Backup_Context
    Nobackup_Context

    The Backup_Context qualifier specifies that the following
    symbols be initialized, unless you have issued a DCL SET
    SYMBOL/SCOPE=(NOLOCAL, NOGLOBAL) command:

    o  RDM$AIJ_SEQNO

       Contains the sequence number of the last .aij backup file
       written to tape. This symbol has a value identical to RDM$AIJ_
       BACKUP_SEQNO. RDM$AIJ_SEQNO was created prior to Oracle Rdb
       Version 6.0 and is maintained for compatibility with previous
       versions of Oracle Rdb.

    o  RDM$AIJ_CURRENT_SEQNO

       Contains the sequence number of the currently active .aij
       file. A value of -1 indicates that after-image journaling is
       disabled.

    o  RDM$AIJ_NEXT_SEQNO

       Contains the sequence number of the next .aij file that
       needs to be backed up. This symbol always contains a positive
       integer value (which may be 0).

    o  RDM$AIJ_LAST_SEQNO

       Contains the sequence number of the last .aij file available
       for a backup operation, which is different from the current
       sequence number if fixed-size journaling is being used. A
       value of -1 indicates that no journal has ever been backed up.

       If the value of the RDM$AIJ_NEXT_SEQNO symbol is greater than
       the value of the RDM$AIJ_LAST_SEQNO symbol, then no more .aij
       files are currently available for the backup operation.

    o  RDM$AIJ_BACKUP_SEQNO

       Contains the sequence number of the last .aij file backed
       up (completed) by the backup operation. This symbol is set
       at the completion of an .aij backup operation. A value of -
       1 indicates that this process has not yet backed up an .aij
       file.

    o  RDM$AIJ_COUNT

       Contains the number of available .aij files.

    o  RDM$AIJ_ENDOFFILE

       Contains the end of file block number for the current AIJ
       journal.

    o  RDM$AIJ_FULLNESS

       Contains the percent fullness of the current AIJ journal.

    o  RDM$HOT_STANDBY_STATE - Contains the current replication
       state. Possible state strings and the description of each
       state are listed below:

       -  "Inactive" - Inactive

       -  "DB_Bind" - Binding to database

       -  "Net_Bind" - Binding to network

       -  "Restart" - Replication restart activity

       -  "Connecting" - Waiting for LCS to connect

       -  "DB_Synch" - Database synchronization

       -  "Activating" - LSS server activation

       -  "SyncCmpltn" - LRS synchronization redo completion

       -  "Active" - Database replication

       -  "Completion" - Replication completion

       -  "Shutdown" - Replication cleanup

       -  "Net_Unbind" - Unbinding from network

       -  "Recovery" - Unbinding from database

       -  "Unknown" - Unknown state or unable to determine state

    o  RDM$HOT_STANDBY_SYNC_MODE - Contains the current replication
       synchronization mode when replication is active. Possible
       synchronization mode strings are listed below:

       o  "Cold"

       o  "Warm"

       o  "Hot"

       o  "Commit"

       o  "Unknown"

    The Nobackup_Context qualifier specifies that the preceding
    symbols will not be initialized.

    The Nobackup_Context qualifier is the default.

    Note that these are string symbols, not integer symbols, even
    though their equivalence values are numbers. Therefore performing
    arithmetic operations with them produces unexpected results.

    If you need to perform arithmetic operations with these symbols,
    first convert the string symbol values to numeric symbol values
    using the OpenVMS F$INTEGER lexical function. For example:

    $ SEQNO_RANGE = F$INTEGER(RDB$AIJ_LAST_SEQNO) -
    _$ - F$INTEGER(RDB$AIJ_NEXT_SEQNO)