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ADDMSG

Issues console messages (ANR, ANE, and so on) to the trace file

Valuable for correlating server messages to trace messages and preserving the timing for when each was issued

AF

Displays information about user data stored on sequential media devices

Used to diagnose problems reading or writing user files to sequential media volumes

This is an aggregate trace class that enables: AFCREATE AFRTRV AFDESTROY AFMOVE AFLOCK AFTXN AFCOPY. Typically recommended to issue TRACE DISABLE AFLOCK unless the locking information is explicitly requested or needed

AFCREATE

Displays information about storing user data on sequential media volumes

Used to diagnose writing user data on sequential media volumes

AFRTRV

Displays information about reading user data from sequential media volumes

Used to diagnose reading user data from sequential media volumes

AFMOVE

Displays operations that move user data using sequential media volumes. Move operations are performed by MIGRATION, RECLAMATION, MOVE DATA, and MOVE NODEDATA server processes

Used to diagnose problems with the data movement server processes

AS

Displays information volume selection and assignment, coordination of drives (mount points), and management of data placement on volumes

Used to diagnose many different problems relating to volumes, mount points, or data read and write operations

This is an aggregate trace class that enables: ASALLOC ASRTRV ASDEALLOC ASMOUNT ASVOL ASTXN ASSD. Typically recommended to issue TRACE DISABLE ASTXN unless the locking information is explicitly requested or needed

ASALLOC

Displays information about reserving and allocating space on sequential media volumes for the purpose of storing data. This may be storing data on behalf of a client session or for server data movement operations such as MIGRATION, RECLAMATION, MOVE DATA, or MOVE NODEDATA

Used to diagnose problems where the server or storage agent report no space available but there should be space available in the storage hierarchy

ASRTRV

Displays information about reading data from sequential media volumes

Used to diagnose problems reading data such as RESTORE or RETRIEVE client by the client or MIGRATION, RECLAMATION, STORAGE POOL BACKUP, AUDIT VOLUME, GENERATE BACKUPSET, EXPORT, MOVE DATA, or MOVE NODEDATA by the server

ASDEALLOC

Displays information about releasing and deallocating space on sequential media volumes for the purpose of storing data. Typical deallocation operations on the server are EXPIRATION, MIGGRATION, RECLAMATION, MOVE DATA, MOVE NODEDATA, AUDIT VOLUME, DELETE VOLUME, and DELETE FILESPACE.

ASMOUNT

Displays information about drive (mount point) selection and assignment for sequential media devices

Used to diagnose situations where sessions or processes are waiting for mount points or cases where an operation fails because no mount point is available. Also useful in cases where a mount point is preempted

ASVOL

Displays information about volume selection and assignment for sequential media volumes

Used to diagnose situations where sessions or processes are waiting for volumes or cases where an operation fails because no volume is available. Also useful in cases where volume access is preempted

ASTXN

Displays information about transactions used to make database updates relating to information for sequential media volumes, storage pools, device classes, and other attributes

Used to diagnose hangs, database operations failures reported for sequential media operations, or general data storage problems

ASSD

Displays information about sequential stream data operations. These are operations that use sequential media device classes, volumes, or mount points but do not store data in the storage hierarchy. Server processes that perform sequential stream data operations are BACKUP DB, EXPORT/IMPORT, and GENERATE BACKUPSET

BF

Information about user data (files) stored in the storage hierarchy

Used to diagnose general data read or write problems for client operations and server processes

BFAGGR

Displays information about server aggregation of user data. The server will aggregate many smaller user files into a larger file in the storage hierarchy to optimize performance for data movement operations such as MIGRATION, MOVE DATA, and MOVE NODEDATA

Used to diagnose general data read or write problems for client operations and server processes or both

BFCREATE

Displays information about client operations that store data in the storage hierarchy. Typically, these are BACKUP, ARCHIVE, or SPACE MANAGE operations by the client

Used to diagnose failures or other problems while a client is storing data

BFRTRV

Displays information about client operations that read data from the storage hierarchy

Used to diagnose failures or other problems while a client is reading data

CRC

Displays information about generating and managing CRCs on the server or storage agent

Used to diagnose data corruption issues where CRC processing did not report data corruption

This is an aggregate trace class that enables: CRCDATA, CRCPROTO, and CRCVAL

CRCDATA

Displays information about generating and managing CRCs for data stored in storage pools with CRCDATA=YES set

Used to diagnose data corruption issues where CRC processing did not report data corruption

CRCPROTO

Displays information about generating and managing CRCs for data exchanged between the client and either the server or storage agent where this node is configured with VALIDATEPROTOCOL=ALL or VALIDATEPROTOCOL=DATAOnly on the server

Used to diagnose data corruption issues where CRC processing did not report data corruption

CRCVAL

Displays information about generating and comparing CRC values

Informational for displaying CRC values during processing

DBNETDB

Displays information about LAN-free operations and the negotiation and management of information between the server and storage agent

Used to diagnose problems with LAN-free data movement

Typically applies to server and storage agent prior to V5.2. After V5.2, this still displays information but has been superceded by the LANFREE trace class. Typically best to enable this trace class on both the server and storage agent concurrently

DF

Displays information about user data stored on DISK volumes

Used to diagnose problems reading or writing user files to DISK volumes

This is an aggregate trace class that enables: DFCREATE DFRTRV DFDESTROY DFMOVE DFLOCK DFTXN DFCOPY. Typically recommended to issue TRACE DISABLE DFLOCK unless the locking information is explicitly requested or needed

DFCREATE

Displays information about storing user data on DISK volumes

Used to diagnose writing user data on DISK volumes

DFRTRV

Displays information about reading user data from DISK volumes

Used to diagnose reading user data from DISK volumes

DFMOVE

Displays operations that move user data using DISK volumes. Move operations are performed by MIGRATION, MOVE DATA, and MOVE NODEDATA server processes

Used to diagnose problems with the data movement server processes

DS

Displays information volume selection, space reservation, assignment, and management of data placement on DISK volumes

Used to diagnose many different problems relating to DISK volume data read and write operations

This is an aggregate trace class that enables: DSALLOC DSRTRV DSDEALLOC DSVOL DSTXN. Typically recommended to issue TRACE DISABLE DSTXN unless the locking information is explicitly requested or needed

DSALLOC

Displays information about reserving and allocating space on DISK volumes for the purpose of storing data. This may be storing data on behalf of a client session or for server data movement operations such as MIGRATION, MOVE DATA, or MOVE NODEDATA

Used to diagnose problems where the server or storage agent report no space available but there should be space available in the storage hierarchy

DSRTRV

Displays information about reading data from DISK volumes

Used to diagnose problems reading data such as RESTORE or RETRIEVE client by the client or MIGRATION, STORAGE POOL BACKUP, AUDIT VOLUME, GENERATE BACKUPSET, EXPORT, MOVE DATA, or MOVE NODEDATA by the server

DSDEALLOC

Displays information about releasing and deallocating space on DISK volumes. Typical deallocation operations on the server are EXPIRATION, MIGRATION, MOVE DATA, MOVE NODEDATA, AUDIT VOLUME, DELETE VOLUME, and DELETE FILESPACE

Used to diagnose during the deletion of data

DSVOL

Displays information about volume selection and assignment for DISK volumes

Used to diagnose situations where sessions or processes are waiting for volumes or cases where an operation fails because no volume is available

DSTXN

Displays information about transactions used to make database updates relating to information for DISK volumes, storage pools, device classes, and other attributes

Used to diagnose hangs, database operations failures reported for DISK operations, or general data storage problems

LANFREE

Displays general information about LAN-free operations on either the server or storage agent. Also displays error information for LAN-free-related operations

Any LAN-free failure

Available only in V5.2 or later. Best if traced on both the server and storage agent concurrently

MMS

Displays information about tape libraries and the server or storage agent use of these

Used to diagnose problems with tape libraries, library volume inventories, or other general library issues

This is an aggregate trace class that enables: MMSBASE MMSTXN MMSLIB MMSDRIVE MMSOP MMSMAN MMSSCSI MMSFLAG MMSACSLS MMSSHARE. Usually best to include NA and PVR trace classes when tracing MMS.

NA

Displays information about path information for the server or storage agent. This relates to the DEFINE PATH, UPDATE PATH, DELETE PATH, and QUERY PATH commands

Used to diagnose problems with paths to devices

This is an aggregate trace class that enables: NALOCK NAPATH NAMOVER NADISK NACONFIG. Usually best to include MMS and PVR trace classes when tracing NA

PVR

Displays information about sequential media devices and the server or storage agent use of these devices

Used to diagnose problems with tape drives, failures reading or writing tape volumes, or other tape-volume-related issues

This is an aggregate trace class that enables: PVR8MMBASE PVR4MMBASE PVRQICBASE PVRDLTBASE PVRECARTBASE PVRDTFBASE PVRTAPIBASE PVRGTS PVRFILE PVRLAN PVRVOL PVRCLASS PVRMP PVRTAPE PVRODSK PVRNTP PVRSHARE PVRNAS PVRREMOTE. Usually best

to include MMS and NA trace classes when tracing PVR

SESSION

Displays information about sessions connected to the server

Useful in many cases. Generally recommended for protocol violations, transaction processing errors, or in cases where the client is hung and not responding

TCP

Collects information regarding TCP/IP used between the client and either server or storage agent

To debug session connection errors or data corruption issues that may e caused by the network

This is an aggregate trace class. It enables TCPINFO and TCPERROR

TCPDATA

Detailed TCP/IP trace used to display byte-level information about data that is sent or received

To debug session data corruption issues that may e caused by the network

TCPINFO

General TCP/IP trace used to display setup and characteristics of TCP/IP on the server or storage agent

To debug session data corruption issues that may e caused by the network