ORA-04020: Deadlock Detected While Trying To Lock Object 267 Logging into Database (Doc ID 2627385.1)

Last updated on JULY 20, 2024

Applies to:

Symptoms

• User not able to login the database due to the error(ORA-04020: deadlock detected while trying to lock object XXX
• Call Stack per hanganalyze report:
  'library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock'<='library cache lock' (cycle)

  ksedsts <- ksdxfstk <- ksdxcb <- sspuser <- __sighandler
  <- thread_wait <- sskgpwwait <- skgpwwait <- ksliwat <- kslwaitctx
  <- ksfwaitctx <- kglLockWait <- kgllkal <- kglLock <- kglget
  <- kziasfc <- kpolnb <- kpoauth <- opiodr <- ttcpip
  <- opitsk <- opiino <- opiodr <- opidrv <- sou2o
  <- opimai_real <- ssthrdmain <- main

    
  
  

Changes

 Database schema refreshed using EXPDP/IMPDP from another database

Cause

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