A in DDXTT. Table: <table2>)
Update fails (mode flag   to A in DDXTT. Table: <table3>)

Log File PXXXXXX.<SID> contains below error message:

Request: Convert <table name> (DDIC/dd.mm.yy/mm:ss)
Object is already locked for a database operation

• SPAM/SAINT
• SAP NetWeaver ABAP

SPAM, SAINT, import_proper, Object is already locked for a database operation, import steps not specific to transport request, Ended with errors , KBA , BC-UPG-ADDON , Upgrade Add-On Components , Problem