| Name | Description | 
    
        | AD | ASM Disk AU Lock | 
    
        | AF | Advisor Framework | 
    
        | AG | Analytic Workspace Generation | 
    
        | AK | GES Deadlock Test | 
    
        | AO | MultiWriter Object Access | 
    
        | AS | Service Operations | 
    
        | AT | Alter Tablespace | 
    
        | AW | Analytic Workspace | 
    
        | BR | Backup/Restore | 
    
        | CF | Controlfile Transaction | 
    
        | CI | Cross-Instance Call Invocation | 
    
        | CL | Label Security cache | 
    
        | CM | ASM Instance Enqueue | 
    
        | CT | Block Change Tracking | 
    
        | CU | Cursor | 
    
        | DB | DbsDriver | 
    
        | DD | ASM Local Disk Group | 
    
        | DF | Datafile Online in RAC | 
    
        | DG | ASM Disk Group Modification | 
    
        | DI | GES Internal | 
    
        | DL | Direct Loader Index Creation | 
    
        | DM | Database Mount/Open | 
    
        | DN | Diskgroup number generator | 
    
        | DP | LDAP Parameter | 
    
        | DQ | ASM RBAL doorbell | 
    
        | DR | Distributed Recovery | 
    
        | DS | Database Suspend | 
    
        | DT | Default Temporary Tablespace | 
    
        | DV | Diana Versioning | 
    
        | DX | Distributed Transaction | 
    
        | E | Library Cache Lock 2 | 
    
        | FA | ASM File Access Lock | 
    
        | FB | Format Block | 
    
        | FC | Disk Group Chunk Mount | 
    
        | FD | Flashback Database | 
    
        | FG | ACD Relocation Gate Enqueue | 
    
        | FL | Flashback database log | 
    
        | FM | File Mapping | 
    
        | FR | Disk Group Recovery | 
    
        | FS | File Set / Dictionary Check | 
    
        | FT | Disk Group Redo Generation | 
    
        | FU | DBFUS | 
    
        | G | Library Cache Pin 2 | 
    
        | HD | ASM Disk Header | 
    
        | HP | Queue Page | 
    
        | HQ | Hash Queue | 
    
        | HV | Direct Loader High Water Mark | 
    
        | HW | Segment High Water Mark | 
    
        | IA | Internal | 
    
        | ID | NID | 
    
        | IL | Label Security | 
    
        | IM | Kti blr lock | 
    
        | IR | Instance Recovery | 
    
        | IS | Instance State | 
    
        | IT | In-Mem Temp Table Meta Creation | 
    
        | IV | Library Cache Invalidation | 
    
        | IZ | INSTANCE LOCK | 
    
        | JD | Job Queue Date | 
    
        | JI | Materialized View | 
    
        | JQ | Job Queue | 
    
        | JS | Job Scheduler | 
    
        | KK | Kick Instance to Switch Logs | 
    
        | KM | Scheduler | 
    
        | KP | Kupp Process Startup | 
    
        | KT | Scheduler Plan | 
    
        | L | Library Cache Lock 1 | 
    
        | MD | Materialized View Log DDL | 
    
        | MH | AQ Notification Mail Host | 
    
        | ML | AQ Notification Mail Port | 
    
        | MN | LogMiner | 
    
        | MR | Media Recovery | 
    
        | MS | Materialized View Refresh Log | 
    
        | MW | MWIN Schedule | 
    
        | N | Library Cache Pin 1 | 
    
        | OC | Outline Cache | 
    
        | OL | Outline Name | 
    
        | OQ | OLAPI Histories | 
    
        | PD | Property Lock | 
    
        | PE | Parameter | 
    
        | PF | Password File | 
    
        | PG | Global Parameter | 
    
        | PH | AQ Notification Proxy | 
    
        | PI | Remote PX Process Spawn Status | 
    
        | PL | Transportable Tablespace | 
    
        | PM | ASM PST Signalling | 
    
        | PR | Process Startup | 
    
        | PS | PX Process Reservation | 
    
        | PT | ASM Partnership and Status Table | 
    
        | PV | KSV slave startup | 
    
        | PW | Buffer Cache PreWarm | 
    
        | Q | Row Cache | 
    
        | RB | ASM Rollback Recovery | 
    
        | RF | Data Guard Broker | 
    
        | RM | GES Resource Remastering | 
    
        | RN | Redo Log Nab Computation | 
    
        | RO | Multiple Object Reuse | 
    
        | RP | Resilver / Repair | 
    
        | RS | Reclaimable Space | 
    
        | RT | Redo Thread | 
    
        | SB | LogicalStandby | 
    
        | SC | System Change Number | 
    
        | SF | AQ Notification Sender | 
    
        | SH | Active Session History Flushing | 
    
        | SI | Streams Table Instantiation | 
    
        | SK | Shrink Segment | 
    
        | SM | SMON Serialization | 
    
        | SQ | Sequence Cache | 
    
        | SR | Synchronized Replication | 
    
        | SS | Sort Segment | 
    
        | ST | Space Transaction | 
    
        | SU | SaveUndo Segment | 
    
        | SV | Sequence Ordering | 
    
        | SW | Suspend Writes | 
    
        | TA | Instance Undo | 
    
        | TB | SQL Tuning Base Existence Cache | 
    
        | TC | Tablespace Checkpoint | 
    
        | TD | KTF map table enqueue | 
    
        | TE | KTF broadcast | 
    
        | TF | Temporary File | 
    
        | TL | Log Lock | 
    
        | TM | DML | 
    
        | TO | Temp Object | 
    
        | TQ | Queue table enqueue | 
    
        | TS | Temporary Segment | 
    
        | TT | Tablespace | 
    
        | TW | Cross-Instance Transaction | 
    
        | TX | Transaction | 
    
        | UL | User-defined | 
    
        | UN | User Name | 
    
        | US | Undo Segment | 
    
        | WA | AQ Notification Watermark | 
    
        | WF | AWR Flush | 
    
        | WL | Being Written Redo Log | 
    
        | WP | AWR Purge | 
    
        | WS | LogWriter Standby | 
    
        | XH | AQ Notification No-Proxy | 
    
        | XR | Quiesce / Force Logging | 
    
        | XY | Internal Test |